406 vs 421 sbc sound. I added the Billet Splayed Main caps to mine.

406 vs 421 sbc sound Low hours. And I am frustrated with these, given the money My friend is building a 377 and I am building a 406 and here is some info on both My 406 Forged bottom end 10. The 1. Thread starter Lmus10; Start date Nov 14, 2016; L. It is a small base circle cam (. I installed it last winter, and put 8000 miles on it this spring/summer/fall. looking to make peak horsepower around 7000 - 7200 rpm. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Press Copyright Contact us Creators Advertise Developers Terms Privacy 72 nova, not sure of weight, figure a basic 72, sbc/th350 with an 8 point cage and you'll be close. Michael J PS. 77 Monte 421 Profilers ported by Eric Weingartner, Straub HR 3200 conv. We do not recommend running the vacuum advance with this engine. Very pleased with Straubs cams. Jump to Latest Good reading here, been looking into this also as I have built some 406 and 408s that did real well. cranecams. I have read just as many problems with SBC headers and BBC headers. 600 + lift specs. 36 Eaton Posi, 77 Monte 421 Profilers ported by Eric Weingartner, A 383 vs a 406 is like comparing a BBC 396" to a BBC 427" really no contest ! Steve 68 BISCAYNE 4060lb 468-9. and YES it is worth it to me. The 421, using the 400 based block (like Jim typically builds), is certainly worthwhile. 2800 to 3200 stall!! 1970 chevelle silent sleeper sbc powered jap trap eater Kik start - sounds like quite an engine. n2omike Guru Posts: 1067 Joined: Sun Sep 03, 2006 2:56 am Location: West Requirements: N/A SBC, CR around 11:1, max. I was looking into the Dart Iron Eagle Platinum series cylinder heads. 155”bore by 3. Jump to Latest twenty years ago I made 757 HP with a stock block 406-Tunnelram with two dominators. 73's Guys, how would a 180 head work on a 400 to 406 sbc? I have a set of Brodix 180 IK on a Another 406 SBC Jump to Latest 1. 29 sixty 6. 155x3. I'm just being a jerk That's all. 29 gears, for the 1/8 mile runs only We run a Naturally aspirated 421 SBC in my daughter's 69 Firebird . 410-415ci would be my choice unless you go Tall Deck. You could get 421 to 434 with a stock block (pushing the limits) and there are some good 23* iron heads available. 155” bore by 4” stroke). 50 trans, if it were a PG, i'd go 5. It does not have to have any 'street' manners, and won't have AC, power brakes, etc. 6 rockers competition cams xr280r 406. Could this header be choking the engine? An acquaintance of mine had a 14. 21 CH. 83 1/8 at the shootout last November in an 91 s10 currently building a 63 chevy II should be lighter with the same engine hoping for eights!!! I sounds cool I both options will have their backers, and both offer advantages, theres little question that a correctly built 406 can produce a bit more torque, or that the 377 can spin up about 400rpm higher in the rpm band,before piston LS technology is obviously far better than an sbc Sounds like you already answered your own question- go with sbc if you want the easier and possibly cheaper route. Save Share Reply Quote Like. 51@101. It has a good lope and sounds great IMO. Plus cam to rod clearance is Nuts with a 4. That was with bowl blended dart Sportsmans, 2 bolt studded block, GM 5. , and it spits out 950 HP carb, 1000 HP carb, 1050 Dominator. the smaller cranks puts less stress on mains and has a Im looking to get educated on the 4-7 swap camshafts. 07 comp, ported Trick Flow 195 heads, RPM Air gap, Holley 3310, 77 Monte 421 Profilers ported by Eric Weingartner, Straub HR 3200 conv. 1st time crankn my 421 up. Matched to 1205 gasket. 6, ~64cc chamber-Mahle flat top piston, 11. Sounds like he needs a lot of low end grunt. 06 S/S valves , 100 thou longer push rods , 5. With the Eagle Stroker Kit witrh the Stroker rods you can run a standard base circle cam also. lifters for ease of use and not needing to set lash all the time and 23 degree heads for standard part compatibility. 421 to 406 is gonna lose about 20lbs roughly using the same parts. I would stick with the standard port RHS 235cc only because it sounds like you are on a budget and I believe the Raised Runner head requires some special parts. Time will tell how they work out on a 406-421. 9 shots per min on 420 vs 2. I need some feedback on some of the blower pistons out there. With a nice set of Diamond Nitrous Domed pistons. This is the Lunati roller I have in my 406. 406. I have also thought of doing a 400 block with 350 crank for a 377. 7 comp, 246/250@50 Hydraulic roller, Super Victor match ported to heads & Chevy Engine Build Engine = 406ci, 4. Sure is nice to be able to turn the key and have 500+ hp available that you can hardly hear run. The only thing he is doing is getting a bigger cam and having the heads done to accomodate the larger lift cam. That is why I’m using two Holley 390 CFM V. I like your plans. Lmus10 Member. 1924 posts · Joined 2006 Add I’ve had Chris Straub from Straub technologies do 4 cams for me. 050 on the intake side and 260 on the exhaust side, . 10 gear 406 SBC with Flowmaster FlowFX Mufflers 406 or 420 sbc. -400 sbc, dart shp block, 4. 00. 600 lift, cut on 108 L/S. 6" valves. 125 bore-Quickfuel/proform mismatch 950HP carb-Edelbrock Super victor intake-Brodix track 1 heads, 2. 875 stroke) 95% street/strip combo, pump gas. 406 NATRALLY ASPIRATED goes, I went with the 383, I know im the minority here but for my application and budget it seemed like the best route to go. A brand-new, unused Firing up the the New engine . 050" duration would have you thinking, because the difference between the ,050" duration and advertised is so low. Still need valve, timing, and carb adjustments. I just dont know if I should go with a 200, a 215 or a 230cc sized head. I recently purchased AFR heads, 195 street port. Save Share They obviously have never driven a SBC 406 or a blown 540 BBC, or a NA 632 big block. 421 issue. 05, 1. 73 12 bolt SBC CHEVY 406 DART SHORT BLOCK FORGED -13. Brodix and Profiler heads are quality companies. 5mph and in the high 10's the rest of the night. Caribbean Camaro - sounds more along the If you were comparing a 396 vs a 406 I think I'd lean a little more toward the 406 but even then the 396 has the advantage of bigger heads with more airflow capacity. For a good deal from his sbc 350. 92@119. No other changes but gears (3. I'm looking to make a great street engine with a lot of torque and hopefully can rev up to 6300-6500 rpms or so. Finish line rpm would be geared appropriately to 7200+ RPM. 155 bore, 3. 600 valves 1-4 Barrell ProSystems Carb Peak HP= 756. Superglue is my friend I was just concerned because there weren't very many replies on this subject putting 200cc heads on a sbc 421ci with a professional built 200r4 trans, It will sound better though. Other than the rich exhaust n valve noise I think it sounds pretty good. 832 stroke 5. 85" length rods versus 6. whiteperformance1 (211503) 99. 434 with a standard style head might even make more power with 421ci's. I'm looking to build a high compression 406 cu in full race engine for nostalgia bracket racing. I have 4. If you don't have a 350 block now there is no advantage to the 383 over the 406. Any suggestions or even sound clips would be greatly appreciated Mike . Ironman Discussion starter. 900 dia. will draw 669 CFM. Have you tried shifting But I figured to do some blind testing between LDAC vs SBC codec off my Samsung S23 (dev LDAC optimized for 909kbps quality, LDAC on under BT settings and one device enabled in sony phone app) with NC switched off. Would like for sounds like it has potential, its basically a commonly used old school combo thats been used for decades. Hi guys, I'm going to begin building my 406 for my next project and I wanted to ask you guys if you know of some good combinations. But depending on head choice, you may never see any difference in power what so ever with more cubic inch. Anyway General Discussion - 383 or 406 sbc - a guy around my way has two blocks that have been through the necessary machining and reassembled what im asking is what would most of you racers go with the 383 is a fresh 30 over 350 block with a 400 cast crank external balanced with 400 rods forged flat top pistons and the 406 C3 Tech/Performance - 406, 415, 421 or a 434 Stroker - What do you guys think? I have a 511 4-bolt block being cleaned/mag'd & pressure checked. IMO the only reason to ever build a sbc using a 4 inch bore block is if you already have a 4 inch bore block. As i said before, i'm on a 406 sbc project. 4 to 1 compression Ported 200cc Brodix RaceRite heads (2. I was looking at running 5. The 421 seems to be very popular today using the SHP block and Callies Rotators are the same money whether its a 383 or 421 421 SBC. Build thread. 5" and . I'm looking to make a great street engine with a lot of torque and hopefully can When you start bolting small chamber heads on a 406 the compression ratio jumps up quick! Zero deck and flat top pistons are in the mid 11:1 range with 64 cc heads, about 10:1 with 76 cc heads. Ironman 421 SBC. I plan to go forged lower end and it will be going into a 77. autotransdesign. OMGwhen you stomp the throttle OMG x 10. 406 SBC M21 3. 875 inch stroke, (415-421 cid). I can upgrade down the road is short order. I just want to go faster. I added the Billet Splayed Main caps to mine. 509 two bolt 400 block, bored . We built a 421 sbc . Then spray away. 97 posts Page 1 of 7. 875" stroke so 421 cubes. Here what I assume so far: Dart SHP or similar block to start with, 400 mains (4. Also with my build 421 builds I do step up to . When I've been considering future options for my Dart (SHP) block, I'm looking at "rebuild-ability", like Eric mentioned. Have read all of the 406 combos I could find. Getting a bit more compression with the added displacement would be nice since the heads have 70 cc chambers. 415 vs 421. 904 lifter bores. 9 inch,lots of Duct tape. Is this in an apples-to-apples comparison, or are there perhaps (Add) My guys just faxed the dyno sheet over to me from a 421" SB similar to the one also mentioned above. Choosing the larger -VS a SBC 434 14:1 CR Dart Pro 1 215CC Heads 2. Afr 220 406-421 sbc is a tried and true street combo with hyd roller. Best 1/4 time was 13. Bowl blended and guides thinned down as well. so don't want to know there is an engine up there. 580 lift (proven to rev to 7000 before floating the valves with this setup and same Putting together a 421 SBC ( 4. 0 and older, where bandwidth was much more limited, would cause it to sound like ass. Intake will be the Victor JR for this set up (I'm 100% sure) there will be a 1" nitrous plate between the manifold ant the 950 Hp Holley carburetor. 04 for 24 months with PayPal Credit * Condition: New New. Nice that a smaller head can do almost the same. I originally intended them for my fairly stock 406 short block and pulled several head bolts threads, 😢. torque. I picked up 96 lb. I dynoed a 406 SBC bracket engine with typical 1 3/4 x 30-32 x 3 with a collector about 6 inches long. 155 good bore 511 sbc 400 block, 2 cranks. The BBC is taller and longer than a SBC, but the 1. So far with a . The second one is a 421 brodix race rite cnced heads, eagle crank rods, billet caps, team g intake ( done by wilson) SBC 421 or 427. com that made mid high 600's with hydraulic rollers. What platform are you looking for? 400-406-414-421, Budget or quality parts? Of your going to build a 406 go with the Pro block BBC cam tunnel, 4 bolt billet caps from front to rear all studded and . If you're not familiar with the 421 engine, do an internetsearch on SBC 421 vs 383 or 406, and you will be convinced of the difference. Save Share I would say 500 is on the low side for a fueling system with a fuel injected LS engine. 0 @ 7500 Peak TQ= 585. I don't know if i need or not a small base circle cam. www. I have no idea how much would cost for Hedman make a header with a wider port flange. 155 bore good street kit, the 421 is good to 6500 the 415 about 5500-6000 imo, a 5. Engine is a 421 SBC built with a Dart SHP block. Save Share 406 SBC, AFR 195's, Comp 242/248 @ 50 hyd rol, RPM Airgap, 10. 5% positive; Seller's other items Seller's other items; Contact seller; US $4,825. 73's Sounds odd, but that's how it played out. TCI TH350. It's a weekend TOY that will also spend time at the dragstrip. 1Gary. You should do some searching though I think novabro did a thread on a I built a 422 sbc using a stock block. Top. #dragcar #dragracing #draglife #chevelle #chevypower #chevy421 #sbc #chevysmallblock #hotrod 77 Monte 421 Profilers ported by Eric Weingartner, Light travels faster than sound. I built 2 406's over the years, one at 11. I know that the 377 will handle a few more revs than the 406, so it would work great in the '55 (it has 5. The 421 using the 4. You will want to check rod/cam clearance with those Scat rods. Just built a 406 with the SHP Pro block with the BBC cam tunnel and the Callies rotator did not need a reduced base circle cam. 900"). I took the oil filter off and the oil was golden brown but the filter was light gray inside and the oil seemed a little like gel in the bottom. 72 Nova- resurrecting it 2025 - converting to all old school sbc/TKX 99 Transam-LS 370 88mm turbo 71 Chevelle 496 bbc. 31 12 bolt Some folks like the *spin the heads at the cruise in* sound. 5cc DISH PISTONS SCAT CRANK & RODS . I tried a converted 650 double pumper with a 377 vs 406 vs 434. All on street radials with limited traction. 4:1 compression, 259/266 solid flat tappet cam, ported Bowtie heads, the other got it back in and fired it up sounds good went with a ptc 4500 loose stall comp cam Engine is a SBC 406 which we like to call "Min Rat". Mikej26 Member Posts: 103 Joined: Sat Jul 14, 2018 11:53 pm That's gonna follow the difference in cubes pretty directly. 7" Rods I have a 406 sbc short block that I am going to build. (shaft rockers) I could be wrong on that and if I am someone please let me know. I would like to keep it a pump gas motor and also use iron heads so I dont get hassled for having aluminum heads at certain places. We owe a favor to a good friend who wants us to build him a street 406" SBC, typical single 4-bbl, daily street driven. 64cc chamber. 125 bore) Forged stroker assembly, to bring it up maybe 421-427cid There was a few street pump gas motors posted around here or chevelles. Street Edge 10" 2800, 8. 800 or 3. Jump to Latest 21 - 40 of 83 Posts. com www. 1 @ 6300 its pretty bad when a little Dart 215CC 1-4 Barrell 434 14:1 can beat a 401SBC 2-4's SheetMetal Manifold 18deg 2. The cam is very similar to the one above but the LSA is 106, not 108. 00" to move the piston pin away from the oil ring package. 5 to 1 comp, 220cc heads, and a 250-ish duration hyd roller made 640. 030 over bore, decked for zero piston height Pistons are Wiseco #5535A3, +8cc volume (estimated compression 11:7-1 with 72cc heads) 6" Carellio forged H-beam rods Scat 4340 3. 875 stroke/6" Rod = 421:thumbup: an easier route is the 415 cid 3. Generally cams like the Thumper emulate the idle sound of the 1960’s and with 11 to 1 compression ratios the performance of that period of 100 plus octane fuel. Superglue is my friend Home of the famous "Bubba" burger. 76 60FT Drag Radials I’m looking to build a 414 421 sbc (3. Jump to Latest The Terminator really mellowed the idle out almost to the point that is sounds really tame making me want more 1967 SSRS. 10098 posts · Joined 2005 Add to quote; Only show this A 427 SBC will be in the same game as far as cost as the big block at this hp level. roller and maybe a 210 AFR head with a 75 CC chamber. BBC - Build it once and forget about it. A lot of good info above with one slight edit for clarity. I didn't believe the results and retested, with and 406 sbc,thumper cam. 155, and drill steam holes in the AFR heads. from Jake 200-4r w/ 3. 383 vs 406 Chevy. 040 over and a 3. The optimal air to fuel ratio is approx. 02 & 1. A modified street 406 will be 85% V. . 925 dia a small base circle, but in reality you'll need to be below . I dont think that would break the bank too bad. 0 with a 10" converter and 4. As far as the 383 vs. 030" bore (350 based block) tends to be more trouble than it is worth. I can toast the MT et streets at 30mph on the street anytime. PM was sent. My 422 is based on a factory 509 casting and is fitted with Oliver caps 1-4 and a deburred/smoothed rear cap, short filled, deck plugs, steam hole plugs, etc. Would like to run pump gas. Frankly the blown SBC is my cup mainly because I can't afford the blown BBC. and for that matter the specs of your cam based on how you want your engine to sound then you are a squirrel and should be posting on another board. 2's@103 with no traction. A few days ago I run a similar 406 on the dyno==Afr 210 heads, 236-242 hyd roller, with an RPM airgap manifold. I do not want to overbore more than . A 402 built by chevyhiperformance made 394 ftlbs at 2500 and 456ftlb at 3500. 1. :thumbup: Sbc 406 tunnel ram 1. Jump to Latest 258 views 1 reply 2 participants last post by gnx7 Oct 25, 2024. I’m interested in hearing your view and arguments of what heads to go for, Give me some input as i would like to know how much more torque that the 406 will have vs. . Plus how much torque with the transfer case take with out breaking??? I would look at a 421 with a hyd. At 6700 RPM @ 85% V. 400 GM sbc vs 400 Dart SHP block. 625 lift roller valvetrain. Can go. Super close race! ZR1 vs C1 Corvette . My own tests of SBC vs AAC over Bluetooth has shown me that SBC can most definitely achieve transparency. 13's in it!), but the Chevy II has the chassis dialed in to work better with a serious motor. See less See more ML67. We just bolted on a BLP 1230 Alky Dominator on my 23° Brodix Track One 233 421 s/b Chevrolet on top of a SV2 intake we put a 4500 top on. New Scat Forged Crank 421 SBC CR, Dynamic CR & Cam timing. 75" Crank 421 sbc with 210 heads would be a breeze to make 550 hp. ap72. 562/. HOW TO VIDEO LINKS:How to Gap Piston Rings - https://youtu. May need more spring pressure than 155, shim to 175-180 would work depending what lobe lift is available before bind I ran those pac spring afr195’s to 7000 in a 383 sbc. 7 comp, 830 DP, 4000 stall, Turbo 400, 3. Listed below are some of the most requested ones. General engine tech -- Drag don't always make the major changes we'd like them to. I'm sure abit more head, more rpm with more cam can get near 700. dynoed his cmobination (with same headers that would be used in the car(1 3/4 x 3), engine made 635 when done. $201. 5 posts · Joined 2016 Add to quote; Only show this user #1 · Oct 25, 2024. The 406 sbc kicked the 402 bbc in low rpm and mid range torque. He needs enough vacuum for Is there a difference in sound between lets say a high performance 11:1 compression 406 small block and a high performance 11:1 compression 468 big block? Got a sbc with a nasty cam and fenderwells and flowmaster 40's and 3. 1 2 of 5 Those Dart blocks sound like a pretty-good deal. It seems to have what i want. Now when you pop the hood. a good friend is having his Vortec motor rebuilt rebuilt right now and the machinist keeps trying to talk him into the 4-7 swap cam, promising about 40 more hp on a simple rebuild. Correct me if I'm wrong, but the reload advantage of 406 is not worth it. Moderator: Team. 406 units. Our pump-gas 383's average approximately 475 HP and our 400's come in around 575. A 406 will draw 787 CFM @ 6700 RPM @ 100% V. 875 Stroke. 904 roller lifters bigger body bigger wheel and axel is a win win. The 421 seems very popular now and the 220 AFR's would be the way to go. THE PLACE --- Willowbank Raceway, The Challenge --- Two Friends, two cars, two different engines. I have about $4500 invested in the 406 I ran. New. Whether you’re a seasoned gearhead or just starting your journey into engine building, this guide will provide you with essential tips, parts recommendations, and tuning advice to help you achieve your goal. Anyone here do a similar upgrade, or do similar engines with the different strokes and get meaningful benefits from the larger engine? I have 4,244 lb 1976 chevy caprice with a stock sbc 400 in it. 406/427/434 Stroker WISECO Forged Pistons Choosing Roller Rockers Distributors GM SBC and BBC Starter Mounting Heads Scat Crankshafts SBC 406 Doesnt Sound Right. The stock pump, oem is good up to 6500 rpm’s after that you need to step it up to a aftermarket pump or blueprinted pump, stopped the video after that because he sounds like a hillbilly back yard mechanic. Surprisingly it makes just under 500hp. Jump to Latest Sounds like you just want to get in and go with no worries go with the 383 ! you could always ad this gayness to ur sbc . 421sbc pump gas with ported Brodix Dragon Slayers ported super Vic 2 intake. Jump to Latest Camaro. 10:1 CR. Complete specs will not b given but enjoy the sound :) The valve train will be the limiting factor for RPM on production SBC engines. AFR 210 competition port heads untouched, 11. I have a buddy who offered me a set world product heads Sportsman 2 2. 406, less windage, get a good pan, mine has 227 AFR race ready, 10:xx compression, Bullet 255/259 @ . Think it would fit your needs. I want it to be quick but not radical, except for a good idle sound. This is an older thread, you may not receive a response, and could be reviving an old thread Listed below are the recommendations I have received so far regarding a cam for my 406 (1/4 mile drag racing) Details about the car/engine: Weight of car w/driver: 3335 Power glide with a 1. 400 SBC, 9:1, AFR 195s, TH400, Coan converter, 3. 6 rockers competition cams xr280r IMO a BBC fits just about as well as a SBC in these cars. I have a brand new 350 4 bolt block that was used for a few months in our ski boat , a set of Cast Iron Bow Tie heads with 2. I drive less than 2000 miles a year on her. 406 with 11. 50 . Hyd. I have done similar builds and experienced the same. Why not go with the 421! I say no to the stock 400 crank. 05 cam, It proves that 1 5/8 headers are more than adequate for most SBC street combos. 7" rods and DART heads". 4. 05@110 9. HOWEVER, let me introduce the combos I am considering: 383 cid - (350 Block) 4. E. S. Dart Sportsman II heads with 2. The hydraulic roller is in a zz3 350 with 195 AFR heads. He has a 750 VS carb, , dual plane aluminum intake, Brodix IK200 heads with 64CC's and 1 5/8 headers. Jeff, sounds like a solid combo and something Im expecting. 05 valves) Comp Cams XR300HR hydraulic roller cam specs: 300/306 advertised 248/254 @. I'm looking to make around 500 horsepower on pump gas, with a hydraulic roller camshaft. 0" stroke. T-flow 2nd choice sbc 406 no carb or accessories (4300$) motor is on engine stand never ran Fresh from machine shop! Fresh, all new forged internals, SB Chevy 406 motor, complete, intake to pan. About 7 or 8 years ago, I made 784 with a 421 Small Block Chevy with AFR 210 Heads & Ultradyne solid roller cam. I'm waiting for the specs on the cam but I know the heads are pretty aggressive but I think with a 406 they should work good. 08, 220cc 64 heads complete with a roller cam ect. 421 vs 434 sbc. I want to know which of these two, 406 or 421 stroker engines would be best for this car and why? The car will be a A 383 has a 400 crank as you know. 7 with traction. 421 sbc cam and combo help. The Goal ---- Too Win, Too be the Quickest, Too be the Fa I am aware of the 383 vs 406 Arguments . 85@121(bumping the rev limitor) Speierracing heads Jones Cam Design Do those bowtie 363 sound like they'd work good with that combo? Welcome to the site. That is why some people appear to be bright until you hear them speak. I am having ring seal problems with the stock block, but it may be caused by not Torque plate honing it when I have it bored. CR is 10:1 now 421 sbc cam and combo help. 50 ProCharger Carb Swap LS-1 LT-1 vs LS-1 Pushrod Length Harmonic Dampers Aluminum Water Pumps ARP Hardware CDI Ignition Choosing a Chevy Transmission 383 vs. Would build similar to a couple 383 builds that I have done. e85. 030" Bore X 3. 904 lifters because of the smaller base circle cams. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright 377 vs 434 SBC?? I had pretty much narrowed down my engine combination to a 434 small block (4. sound and so far RELIABLE. I have been getting ready to order parts, but the two most competent engine machinists I have found have both (independently) recommended that I would be better off with a 377 (4. 19 @142 and a 5. 230cc. 5:1 Ignition Timing = 35 Degrees Block = Factory 400 Crankshaft = Scat cast iron Rods = Scat 4340 I-Beam Pistons & Rings = Probe forged dished, Total seal 1/16-inch Oil Pan & Pump = Stock 4-quart & stock pump Camshaft = Lunati flat tappet hydraulic 230/230 @ 406 SBC - Cam suggestions. 406 sbc, 10. All make over 600hp on pump gas. Jump to Latest One talked about a 406, this one talking about a huge-budget 434, and one that just said "waz up". BTW, Solid roller cams tend to sound tamer than the . 406, 421 or 434 Sportsman Series Drag Race Short Block: $6995: Drag Race Engines Econo Series - SBC: 427/640HP Econo Series Drag Race Engine: SBC: 406 Roots Style Supercharged Engine - Stage I, II or III: From: $24450: 406 ProCharger Style Supercharged Engine - Stage I, II or III: From: $25450: Skip White built my 406It sits in a 63 Impala Longroof. Brian M 1980 Camaro,1966 BelAir,2004 Dodge Ram HEMI on 42" tires,72 Chevy Short Wide project What's the BEST SBC to build for bracket racing in 2019? Let's discuss what's going to be in the car at the drag races this year, plus some other updates fro sbc 408 the good vs the bad. 1st, 406 11:1 home ported stock valve size 062 Vortec heads Ported Super Victor, 1000 M/D Hyd flat tappet cam 1 5/8" headers Results, best of 10. Save Share Overview Building a high-performance 421 cubic inch small-block Chevrolet (SBC) engine that produces 700 horsepower is no small feat. Have 400 and 350 rods. 7 Eagle rods , Victor Junior & Victor 4x4 , 830 Holley. A 421 needs a stroker crank which costs money. Does that sound right to any of you? I currently have a 750 Mighty Demon on there. com I run a 421 sbc with 3. I need some help with our SBC engine build. 30. 85" of extra length is all in front of the engine mounts, since the mounts are in the same location relative to the back of the block. 2" 3. Heads are Dart pro 1. 000 base circle cam using a Callies rotator using the compstar rods. -My first option is to have the Chevy 400 block machined for 4-bolt splayed main caps, punch it out to 4. We run the Brodix 18X heads a custom grind Comp roller cam, Lunati crank and rods . 02" and 1. 7 or 6" rod 406 is all you need with a stock block, if your going to build for cubes, buy the dart block and build a 454 cid SBC now thats a stroker! 2wld4u You will have to run a small base circle cam with either one 421" or 434" and some cam companies call . Put in my parameters, 406, 7600 max RPM, heavily modified, etc, etc. Put together a 421 recently with cam specs almost identical with ported RHS 235 heads and had similar results. Jump to Latest Sounds like a great project. A lot If you were to build 2 motors, identical except that one was a 383, and the other was the 406, the 406 will make more power across the entire rpm range. 48” stroke). Mike . of TQ at 4500 rpm. They are already a 15 degree motor that can produce big tourqe. Winter has arrived in PAso now to resolve a few problems. 20 years ago, we did a basic 406 with a 249/259 106 LSA solid flat tappet than ran 7. 4:1 1. S. I have a 406 sbc with Scat crank and H beam rods. A. Nov 14, 2016 #1 Just joined the site. Be careful of the lure of large displacement small blocks. Wonder who has built one and if they'd do it again. The 406 there was under 9K. Callies Dragonslayer crank with their Ultra H-beam Rods. Here are 2 406 combos I have run in the las couple of years. 875 crank and 6 ing rods. All the 421's I have built I have used a solid roller and have gone to the . My 434" Bullit cam is . I’m looking for any advice on the combination of parts I should use. Not I'd stick with a 406 with those heads, if your plan is to turn over 7000rpm . I have a 6-71 jimmy im introducing to the old mule. th400. 15123 posts · Joined 2013 Add to quote; Only show this A friend of mine with 406 small block in a 65 Chevelle needs a cam recommendation from the "real pros" :beers: It's a weekend cruiser with appox. Jump to Latest 21 - 40 of 94 Posts. the 383( both motors built the same) I have heard that the 406 is a torque monster? True or false?The 383?? Thanks! Remember that the trans is a th350 and the gears are a 4:10. As far as a crank is concerned , I like an internal balanced crank set up for 6 inch rods. for total CFM of 780. It's 345Kbps max bitrate is more than enough to make it indistinguishable from a lossless source. I plan on using a Dart shp block. The Tunnel Ram I have on my 406 is the Edlebrock TR1X. But 13 to 1 is way too high for me for compression. I hear ya on wanting to go a different route as far as cube numbers but my little 406 dynoed 540 hp and 551 ftlbs torque with an 1-5/8 header. It’s been Cadillac V8, 225 should be sufficient for a 406 – 421 (depending if I stroke or not). 750 400 crankshaft. That 850 sounds like the one to use but if it means anything I'm using a 780 cfm 3310 on my 406SBC. 75:1 pistons, and Crane . So max you're shooting 4 more salvoes in a full game. From actual dyno runs: The 400 sbc that I mentioned above is make 477 ftlb at 2500 and 525 ftlb at 3500 rpms. I just need some recommendations on pistons that you guys may have used or like. 2 compression 406 with forged pistons and scat rods. ft. 5-1 406 sbc with a large roller (undisclosed to me), heads that flowed in the 315 range, and basically same setup more or less. As per Lingenfelters SBC book "why build a 383 when you can build a 406" (,030 over Kik start - sounds like quite an engine. I plan on running Dart heads 215's or 230's (haven't made up my mind yet. 4:1 compression, 259/266 solid flat tappet cam, ported Bowtie heads, the other got it back in and fired it up sounds good went with a ptc 4500 loose stall comp cam In the process of rebuilding my sbc400 to a 406. And flattop 377 / 406 pistons. Jump to Latest We run a 421 n/a on alcohol with 18 degree bowtie heads and intake not sure on how much hp it makes but it ran a best of 9. A 350 eagle steel, and a stock 3. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright SBC 421 cylinder head selection. Perfer pump General Q & A - 406 / 421 sbc builds - Anyone care to share their build experiences with a 400 small block chevy? I have several blocks available, thinking of building a GM block 406 or possibly a 421. I agree that it's implementation under Bluetooth 2. The 500 hp SBC will be a little hard to live with unless you are hard core hotrodder. I have run a 406 combination in my 79 Malibu for about 4 years now. 86 sounds good with a turbo 3. 13 or 5. be/blKm2ODrQZ4How to Measure Bearing Clea If heavy I would build as big a SBC as your budget allows. Jump to Latest The car sounds fine and runs strong but worried that's too low on start up. add anything to racing oil. I have been very happy with the reliability. Jump to Latest 77 Monte 421 Profilers ported by Eric and an 850 CFM vacuum secondary,that's a nice problem to have as either carb could be the best for the street. After takling buildsheet with the engine builder the 421 would have been near the same cost as what I wanted with a 383. I am listing everything that I currently have below and then listing what I still have to SBC 421 with AFR 220 and my semi custom hyd roller for AFR headed SBC with 65 Beaumont 406 sbc Tunnel Ram Faceplated TKO600 79 Camaro 427 SBC Tunnel Ra Faceplated C4 General Discussion - 377 build vs 406 sbc??? - Street build. SHARKBITEATTACK Discussion starter. santhuffshocks. Fuller roller cam setup with a . great street presence. 1 2 of 5 SBC 406 3240 pounds 1. Carb for 406 sbc. Those don’t look like stock sbc blocks, he’s also talking about oil aeration on a ls. It’s similar the 7110 Tunnel Ram. The numbers on the dials are uncorrected. 73's) and is consistant 13. -Todd-63 SS in intermediate stages of a Pro Street car. 421 VS. Turbo 400 with a 2400 stall converter and 3:55 gears. 625 15:1 CR Combo !! so you need to be careful comparing any 383 vs 406 or 406 vs 434 or I am building a 421 sbc with a short block from Ohio crank. (that is applied to a race engine). 420 lobe I can get away with a 1. Jump to Latest SBC 406 fully studded block (block is a 511). Light travels faster than sound. 155 x 3. I went this route becuase I have stock block and I wanted to spray 200-350 nitrous. First night the track was open here in Spokane Washington at the SCR strip! With a fresh list of upgrades the first pass running all motor was rather impress Hi to all , I am currently running a 406 in my car & am looking into getting some bits & pieces together for when it is time to do an engine reco. 200/1. Engine is 10. 6:1 compression AFR 210 Eliminator race ready head out of 383 vs. My combo: 423CID stroker 225cc Brodix Matt's 423 doesn't sound like "most" SBCs. I'm currently on the drawing board building a 421 SBC It will be used for strictly 1/4 mile (bracket) drag racing, 3100 lbs car, t-400, 6000 stall. (unknown) Reactions: 71350SS, LeoP, blue_69_malibu and 1 other person. (The two bolt main blocks are stronger than the four bolt blocks in the 400 motors). Engine Specifications However - I haven't seen a test / comparison on a 406; On the bigger engines like the 421 the Air Gap has to small of a CSA to support air flow at Higher RPM's . 421 is a good n/a and nitrous . 56 rear gear 28"x9" rear slick Shift point 6800, trap at 7000 Engine: 406 CI 13. heads. 750" Stroke - 5. Went to the Dynatech 1-3/4 to 1-7/8 stepped headers which fit perfect. C4 General Discussion - 377 build vs 406 sbc??? - Street build. 875 ). Maybe a typo on johnny's part. 2K views 9 replies 6 participants last post by 406 SBC Build. For Trade : a 1970 SBC 406 4bm, (Complete - Freshly rebuilt; New Forged Crank) for a BBC 454. Like said tho, cam libe choice and a good lifter is needed to work at higher rpm. 75 Power = 427 hp @ 5,100 Compression = 9. I wanted to use my exsisting headers ect. roller cam with 255 at . My interest is on the Hydraulic Roller Voodoo Retro-Fit Lunati 20120711K (60111). 7:1 ish-Callies crank and 6" rods Building and testing a 406 ci small block chevy vs a 402ci ls2 chevy small block - Chevy High Performance Magazine THis is a real generalization, but the weaker your heads, the more you will like the smaller centers ( 106-108) the better the heads, and the higher the compression, the more it will like the wider centers ( 112-114)everything else falls somewhere in the middle( 108-110) Once you get close with the cam centerlines, it wont make much differance if you change it up or down . 7000rpm, has to be Hydr. General engine tech -- Drag Racing to Circle Track. ( No electronics and on foot brake ) Great lil motor, make right at 700 hp. Price Trends. The LS block design sides are longer the a sbc. If you're building a motor to a power/rpm level that will require splayed caps on a factory block, just step up to an aftermarket block now. 3 solid rollers and the last one was a hydraulic roller. In the modern world of 91 maybe 93 at best compression ratios are too low to accommodate 1960’s cam design. 030", if at all possible . They were expecting much more. The engine compartments are huge. Why not the tried and true 406 in SBC or better yet a 408 in a LS. 125" stroke in a 4. , Funny you should bring this right now. 406 sbc guys? Jump to Latest 406 X2 what Al said. More motor 383 vs a 421 for almost the same cost win win. Then I bolted on an 18" collector extension. I'll know approximately 15 minutes after it's running if it makes more power than the BLP BX-4 434 sbc 421 sbc. Is there a difference in sound between lets say a high performance 11:1 compression 406 small block and a high performance 11:1 compression 468 big block? I'm still i would run the 406 for shorter stroke than the 421 that way you can get a better piston built that way you can put some boost in it . When you give the car gas the psi goes up to the 30 to 40 range. Then again, how light can you get the car? I had a 406 with 200cc iron sportsmans and an 800 Holley that easily pushed over 550 I had an old 406 SBC that was built back in the late 90's, Dart Little M, 4. 1 shots per min on 406 If you shoot nonstop all game from 0 second match start to the full 20 minutes, you shoot 38 times with 420 and 42 times with 406. 406 12:1 home ported Dart 215 Iron Eagle (non-platinum heads) 441 ci C4 ZR1 vs 406 SBC C1. Hey guys,,,,, lets see what your running (pic's?) Some of you might already know from a past post but I have been working on my 406 the last couple weeks, thinking of trying some different combo's out at the track, so LIST your combo of your 400 or 406 sbc here,, lets see what you got and how it runs, drives and sounds,, all by the way all out racing combos are just fine The 406 sbc with vortec heads makes BBC torque even in the low rpms. be/YaVu8FiUhLQHow to Check PTV Clearance - https://youtu. If you want to build something that probably will have the best longevity. 7 rod 4. I would be happy to get 580 to 600 hp out of it with room to move in the future. Those AFR 220's seems bad A$$. Joe probably has more experience with the 406" than anyone, but all thoughts welcome. 383 SBC. I have the Lunati Pro-Mod rods (I-beam) in mine. It would be a good time to replace the fuel lines if you haven't done so already, and a new fuel tank might not be a bad idea either. It begins to get very pricey after you go beyond a 3. 420 RWHP From what Eric said, it sounds like his machinist might be the right guy, but the OP is second-guessing the machinist, based on the 414 v. 125/1. C3 Tech/Performance - 406 SBC Problems to Resolve This Winter - As some of you know, I had a Dart SHP Block 406 SBC built for my 77. Was crusing Holleys site, and saw the carb selector wizard. It is very easy on the valvetrain. 2nd. LOL The Dynatechs is a good deal at 400 bucks at Jegs but I almost sure the flange openings are smaller than the head port exit. 80 first gear 4. I am mainly concerned about the 350 Block vs 400 Block strength and overheating issues . That is . Sbc vs bbc. With the 406 in the Chevy II, I was shifting at about 7400rpm, with the cast/hypereutectic 406 in the '55 right now, I shift at 6200. Next would be rod bolts, and possibly ring control- but who uses factory rod bolts, or rods and pistons/rings for that matter, in a engine destined Sbc 406 tunnel ram 1. It lasted about 10 or 12 runs on the dyno, then the STOCK crank broke. 875 in a dart little "M" blk. The solids are in a 434, 421, and 406. I’m not new to engines, done several rebuilds but it’s been original spec mostly and never a Chevy engine. I also re-ran the same test and settings with Tidal Hifi>Sound output XM5s and more audio settings with Exclusive output mode. The initial build was costly but the freshen ups we did were only a few thousand. He came with the assumption he'd need "a SCAT center balance crankshaft with 5. The original plan was to have my current sbc 355 built to a 383. 7 race prepped rods, Speed Pro 12. Great acceleration, torque and Thanks for your words. tsqgce vcmrdck ypn uuco qhxl inom yrwzhc zitzeji uss ktbvj