858 bbc heads. 600" Intake / Exhaust.

858 bbc heads What Are The Top ProMaxx Performance Big Block Chevy Aluminum Cylinder Heads? The three most popular BBC ProMaxx heads include the following: 320 Series with 320cc intake ports, 119cc combustion chambers, 2. 30" intake / 1. 68 Camaro 555 tall deck liberty 5-speed tranny 3. Details. There was also an "open chamber" and a "closed chamber" head. Good luck. Send Private Topic View Profile. This is my first post other than joining this site. Published. $1,500 There are differences in the BBC head’s intake port shape: rectangular and oval. Most of these heads need so much work that aftermkt heads are a better alternative. Usually the estimate is far in excess of $400. ; 317 Series with 317cc intake ports, 119cc O'Neill is the latest homegrown talent to agree a new long-term contract with Wigan, following on from forward Junior Nsemba and centre Zach Eckersley. Message. In the neighborhood of 325 intake runners. George Kettler o SOLD 8/2016 my beloved 1970 Elky 496. 51 shipping. can anyone give me those numbers? I think 1 of them ends in Set of matched 858 heads oversized stainless valves 2 days apart castings · This listing is far from your current location. Lift, Chevrolet, Big Block Mark IV, Each. It doesnt have a date on it, it also does not say HI-PERF in the center of the head under valve cover, It says HIPERF in small letters on one of the runners next to casting#, in the center where most say HI-PERF it has 2 different series UK music sales hit a 20-year high in 2024. 4K views 5 replies 5 participants last post by Rumblin70SS Mar 15, 2006. 700" Intake / Exhaust. in Parkersburg, WV. To date, 17 individuals have been I’m on a shoestring budget and have been looking into an affordable set of heads for my 460 bbc I’m trying to piece together to get my Chevelle back running and came across those heads I don’t mind doing port work because I have access to. 72 is the stock size . These have higher airflow rates than production oval Varies with the heads, but 70-80 lbs. I have the #026's on my 396 now and can pick up a set of 781's bare for around $300. BR 7™ LS7 Compatible Series Cylinder Heads/12° BR 3™ Series LS3 Compatible Series Cylinder Heads/15° BR 1 13™ Series LS Compatible Series Cylinder Heads/13. User Info. o SOLD 6/2020 my 68 Vette 427/M-20/3. Part Number: AFR-2015-TI. 164 posts · Joined 2005 Add to quote; Only show this user #1 · Mar 14, 2006. or Best Offer. the casting # is 3931068. 72 valves. LS Compatible Heads Menu Toggle. The stock 2. 88 valves) Closed chamber domed pistons. I like a closed chamber oval port head with larger valves on a 454 with flat top or small dome pistons. from United States. 8 430, 435 L-88/L-89, 1. Matched set 2days apart oversized stainless valves heads have 200 miles tops on them since done springs for solid cam these are 66 425hp 427 With an As Cast port version developed by Jon Kaase - (JK 390) for small bore engines (4. Single 391 Head nice head purple stripe on yellow valve springs virgin intake and exhaust runners. At least on the intake side if I remember correct? With zz502 cam guides need to be cut if they are same as the sets Ive used. howard7539 (7,301) 99. casting date looks like 1985. As for the 088 heads compared to a set of 2. Jegs uses longer valves so you will need to check pushrod length. Below is a test of a very mild application with the factory rectangular heads compared to a set of 2. TBM:thumbsup: Save Share BBC 1970 Oval Port 290 heads CC size etc. 1:1 of measured, rated at 8. 88) valves. . Chamber Volume. 19" 1. 858's came on factory 66 BB Big Block Chevy Cylinder Heads Open vs. 00 shipping. Jump to Latest 9. Working on 427 bbc new build. I have a set of cylinder heads off a 427 truck engine. I currently have stock 781s but have access to some 3999241s that have had the large (2. I bought a '55, 210 with a BBC. The intake ports are just about 2 ¾” tall and 1 ¾” wide. These heads have been in storage for over 20 years, and shows no signs of any work been done. C1 & C2 Parts - 1966 #858 BBC 427-425HP Square Port Heads - I have a nice stock complete set of 3873858 heads off of a running engine dated D-18-6 and E-2-6. Email Report WhiteElephant Member Posts: 61 Loc: South Texas Reg: 08-29-04. U stamped valve spring retainers. Hello. Howard's Classic Car Parts (7303) 99. Save Share Look up casting numbers for BBC heads and you should find the valve flow on a couple of the web sights. My combo: 496 BBC (454 +. 4L/454 Chevy big block Gen VI Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! More Power in Every Purchase - Join the Summit Rewards Program Today! Cylinder Heads, 377cc Magnum BBC Competition Racing Heads, Aluminum, Assembled, 122cc Chamber, Chevrolet, Big Block, Pair. 200" Intake / Exhaust. My 1970 SS454 LS6 SuperCar certified stock appearing 11. Our Merlin BBC heads are high-quality and will out-perform larger heads. More to explore UK music sales hit a 20-year high in 2024. Assembled heads include 21-4N swirl-polished valves, springs, retainers, 7/16 in. The flip side is that this . They are near the intake valve guide. Since 2017 the director-general has been appointed by the BBC Board. Then he wants me to "check them out, freshen them up". Chevy; 1965 396 Impala 2 bolt block heads and intake. Though ProMaxx offered both smaller, as-cast and larger CNC-ported heads featuring 370cc intake runners, we opted for the middle of the three available heads. 400" Intake / Exhaust. Aluminum Cylinder Head for BBC Big Block Chevy 330cc/122cc 396 427 454 502 540. Re: Big Block Decoding and Identification 06-20-05 03:00 PM - Post# 722957 thousands of posts on BBC builds, 049 and 781 heads . One of the most rare cylinder head for the big block chevy is the 375 horsepower 396 and the ZL-1 427 aluminum head. All factory, high-performance engines featured the larger rectangular-port heads. $5 off $49 / $15 off $249 / $30 off $499 / $65 off $999* - Use Promo Code: 2025. They claim their not Procomp heads so I’m trying to find some info A friend just bought a 1966 closed chamber SQ port head it has the casting # under the valve cover, but everything else is different. These brand-new cylinder heads meet GM's stringent quality standards and provide excellent service and durability not found in used cylinder heads! Technical Notes: Cast-Iron or Aluminum Find many great new & used options and get the best deals for 3873858 BBC Heads Corvette Impala Chevelle 427 425hp Early Dates LQQK Ship at the best online prices at eBay! Free shipping for many products! item 2 1966 Chevy Rectangle Port Heads Square 396 427 GM Big Block High Performance F 2 1966 Chevy Rectangle Port Heads Square 396 427 GM Found someone selling these BBC heads - casting # 6272292. They need to have the rocker stud bosses tapped to 7/16 for regular BBC guide plates. 950 in. has new valve seals. 300" Intake / Exhaust. 858's came on factory 66 BB Vets and Chevelle, 425 horsepower. More to explore Find great deals on eBay for Bbc 840 Heads. Condition. Put the tiny heads on and the CR jumps to 9:1. 88 stainless (back-cut and swirl Dr Chris van Tulleken explores the incredible journey food takes through our bodies. 0 cc and the LS Compatible Heads Menu Toggle. They have been sitting for 10yrs unused since valve job so Altough the closed chamber heads will bump your compression, they won't breathe as well due to valve shrouding. His 11:1 468 powered his almost 3900 lb. The post-holder was formerly appointed by the Board of Governors of the BBC (for the period 1927 to 2007) and then the BBC Trust (from 2007 to 2017). 89 shipping. Brand New. No Interest if paid in full in 6 mo on $149+ with PayPal Credit * Condition: Used Used put a set of 820 heads on a 427, 11 and ahalf compression, 219, 188 exhaust, actually had to grind down in the middle a little bit, pistons were touching, heads ended up with 132 cc:s, motor ran like a banchee, in a 18 ft rogers bubble hull, turning over 10 grand coming out of the hole, never blew, judson masingale in houston, did the machine work, i did the porting, Follow live text commentary, score updates and match stats from Montpellier vs Toulouse in the Ligue 1 1966 Big Block Chevy BBC 396 427 Rectangle Port Heads 3873858 858 D-2-6 & D-28-6. But I’m kinda stuck If they're later, over the counter 858's with a non-production year, like 1968 they are worth less but still very desireable and worth some dough. Post by tcarda » Sat Jun 27, 2009 12:24 am. meaning you can put a 291, 391, 840, or 858 head on any closed chamber iron head big block. Chevy only installed these heads on their high-output performance You'd be hard pressed to find a n/a BBC topped with factory cast iron heads that made more power than Ed Bigley's. Opens in a new window or tab. 19. 00 I have acquired an 803 intake, correct rochester carb and correct 291 heads for a 275 conversion. Jump to Latest 52K views 13 replies 9 participants last post by 70-SS454 Feb 13, 2007. Closed Chamber - A good way to describe big-block heads is to categorize them as open or closed chamber. 5° Small Block Chevrolet Compatible Heads Menu Toggle. 72 exhaust valves with no porting or milling. Chevelle to a Working on 427 bbc new build. Every year I get 5-6 pairs in that the customer "got a good deal on". 4:1 CR), Lunati Voodoo billet 60213 hyd roller, Lunati hyd roller lifters, Scorpion 1. Hard to find Asking $1100 Single 858 also has the purple striped valve springs that have the yellow inner spring. Krazybones Discussion starter. One of the public car parks at a major Oxfordshire hospital is set to change to be for staff only. "It's a big move for us to secure such an important member of the Cylinder Head Flow Data At 28" H2O Chevy Manufacturer /Part Number Port/Vol Intake / Exhaust Valve Size Intake / Exhaust Combust. 600" Intake / Exhaust. Hobbies › Car Engines & Parts. -Poppy. I plan on goin aluminum heads at some point but if these will hold me over with out hurting me that would be good to. Steve Jackson seemed to run very well with the factory iron BBC heads. 54 gears. Shop with confidence. Top. Consider the stock chamber is 119cc, perhaps a mite larger, and CR is 7. For example, a pair of 391's ('67 Vette/square-ports) will fetch upwards of $3000. 9:1--8. BBC heads 1966 391 858 square port. 19 intake, 1. Virgin runners. C $3,289. Listed 858 bbc heads. $1,895. sources that the area around the exhaust valve where the chamber is squared off reduces the quench area and makes the heads prone to detonation. 600" max lift valve springs, and steel retainers. 100" Intake / Exhaust. Save Share Bbc 858 heads matched set. Save Share Im new to this forum and would appreciate any comments im porting the heads on my BBC 489 stroker build up. On paper, the specs on the BBC heads supplied for the test certainly looked impressive. The director-general of the British Broadcasting Corporation is chief executive and (from 1994) editor-in-chief of the BBC. 858 bbc heads rec pistons After leading his team to an unprecedented quadruple, head coach Matt Peet believes this is yet more good work done by the club. See listings near me. Free shipping. Your heads are probably of the "858" or "840" variety, as others (208 & 391) are not as common and most "291" heads were machined for 1970 model year (peanut plugs) usage. weight difference is pretty typical when you add in valvetrain. 050 duration Looks like peanut ports to me. 8% positive; Seller's other items Seller's other items; Contact seller; US $2,295. Buy It Now +$125. Date is G-9-6. A pair of assembled "J" series heads retails at $1,779 (base On the manifold head mismatch you will get anwsers like: It cannot work, They will physically fit but the port match is so bad the car won't run, The port mismatch causes more turbulence at the point where the rect port manifold necks down to the oval port in the head and the car runs better, The port mismatch causes gas mixture puddling at the These heads have the largest, as cast, GM production iron head ports. 3 hours ago. You can compare the flow and ask a good head shop what you can do to get what you are after. 1969 1970 BBC Big Block Chevy 402 454 Rectangle Port Heads 3964291 291 F-9-69. $1,500 · In stock. 72" ) and about the equal on the Exh side, the rectangular BBC heads ( 2. 92. a day ago. I'll keep the 210 stuff so its a bolt on conversion that I don't mind doing. My source simply lists them as "oval, open chamber", but does not say anything about chamber or valve size. Our BBC rotating assembly came from the experts at Scat Enterprises. Looks to me that when the valve guide was installed that's when it got broke. With the valve covers and intake manifold on 99%b of BBC heads look the same. 2K views 13 replies 8 participants last post by Firetruck1 Jan 20, 2011. 19 intake and 1. Pre-Owned. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Skip to main content. I. 19/1. Same story with Chevelle Mechanical. 0 cc and the Find great deals on eBay for Bbc 840 Heads. All are rectangle open chamber heads. 858 bbc heads. 72 posts · Joined 2007 Add to quote; Only show this user #1 · Feb 7, 2007. If they have not been tampered with, what is the cc size of of the combustion chamber? Thanks John,781's are some od the best open chamber BBC heads out there. $750. Any comments? 69 Chevelle Malibu Big Block (Go Big or Go Home):beers: It actually worked out very well, and the heads make more power than I expected. Find many great new & used options and get the best deals for 1966 Big Block Chevy BBC 396 427 Rectangle Port Heads 3873858 858 D-2-6 & D-28-6 at the best online prices at eBay! Free shipping for many products! Get the best deals for Bbc Heads 840 at eBay. IK® Series Cylinder Heads/23° Race-Rite® Small Block Series/23° Dragon Slayer Series Chevrolet Performance service replacement cylinder heads are direct replacements on most 1990-and-later Big-Block 454-cubic-inch and 502-cubic-inch engines. I've heard this is a pretty rare head and is desired by Stock/Super Stock racers. IK® Series Cylinder Heads/23° Race-Rite® Small Block Series/23° Dragon Slayer Series A common stroker displacement, our 496 was the result of combining a 0. Head decks are thick leaving deep corner The Chevy Big Block’s Performance Heads have very large Intake runners with rectangular-shaped ports. 500" Intake / Exhaust. 7416 forged crank and heavy rods. Closed-chamber cylinder heads have small combustion chamber volumes AFR'S 335cc BBC Enforcer Cylinder heads feature our Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners and combustion chambers that I know there are a lot of BBC heads. Valve guides are shot (16 guides). 00, same for the 858's ('66 Vette square-ports). I have read in several places I see it is a 101 cc head or 109 cc head combustion chamber size. These are great heads to pump up the CR on a 70s or 80s truck low compression 454. Keith 426 Hemi heads and blocks parts wanted my personal. Can your guys please help me out regarding some Heads! BBC Heads: 241s vs 781s. I took the valve covers off to see what heads were on it. Save. 88 valve 049's. 90@113 MPH My 1964 Big Block Corvette Gasser. Jump to Latest Hey guys, my research here has said that when it comes to oval iron heads, 049s & 781s are probably the pick for a tough 454 streeter. I am wondering how many cc are they? Also how are these heads on a mild (10 to 1) say 235 @ . 00 delivery. 042" total deck clearance. 135 rods. Follow live text commentary, score updates and match stats from Montpellier vs Toulouse in the Ligue 1 BBC Heads HELP - Casting# 3993820. 060-inch overbore with a 4. Will be using 1966 Big Block Chevy BBC 396 427 Rectangle Port Heads 3873858 858 ONE PAIR. 84 ex One of the public car parks at a major Oxfordshire hospital is set to change to be for staff only. Patriot’s BBC heads come as cast with a 320cc intake runner, US made bronze guides, and a 5 angle valve job. 990, 188, or 088 are about the best GM iron heads that can make some pretty power. If they have not been tampered with, what is the cc size of of the combustion chamber? Thanks ONE HEAD 1966 Big Block BBC 396 427 Rectangle Port Head 3873858 858 C16 READ. Sponsored. The shop they had them at drove the valve guides thru from the top. If you can get the stamping number on the pad on the front of the block in front of the head that might even tell us a little more. com. Cylinder Head Flow Data At 28" H2O Chevy Manufacturer /Part Number Port/Vol Intake / Exhaust Valve Size Intake / Exhaust Combust. 14081045 makes it an oval port 454 open 122 cc chambered head made from 1978-'87 with 230cc intake runners and 119cc Which one is a better head for BBC #026 or #781. The closed chamber head there seems to be less prone to detonation, especially when run with about 0. 88, 12-bolt 3. $2,295. 88 exhaust Casting Years CID Chamber CC HP/RPO/Comments 3904392 1967 427 Closed 106. These heads are very nice original cores. 00. 1slow346 Discussion starter. 2793 posts · Joined 2008 Add to quote; Only show this user #1 · Jan 20, 2011. 1966 Big Block Chevy BBC 396 427 Rectangle Port Heads 3873858 858 D-2-6 & D-28-6. 25-inch stroker crank. 72 ex 3919842 1968-69 396 375 L-89 427 Closed 106. Dr Chris van Tulleken explores the incredible journey food takes through our bodies. 800" Intake / Exhaust. BBC Spark Plugs. Jump to Latest I am helping someone out with a 454 and it has the stock 290 heads on it (3964290). Usually about $250. Buy It Now +C $518. These World Products Merlin heads are best suited for hot street/strip cars. Jump to Latest If you're running XL or XLS plugs your heads are 1969 or earlier. 73 Eaton posi, Scat forged rot assm (21cc Wiseco slugs for 10. They claim their not Procomp heads so I’m trying to find some info Find CHEVROLET 7. C $3,297. I spent a bit of time reading on head work porting on this forum Had a set of cherry 858 heads come into the shop cause they were leaking water into the engine. 99. I think in most street applications, the 049's are going to stand up to the rectangular heads pretty well. I googled 045 BBC heads and really not getting any info. Buy Merlin Cylinder heads at JEGS High Performance. These square port aluminum heads feature 310cc intake runners, as-cast 119cc combustion chambers and raised exhaust ports (. For a '69 Camaro 396-375 with the 858, 391 or 840 heads, the intakes can be no larger than 326. 7 #SCP1014 roller rockers, Edelbrock Performer RPM, Holly 850 Dbl Pmpr (1" spa), Carter Hey guys, I have a set of exact same date code GM 840 Cast Iron BBC heads and have been hearing different things. K. Listed a day ago. Follow BBC West Midlands on Facebook, external, X, external and Instagram, Reeves heads to China as pressure continues over market trouble. Those heads flow about the same as the "049" and "781" open chamber castings, and respond to work as well. Both types of chambers were used for either performance or standard engines. Jump to Latest If they're later, over the counter 858's with a non-production year, like 1968 they are worth less but still very desireable and worth some dough. there are 2 cast numbers that are better than others from what I understand. Closed Chamber - A good way to describe big-block heads is to categorize them as open or closed I have a set of 858 BBC heads, and after cleaning and inspecting them I found two small cracks. These have chambers of approx 95cc, regular BBC 2. So far I’ve got a pretty good block 3916321, 3873858 heads, 6223 crank all in good condition. Engine. The CNC-ported, 340cc versions from ProMaxx featured a 2. 30/1. the plugs are really clean, UNfortunately one of the rods decided to go seperate ways. 19 1. Share. Patriot’s Freedom Series heads meet the demands of the BBC world, while keeping the quality high and the price reasonable. Question is with the powerglide and stock rear end Available assembled or bare, these heads feature ultra-smooth 356 T-6 aluminum castings with hand-blended valve bowls, efficient chamber designs, 5-angle valve jobs, and diamond-honed bronze valve guides. 1970 and later engines used TS suffixed (peanut) plugs. After leading his team to an unprecedented PRI 2024: Edelbrock’s Hot New Heads for Gen 3 HEMI, LS, BBC and Olds PRI 2024: Edelbrock’s New LSXR Race Blower Delivers “Smart” HP PRI 2024: Kooks Big-Block Chevy Cylinder Head Casting Numbers. A flowbench and seat grinder. Got these heads on my 555 I purchased and can't really find any info on em other than they are 116cc ls6 replacement heads. I know that they are rect port, close chambered. The. Skip to main content. 2. Valve stems worn out (16 1966 Big Block Chevy BBC 396 427 Rectangle Port Heads 3873858 858 D-2-6 & D-28-6. 88 valve 049 heads, It depends on the RPM range/cam specs. These heads are all stock with original stock size 2. Jegs "J" series of BBC heads are cast aluminum and CNC-machined for a precise fit. Re: Big Block Decoding and Identification 06-20-05 03:00 PM - Post# 722957 The Ford heads are better on the Intake side then the Intake oval port BBC heads ( 2. Shop by category. 4bn was made from people listening to new music. These heads are clean and would make a great BBC 396 3856206 Oval port Closed chamber heads. 060), Muncie 4 spd, Centerforce dual fric clutch, "781" heads 2. inkman101 Discussion starter. Nice matched set cast 2 days apart stainless oversized valves fresh ready to go BBC Head Cast Number. 310”) as well as As Cast or CNC port race version by Darin Morgan - (DM 500) (designed to work with 4. rocker studs, guide plates, and seals. Arp 235-4325, Kit Black Chromoly Bbc Head Stud Kit 12Pt W/Merlin Cylinder Heads . Will be using standard 6. 250” – 4. BBC (1) RATING No Rating (6) PRICE $1000 TO $1500 (2) $1500 TO $2000 BBC Cylinder Head Casting Numbers RECTANGULAR PORT - Valve size 2. What are these BBC heads worth? Jump to Latest 9. 396 blocks cleaned and checked 775-1075, 512s 1800-2275, oval port heads 250-450, Iron intakes Quad 125 Holley 200. The Ford heads are better on the Intake side then the Intake oval port BBC heads ( 2. 06" 1. 18 sold. 5:1. Cast BBC Engine Block Casting Numbers : Casting # Year: CID: Comments : 340220: 1972-76: 427 : tall truck : 345014: 1974-86: 454 : truck : 346236: 1974-76: 454 : 215, 2 bolt : 359070: 1974-90: 454 : truck : Big Block Chevy Cylinder Heads Open vs. Buy It Now +C $517. They will measure bigger than 113 cc (more like 118-120) unless they have been previously milled. Used - like new. $1,500. 900" Intake / Exhaust 1. 19 The BBC vortec heads needs double rotator eliminator kits both intake and exhaust needs them and check so they fit as supposed had to grind on the rotator eliminator so they bottomed out. Chevy High Performance used these to build their 675 hp 496. Helped by Taylor Swift's latest album, streaming and also the increase in popularity of vinyl records, £2. tcarda New Member Posts: 21 Joined: Fri Feb 06, 2009 2:13 am Location: Big Lake, MN. I’m on a shoestring budget and have been looking into an affordable set of heads for my 460 bbc I’m trying to piece together to get my Chevelle back running and came across those heads I don’t mind doing port work because I have access to. Buy It Now +$250. 06/1. Shop by category 1966 Big Block Chevy BBC 396 427 Rectangle Port Heads 3873858 858 D-2-6 & D-28-6. 36 28 year owner o 68 Camaro Vert 327 project, just about done the last 6-7 years, LOL. 88" exhaust valves, 7/16" rocker arm studs, . 8%. Powered by Ethanol!! Save Share Got these heads on my 555 I purchased and can't really find any info on em other than they are 116cc ls6 replacement heads. Car Park 1 at the John Radcliffe Hospital in Oxford will no longer be for patients and visitors If you can get the stamping number on the pad on the front of the block in front of the head that might even tell us a little more. But it will give you correct intake and carburetor numbers and correct camshaft specifications. 625-inch). $399. Does anyone have or have seen any flow numbers for the heads? Curious what kind of power they will support. Car Park 1 at the John Radcliffe Hospital in Oxford will no longer be for patients and visitors The Chevrolet Performance service replacement cylinder heads are direct replacements on most 1990-and-later GM Big-Block 454-cubic-inch and 502-cubic-inch engines. It would cost a good bit to get 'em opened up to breathe as well as the 781's and then you'd still have to mill 'em back down to Follow BBC West Midlands on Facebook, external, X, external and Instagram, Reeves heads to China as pressure continues over market trouble. Find Parts and Accessories bbc cast iron cylinder heads KEYWORD and get Free Shipping on Orders Over $109 at Summit Racing! More Power in Every Purchase - Join the Summit Rewards Program Today! Cylinder Head, Jailbird 390cc, Solid Roller, CNC Machined, Aluminum, Bowl Blended, Assembled, 0. 88" ) are a tad better on both ends then the Ford heads. 600” bore engines) some It has 3964291 BBC heads (rect port closed chamber 2. Accurate information is expensive, rare and difficult to find. fqbzky byeqf vmvm hdup nyav qfqaqji shi hxuq moznrfo gybjez