Buick 455 head specs Buick 455 V8 Stage 1 Starting Buick 455 Upgrades. It featured a displacement of 455 cubic inches, or 7. The Stage 2 SE heads out of the box have a near ideal intake to exhaust flow relationship. TA Stage 1 Opt. Mar 3, 2019 · Here’s where I’m confused - the 1241860 head, which is a ‘74 head has the stage 1 size valves in it - 2. in. I have no idea if there was possibly a service replacement head with a different 455 Stage I heads are the same as regular production heads with the addition of larger valves and firmer springs. Head Stud Kit (TA 1134X) TA Stage 2,3,4 Opt. Aug 13, 2023 · The Pontiac 455 was a big-block 455 cubic inch (7. Dec 28, 2023 · As Buick engineers struggled to meet emissions requirements, by 1975 the output dropped to only 205 hp, and 1976 proved to be the final year for the 455. 45 liter) V8 that had a cast iron block and heads. Ed Nov 8, 2012 · heads 53 pounds each cam 7 pounds Buick 400 = 600 pounds Buick 455 = 640 pounds sean Buick 76, Nov 8, 2012 #2. That’s where this story of this badass 1970 Buick GS Stage 2 begins. 050 in the hole . The Edelbrock Performer RPM Cylinder Head for 1965-76 Oldsmobile 400, 425 and 455 CID V8 engines is the perfect performance upgrade for big-block Olds-powered street machines and muscle cars. A Stage 1 engine featured special ported heads with larger valves and revised valve springs, a hotter camshaft, and a tweaked carburetor. Jan 7, 2004 · engine cylinder head bolts main bearing caps connecting rod bolts balancer bolt intake manifold exhaust manifold; 1954-1961 all: 65-75: 110-120: 40-45: 200-220: 25-30: 10-15 Jan 21, 2016 · I have a 455 that I am trying to identify what year and possible horsepower it may have, an also what vehicle it may have come from. 120" in diameter and the 1. I now own my first 1970 Buick GS 455. . The Edelbrock #60049 Performer RPM Super Stock cylinder head is designed for 400, 430 and 455 c. '12. Dec 1, 2023 · If you really want your Buick 455 upgrades to last, consider starting off with a new or machined short-block and internals. Factory Stage1 Registry GS Information Page. Mar 6, 2008 · 70 Iron heads are better due to 66-68cc chamber size & the bigger valves 2. 231 Duration @ . A head from a single four barrel 401 could be used and it would be the same. head casting numbers and descriptions. 005 maxi-mum specs allowed in the class. View complete technical specifications for 1970 Buick GSX 455 Stage I. You will also need to use TA 1136 head studs or TA 1131 head bolts. btw theres a huge difference in the potential power different cylinder head designs that will bolt to a 455 buick block, the stock block and heads are noted as being rather restrictive, compared to the aftermarket aluminum versions, but even the better buick heads can,t come close to the, ford 460,chevy bbc and chrysler hemi heads in potential Head bolts on the 263 as the head bolts are bottomed out and don't go into the water jacket. 125-4201: Buick V6 Stage ll Head Bolt Kit. It has an Edelbrock Aluminum intake, edelbrock carb( looks older), headers, 3in exhaust. Pontiac 455: Using their heads. E. So doing that to the heads worked but Fred said I could go with more porting on the heads. 1 to 11. 80/86 jetting in the Demon carb Mar 13, 2024 · In conclusion, the 1972 Buick 455 engine was a formidable V8 engine known for its power and reliability. 75" exhaust valves, 68cc combustion chambers and high flow 215cc intake and 130cc exhaust ports. 223-3703: Buick 455 hex: Head Stud Kit: 125-4001: Click : Buick 455 12pt: Head Stud Kit: 125-4201: Click : Buick V6 Stage ll: Head Bolt Kit: 223-3700: Click Feb 13, 2018 · Buick 400, 430, 455 Engine Specifications; Big Block Buick Casting Numbers; Buick 455 O. On 10:1 Compression engines, out of 455-63, 400/430-70: Fuel Pump Eccentric and Timing Chain Sprocket to Camshaft 22: Rocker Arm Cover to Cylinder Head 4: Rocker Arm Shaft to Cylinder Head 455-25, 400/430-30: Delcotron Bracket to Cylinder Head 35: Delcotron Adjusting Mounting Bracket to Cylinder Head 455-35, 400/430-22 Jul 13, 2024 · 1975 Buick 455 Engine Specs Engine Configuration. Maybe you should do the needed and the low hanging fruit on this one, then see how much more you want. 62 valves in them. The 320 and 248 on the intake side do, and that's where Chiltons got their info. Looks like poor machine work right out the box. Includes performance data, fuel economy, dimensions, engine details, and more. or remove the heads. Pontiac's 455 situation was a little more unusual. 755" in diameter. Jul 15, 2021 · The 455 was good fro as much as 360hp and 510 lb-ft of torque, with the highest output found in the Buick GS Stage 1. 35/10. 4- compression, flat tappet cam, with the factory quadrajet (choke plate still installed and no external modifications) that make over 600 HP. This engine was commonly found in various Buick models during the 1970s, including the Buick Electra, Riviera, and LeSabre. 125 and exhaust valves increased from 1. With 38 degrees of total lead and No. (4) Install modern Roller Hydraulic Cam from TA, a little more Cam than I have now. Apr 11, 2017 · Looking to buy a set (pair) of 455 heads with casting # 1231786, and a build date code of either A or B (January or February). Head Stud Kit (TA 1136X) Mar 25, 2003 · So you might have a Gran Sport that needed a head replaced. Good luck and never underestimate the small valve 455! Tom Feb 21, 2011 · I have a question about 455 cylinder heads, I understand that the Stage 1 heads flow more, but you guy's are always saying put stage 1 valves in standard 455 heads and they are the same!!! How can that be? The flow might be the same but the velocity will not be, unless its the vary same casting!!! • If using Head Bolts with TA aluminum heads, a special hardware upgrade kit is available which will include (4) each 3/8” studs, nuts and washers for position #’s 11,12,13,14. 455-63, 400/430-70: Fuel Pump Eccentric and Timing Chain Sprocket to Camshaft: 22: Rocker Arm Cover to Cylinder Head: 4: Rocker Arm Shaft to Cylinder Head: 455-25, 400/430-30: Delcotron Bracket to Cylinder Head: 35: Delcotron Adjusting Mounting Bracket to Cylinder Head: 455-35, 400/430-22: Delcotron Mounting Bracket Thru Delcotron to Cylinder 455 Head Comparison: Regular 455 head, Stage 1 and Stage2 heads. Would prefer completely assembled heads with lifters and valves, etc. Original 455 motor Motor was freshened by last owner. Head Bolt Kit (TA 1129X) Opt. Camshafts; Street Cam Selection Guide; 400/430/455 Poston Cams Grinds and Numbers; 400/430/455 Kenne-Bell Cams Grinds and Numbers; High 10's Secrets for Your Buick 455; Buick 455 Drag Strip Tests from Kenne-Bell; Head Flow Chart; Buick Staging Chart Jul 14, 2012 · Fred said the dimple just lost compression. No matter where the head came from, you'd still have an LX motor. Also I have a couple of nos 72 455 heads I bought from the Buick Farm several years ago, one of which is a Stage 1 (has hard seats, maybe factory installed ?). 060 over. TAPERFORMANCE. by George Nenadovich. d. The downside was the intake manifold. Note all specs were listed as nominal back then & they leveled the playing field with the other divisions as they all listed production ratios between 10. Headers or manifolds used on Standard, Stage 1 or TA’s Stage 1 aluminum heads will not work. 1970 Buick GSX 455 Stage The Buick GSX 455 Stage I is a rear wheel drive vehicle, with the powerplant positioned in the front, and a 2 door coupé body. The OE part numbers are: intake - 234604, exhaust - 234605, springs - 1383851 Aug 19, 2018 · Here on a SuperFlow 1020 the Stage 2 Street Eliminator heads going on an aluminum block build are flowing close to 400 cfm. Aug 30, 2009 · 455 HEADS / ALUMINUM vs PORTED IRON. Ported heads will obviously flow better than any non-ported heads. All flow numbers for CHW — Cylinder Head Works heads come from them Web Site updated April '10. Camshafts; Street Cam Selection Guide; 400/430/455 Poston Cams Grinds and Numbers; 400/430/455 Kenne-Bell Cams Grinds and Numbers; High 10's Secrets for Your Buick 455; Buick 455 Drag Strip Tests from Kenne-Bell; Head Flow Chart; Buick Staging Chart Mar 12, 2024 · The 1971 Buick 455 engine boasts an 8. Both heads have the same casting number. Cast #1231738 Serial# Head Bolt Kit Buick 455 Kit #: 125-3601 . From a performance aspect, the stage1 option consisted of larger valves in the heads (1970-up 455 engines only: intake valves increased from 2. lay the heart and soul of the 455 Stage 1 motor—the cylinder heads. 755” exhaust. • Note: The casting number for service replacement heads was 1240149. Converting stock 455 heads to Stage1 is a waste Jan 15, 2011 · I agree with Ron's posts above. com website's board is the best place to ask this. However, the outside bolts on the rocker arm shaft go through the head above the spark plugs, and today's oils are so slippery it will leak and fill the spark plug pocket. 15/1. Aftermarket parts and procedures may require different torque values. 72. The 1975 Buick 455 engine was a V8 engine that was part of Buick’s big-block engine family. • Stage 1 cam - Nov 21, 2013 · in fact if you look at HP ratings you'll find the A body GS 455 engine matches the base Riviera 455. The pushrods required with the Edelbrock heads weigh 30 grams more (EACH) than those with the TA heads. 050: Int. Thanks for your suggestions. Edelbrock Heads are limited to original Stage 1 valve sizes. Use of these heads does require Stage 2 style headers. Cylinder Head Bolts: Intake Manifold 1242694 SERVICE BASIC ENGINE FOR 1970-75 455 USAGE FEATURES ENLARGED SUCTION OIL HOLE AND DOUBLE SCALLOPS FOR THE COOLANT SEAL (SEE SERVICE BULLETIN 73-1-23) CAUTION: If the Basic Engines have the "double scallop" per illustration and the "oblong" holes, do not use the 1970-1972 Cylinder Head Gasket, 1237849. 125 intake, 1. Nov 1, 2023 · Felt Pro head gaskets. 5 cc chamber volume. 00 to 2. The 430 I used for a dummy engine a few years back when I built the 32 had red covers. Lift. Discussion in 'Street/strip 400/430/455' started by 455nglide, Aug 30, 2009. thanks Though Buick claimed the Stage 1 system was only good for 10 hp, quarter mile times for Stage 1 Buicks were nearly a half second better than the standard GS 455 cid. Heads are 70 Iron OLDS 455 heads that Duane did a great job on porting them as usual. I have them on my 76 block & they work great. Good port jobs, however, are EXPENSIVE. 43@101. Buick engines. Buick's first generation V8 was offered from 1953 through 1956; it replaced the Buick straight-eight. 400/430/455. Camshafts; Street Cam Selection Guide; 400/430/455 Poston Cams Grinds and Numbers; 400/430/455 Kenne-Bell Cams Grinds and Numbers; High 10's Secrets for Your Buick 455; Buick 455 Drag Strip Tests from Kenne-Bell; Head Flow Chart; Buick Staging Chart Nov 30, 2016 · I am rebuilding a '74 455 buick I own, and will run TA stage 1 heads with a PS1 or B4B intake (suggestions for street performance use) I realy don't know yet which one to use, block bored . This allows the regular 455 Iron Stage 1 heads to flow as well as stock Stage 2 Automotive Torque Specifications. Nov 26, 2023 · I have a set of fully rebuilt 73 heads with TA Performance TA-1430b back cut stainless valves, Viton seals on both intake and exhaust, Comp Cams 910-16 springs, and ready to bolt on. First off 455/ported head low compression Performance rebuild TRW pistons . I built my 455 with aluminum heads to run on 87 octane. The other head had the 2. (5) Current Comp cam specs: Comp Cam - specs in my 1970 Buick GS 455 Gross valve lift: Exh. Just about all the 455 Buick's that I've seen that were being peddled by a non-Buick guy were "Stage 1. I run in the 10's in the 1/4 mile at 3485lbs. 5cr. 9/1 CR heads. If you want to run the motor stock then the early motors are better but if your moding it then either is fine. The 67 430 heads have casting numbers 1382983, 1382985 and 1372963. Home: Buick: Buick Full Size 1970-88 455 cu. Use new Cylinder Head Gasket, 1241749. Updated July '10 — and were converted from 10" to 28". 72-74 455 Heads 5. Camshafts; Street Cam Selection Guide; 400/430/455 Poston Cams Grinds and Numbers; 400/430/455 Kenne-Bell Cams Grinds and Numbers; High 10's Secrets for Your Buick 455; Buick 455 Drag Strip Tests from Kenne-Bell; Head Flow Chart; Buick Staging Chart Apr 6, 2012 · GM listed the Stg1 455 cyl head @55. 75 exhaust. But I was using stock forged replacement pistons. If you want a little bit more performance and don't need a choke, you can block off the two center intake side passages in the heads for the heat crossover. Interiors were typical of Buick: upscale plush in your choice of vinyl bench, vinyl notchback or vinyl bucket seats with matching door panels in a variety of colors. May 24, 2023 · For most of you who have read my posts, know I'm new to the Buick 455 and new to the forum. Duration . 00/1. 223-3701: Buick Stage 1 12pt Head Bolt Kit. See All 33 Photos 1. Head Bolt Kit (use TA1136X) Opt. All flow numbers for CNC Heads UK come from their Web Site. The 75-76 455's had open port heads that are useless for performance. 69 430 Heads 4. In contrast to Oldsmobile and Buick, Pontiac took a different path with the 455, both for 1970 and beyond. The information listed above does not include porting. Motor is in a Regal I acquired. Standard valve sizes were 2" and 1 5/8". Keep in mind this is information has come from many different automotive resources, and may have some misprinted numbers as well as omissions. • The Stage 1 heads share casting numbers with the 455 heads, but contain larger valves. Engine Configuration The 455 Buick engine is a V8 engine that was produced by Buick from 1970 to 1976. The intake valve is 2. No machined numbers on the heads to differentiate. The large 68cc combustion chambers produce 9. This cylinder head includes adjustable rocker stud and guide plate set-up for use with small-block Chevy style adjustable 1. 1967-9. While officially called the "Fireball V8" [1] by Buick, it became known by enthusiasts as the "Nailhead" for the unusual vertical alignment of its small-sized valves (Originally it was known to hot-rodders as the "nail valve", because the engine's Feb 6, 2024 · Since the heads interchange, they have water ports front and back but only use the fronts for the intake. The Biggest power gains for your 400-430-455 engine are with TA’s aluminum cylinder heads, without question! We offer multiple cylinder heads to fit every performance combination. Did someone put those big valves in that late head or did they make that casting with two different size valves? Everything I have read says the 1241860 castings have 2. I was wondering what the specs are for the engine so i can get it rebuilt so that it is in stage 1 specs. Nov 12, 2009 · Buick 400, 430, 455 Engine Specifications; Big Block Buick Casting Numbers; Buick 455 O. With the right heads and camshaft, it's simple to transform even a later version of the motor into a 500hp build (with a girdle required to strengthen the block past the 600hp mark). 478” Duration @ . ALSO included in sale: TA-212 cam, Johnson lifters, TA Performance: dual groove cam bearings, timing set with gaskets, water pump, and thermostat housing with 185 Nov 13, 2018 · People talk a lot about the Grand National and the GNX, but to many Buick faithful, the 1970 Stage 1 455 is the apex of Buick performance. Buick V8 engines (Minimum 4. Buick 455 engines from 70-76 use pushrod oil (oil from the lifters) for lubricating the rocker arms. Oct 31, 2008 · Ditto for 1970 - 1972 for the new 455 engine, meaning, the Stage 1 heads for these years were the same production 455 heads opened up (unshrouded) for the larger valves. This allows the use of even larger valves such as 2. Here is side by side comparison of 1970 455 heads. I've been having a lot of discussions with my best friend who is also a gear head. Here are the specifications and intervals to keep in mind: – Engine Oil: The Buick 455 Stage 1 engine requires high-quality engine oil with a viscosity rating of 10W-30. 2:1 compression ratio with stock pistons. Jan 1, 2023 · Available throughout the Buick line, the GS's 455 engine debuted in '70. by George Nenadovich, Ron Rygelski and Gary Bohannon . 2. 400-430-455. Technically the 71/72 Riviera GS and Centurion 455 Heavy Duty was not reffered as Stage !, just Riviera GS, or Centurion HD. 62’s. Let’s delve into the engine oil specifications and service intervals for the Buick 455 engine. com 1. Today the Buick 455 V8 is an appealing choice for engine builders willing to work with its thinner walled design. 71 Buick GS455. Goal: 430-450 hp. The combo has a hyd roller cam and the NEWER Edelbrock OLDS Air Gap RPM intake. Camshafts; 400/430/455 Poston Cams Grinds and Numbers; 400/430/455 Kenne-Bell Cams Grinds and Numbers; Buick 455 Drag Strip Tests from Kenne-Bell; High 10's Secrets for Your Buick 455; Buick Staging Chart Feb 21, 2018 · Buick 400, 430, 455 Engine Specifications; Big Block Buick Casting Numbers; Buick 455 O. 00 US/pr. 050: Exh. I am going to have them flowed to see how that turns out. Head gaskets are 0. Sep 12, 2017 · Buick 400, 430, 455 Engine Specifications; Big Block Buick Casting Numbers; Buick 455 O. Will choose my carb depending on camshaft and intake. even though the 400 Buick is considered a “Big Block” engine, the factory bore and stroke put it close to the 4. Its specifications, including the displacement, cylinder configuration, compression ratio, fuel system, and ignition system, contributed to its impressive performance. As far as the carburetor/intake manifold: Lots of early 1970's Buick carbs were 800 CFM, and the Pontiac and Chevy dudes have been migrating them to Pontiacs and Chevvies for years. TA V1133A TA Street Intimidator (SI) and Street Eliminator (SE), (8 Bolt), 12 Point Nuts `86-`87 Buick Cylinder Blocks Designed for 400, 430 and 455ci Buick engines, these Performer RPM cylinder heads are available fully assembled and ready to bolt on or bare for use with your own valve train components. I'm using a TA212 cam also. Mar 13, 2024 · One essential aspect of maintenance is using the correct engine oil and following the recommended service intervals. 900 inches, respectively. The recommended engine oil for the 1973 Buick 455 engine is a high-quality, multi-viscosity oil with a viscosity of 10W-30. The cost is obviously more, but it’s really the only way to guarantee any sort of longevity. Honed, but not bored. Mar 26, 2001 · again, if they ever get the board working over there, the buickgsca. BTW, those are 72 455 heads. D. 100 ft. 050) Performer manifold 1" spacer 800 Q-jet TA 1 7/8 headers The 322 Fireball V8 in a 1956 Buick Century. Buick’s B-body and C-body full-size cars were being downsized for 1977, and there was no longer a need for a large-displacement V8. 6:1 ratio rockers. Available in Hydraulic Roller and Hydraulic Flat Tappet applications this aluminum cylinder head supersedes the previous 60515/60519 Olds Cylinder Head Instructions www. Notice how close the Stage 1 valves and they almost touch, you can barely fit a dime between them. Most flow numbers for DART heads were from DART or their Web Site updated Aug. Pontiac 455 V8 Big Block. Exhaust Manifold Bolts Fig. 1959-75 Buick engine torque value charts give you the correct bolt tightening requirements to prevent damage. 5 liters, hence its name. Stage1 valves were 2 1/8" and 1 3/4". Both of these heads are also #1238148 castings with dates sometime during 72 model year production. Sep 24, 2018 · The GS 455 and GS 455 Stage 1 were available only in two-door hardtop (Sport Coupe) and convertible guises. Buick 455 12pt Head Stud Kit. 5 liters) and was known for its impressive torque and smooth power delivery. May 19, 2019 · Not a distributor guy, so will leave specs to those that are; but more initial advance (up to a point) is generally a good thing. Intake: Performer Carb: Original 1971 800 cfm Qjet rebuilt, slightly modified Mar 6, 2018 · Buick 400, 430, 455 Engine Specifications; Big Block Buick Casting Numbers; Buick 455 O. DESCRIPTION: Edelbrock Performer RPM Buick Cylinder Heads are designed for street/strip high performance use on 1967-1981, 400-430-455 C. 25:1 and had a bore and stroke of 4. Features include high-quality stainless steel 2. 1510 in x 4. The 1974 Buick 455 engine was a powerful V8 engine that was part of Buick’s renowned big-block engine family. Mar 14, 2024 · In this article, we will delve into the specifications of the 455 Buick engine, its configuration, and the engine oil specs and service intervals. Sep 9, 2022 · When they made these heads, they tried some cross breeding between Chevy big block open chamber heads & buick 455 intake runners & exhaust ports. 625 to 1. I. Seems pretty fast. It featured a compression ratio of 10. Gran Sport Autobody also has a furnace for iron heads that heats the heads and the shop welds them while glowing red hot to reconfigure them. BTW, if you look at the advertised compression ratio for a stock 430 or 70 455, it can be misleading. 040” bore) and feature a performance range of 1500-6500 rpm for great throttle response throughout the power Buick 400, 430, 455 Engine Specifications; Big Block Buick Casting Numbers; Buick 455 O. One we recently worked on, a stock 455 short block with forged pistons. I need the cam, the heads, and size of the carb and anything else you want to throw out there that i will need to know when i get this rebuilt. Camshafts; Street Cam Selection Guide; 400/430/455 Poston Cams Grinds and Numbers; 400/430/455 Kenne-Bell Cams Grinds and Numbers; High 10's Secrets for Your Buick 455; Buick 455 Drag Strip Tests from Kenne-Bell; Head Flow Chart; Buick Staging Chart As with all TA heads, the valve spacing is improved on the TA Stage 1 Series. 3125 inches and 3. Casting numbers were the same for standard and stage1 heads. Buick 400, 430, 455 Engine Specifications; Big Block Buick Casting Numbers; Street Cam Selection Guide; Buick 455 O. and the only way to know for sure is to have documentation and. 5:1 compression ratio, which contributes to its impressive power output. They'll make a couple of good doorstops. 75-76 455 Heads. Kit Instructions (opens in a new Jul 15, 2021 · The Stage 1 managed to live on through 1974, and the 455 maintained Buick’s trademark for low-end torque through 1976. com 480-922-6807 Head Stud Kits Iron Production, Stage 1 & Stage 2 Blocks Part Nos. but would also consider bare heads with these castings. 75), stiffer valve springs (used a dual spring setup), rejetted carburetor, recurved distributor, special high-lift Oct 6, 2009 · As far as chamber size goes, there may be 3 to 4 cc's difference. 67-68 400-430 "Big Port" Heads (These heads flow about 5% better due to larger intake ports). BOLT TORQUE SPECIFICATIONS FOR BUICK 400, 430, 455 ENGINES Rocker Arm Shaft to Cylinder Head 455-25, 400/430-30 Delcotron Bracket to Cylinder Head 35 Feb 14, 2008 · Now, let's move to the ported head stuff. 1 Cylinder head bolt torque May 23, 2006 · The engine is a 455 out of a 1971 buick. 500) 9. It featured a displacement of 455 cubic inches (7. 260” intake and 1. Camshafts; Street Cam Selection Guide; 400/430/455 Poston Cams Grinds and Numbers; 400/430/455 Kenne-Bell Cams Grinds and Numbers; High 10's Secrets for Your Buick 455; Buick 455 Drag Strip Tests from Kenne-Bell; Head Flow Chart; Buick Staging Chart 455 - 13. 218 Lobe separation: 112 degrees Jan 9, 2023 · Buick 400, 430, 455 Engine Specifications; Big Block Buick Casting Numbers You are looking at about 3000. Nov 22, 2007 · You have to look at the valves. The rules specified a spec two-plane manifold, • The head casting number was 1231786. Common Stage1 Features - 1969-1974. Torque Specifications Based on 1970 specifications, other years and engine variations may be different. With 315 horsepower and a whopping 450 lb-ft of torque, this engine delivers exhilarating acceleration and a thrilling driving experience. Home » Cylinder Heads » V8 Cylinder Heads » 400-430-455 Aluminum Heads : Product ID: series heads are based off the Stage 2 iron head developed by Buick May 1, 2017 · The Buick block circles each cylinder bore with four head bolts that are tightened to 70 lb-ft. I would say that if you are rebuilding a 455 to meet factory specs than I would buy those heads if they were for When changing to Edelbrock heads this needs to be plugged because there is not complete coverage of this oil feed hole which is a left over design from 67-69 Buick 400-430 engines which used this hole for oil supply for rocker shaft oiling. Spark Plug 9. 4-1 compression 113 cam (228/247@. 125" intake and 1. If you can afford it, TA SE alum heads are the way to go. Cylinder Heads, Performer RPM, Edelbrock, Olds 400-455, Assembled. I am looking to sell my complete 70 Stage 1 iron heads. Therefore, the Stage 1 heads had the same casting numbers as regular 455 heads and were machined for the larger valves without any further identifying numbers. Jul 1, 2006 · 1976 Buick 455 Block Engine - Bulldozer Torque. 455nglide Working On A Dream. Willis (NTX5467) covered the exhaust. 496” Gross Valve lift: Int. Heads courtesy of Dennis Wheeler. Pistons: original 8. 400/430/455 heads were different. Specifications; Socket Size(s) 9/16 hex: Jobber Price*: $123. Heads have small combustion chambers, 68 cc, for the best compression Buick big block heads. The instrument cluster featured round gauges set into square pods. Nov 19, 2006 · With respect to the turbocharged Buick 3800s that were in the later Pontiac Firebirds, rather than the normal 3800 cylinder head, they used a narrowed Buick 3300 V-6 cylinder head. The 430 is a good motor and the heads/intake interchanges with the 455 so not much worry about either are fine. <P>to answer the last post-<BR>the chamber and valve size on big block heads are basically the same. Mar 4, 2006 · The later blocks are suppost to be stronger and the early heads are better for bumping up the compression. Let’s take a closer look at its configuration and May 7, 2009 · The regular production 455 heads are the same casting as Stage 1 heads but use smaller 2. Oct 16, 2009 · It has the 7. It was from my mom-in law's 68 Buick. You also haven't said what year the 455 is. One head milled more than the other? Here's the spreadsheet numbers. 70-71 455 Heads 3. Apr 3, 2023 · We have been working on several OLDS engine projects along with the BUICK engines we build. 71-74 heads are much better, and 70 heads are a bit better still. Let’s begin with the basic Buick 455 upgrades: Long-tube Headers Dec 30, 2003 · Test Results Based on prior experience with big-block Olds engines, we expected a torque monster, and we weren't disappointed. For additional information about the Buick 455ci V8 big block, click here: A History of the Buick 455 V8, GM's Overlooked Big Block V8. Values below are in foot/lbs. With a 4. elagache Platinum Level Contributor. Velocity and flow being the key. 223-3700: Buick Stage I Head Bolt Kit. Buicks-Long Known For Stump-Pulling Grunt-Are Still Alive And Well, Thanks To The Crew At Automotive Machine & Performance. 210 in bore and stroke, the engine is just barely undersquare, helping it produce gobs of low-end torque. " Mar 15, 2024 · To keep the Buick 455 Stage 1 engine running smoothly and to ensure its longevity, it is crucial to follow the recommended engine oil specifications and service intervals. Sep 11, 2023 · The following chart identifies the block, crankshaft, and cylinder head casting numbers for Buick’s made between 1962 and 1979. 625 valves; TA uses the '74-and-earlier castings and opens up the valve size, just as the factory did. 065/4. TA heads are cast from 356 aluminum and heat treated to T-6 specification. Although these iron castings carried the same Apr 29, 2017 · A fresh, Buick 455 in close to stock trim, well tuned, well carbed, etc will make a huge amount of barge pushing torque that's very satisfying to drive. . 05. the 1967 430 heads (and a few of the 68's) are preferred by racers wanting to use relatively stock parts, as they dont have the Mar 13, 2024 · 1974 Buick 455 Engine Specs Engine Configuration. i. Gessler ported Ta heads are the best choice if you have the $$$. I personally know of two 1972 Buick small valve 455 motors, 10. lbs. Dec 5, 2024 · In conclusion, the 1970 Buick 455 engine was a powerful V8 engine with a displacement of 455 cubic inches. As Bryce explained, “We thought the Buick had a good head, and we had the heads already. Any build date within these two months (A or B) will work. 030 over 430 heads with street/strip port, small valve (270/170@. 5:1 Cam: original - supposedly a Stage 1 regrind ? Heads: Standard valve 455 rebuilt, no headwork. • The block casting number was 1231738. 1cr & service packages listed @ 12. The reason was that the 3300 head was narrower as the 3800 head was too wide for that particular engine bay. E. Final torque specs are listed, some items require multiple torque steps. Head Swapping on the Buick 400/430/455 blocks "how to" There are 3 basic types of heads used on the Buick big block: type 1 - no core holes in center (1972), head matches early block; type 2 - single core hole in center, head matches early block; type 3 - double core holes in center and oblong holes in ends, head matches late block Jun 18, 2009 · In part two of our Epic Buick Dyno Thrash series we follow up our Buick 455 engine build by testing cylinder heads from Edelbrock and TA Performance as well as intake manifolds and camshafts - Car See full list on musclecarclub. These 67 heads are known as big port heads. Apr 29, 2021 · After 1976 the 455 left Buick's catalog forever. 040-inch-thick Victor Reinz composite units (PN 3899-1). phhcl ngdr mxx wxbprjo czabf rxvahyh stu lmsxe nls ahlh saezk uohcnrf femv wumddg ccuq