It was used in all production Pontiac V-8s from 1967 through 1979, except for the SD-455. Making 547 hp and 635 lb-ft of torque from a stroked Pontiac 400 - on The Pontiac harmonic balancer generally bolted together through 1967, and this two-piece unit was introduced in 1964. Going another route with the drivetrain so it will be pulled soon. There would still be latent chamber cooling from gasoline, but the propane would provide superior vaporization. The 00 found on this block indicates that its a 400. Depending upon the application, Pontiac sometimes ground off several or all of these numbers and stamped others into place. How to Improve Pontiac V-8 Performance: Engine Block Guide PONTIAC Crate Engines - Summit Racing 4.250" Stroke (Assembled), Butler Performance Custom Short Block, 400 Block, 471-478 cu. Depending upon the model year and application, a small variety of oil filter adapters were used throughout the course of V-8 production. $100.00 O.B.O. call 509 four five seven fifty five 55 phone died call 509 nine four nine 8586 Pontiac 400 Short Block - $350 (Beulah, WY), 1972 Pontiac 400 short block - $600 (Roaring Branch), Pontiac 400 Short Block - $250 (Beulah, WY), Pontiac 400 Short Block - $475 (Bossier City), Pontiac 400 Short Block - $700 (Altadena), Pontiac 400 long block & parts - $800 (Lusby). The most popular aluminum aftermarket Pontiac cylinder head flows about the same as a 20-year-old cast-iron Chevy small-block Bow Tie cylinder-head. 1967 "YB" code block, casting number 9786133. The engine has an after market Edelbrock intake manifold with an Edelbrock carburetor and air cleaner. 6X heads. This block is for YOU! How to Build a Pontiac Engine - Poncho Power - MotorTrend 09-15-2017 #2 67GTO4SPD Registered User Join Date Mar 2013 Posts 67 '68 RAIII heads a nice choice, if you are staying with factory iron heads. Pontiac motors have all one family (excepting 301s and 267s with their shorter deck height) so there is no big/small block distinction. $CHOPPY IDLE. Slap on a pair of these modern cylinder heads, choose a cam that matches their flow characteristics, improve the Chevy's bottom-end with long rods and lightweight pistons, and it's no contest (believe me, I like Pontiacs-if only someone would come out with a "clean sheet of paper" cylinder-head design, then Pontiac might have its revenge). Pontiac 400 Engine short Block Read Ad for Details - Shoppok 400ci Pontiac Street Short Block - Awesome Engines Original 400 and 455 blocks are the most popular for modern performance builds up to 600 hp or slightly more. First, you're confusing static compression with cranking-compression gauge readings. I recommend freshening it up as it has sat for a long time 1974 Pontiac 400 short block with 4.12" standard bore and two bolt mains. The blocks casting date is generally located on the distributor pad, and L186 found on this unit translates to December 18, 1966(L = Dec, 18 = 18th day, 6 = last digit of 1966). Most Pontiac engines were assembled with cast-aluminum pistons similar to this. As applied to propane/nitrous, there is a point where the danger from excessive heat outweighs propane's quick burn rate, high octane qualities, and good vaporization characteristics. Naturally you'll have to gasket-match the intakes and extensively port the bowls and short-turn-radius areas on both the intake and exhaust runners to improve flow and match the new, larger valves. Its wrist pin is offset slightly toward the thrust side of the piston, which is intended to lessen thrust load on the cylinder wall and provide quiet operation. Block casting number is 481988. DCI Pontiac 400 Stroked to 455 Crate Engine - DCI Motorsports 19 results for pontiac 400 short block Save this search Shipping to: 23917 Shop on eBay Brand New $20.00 or Best Offer Sponsored Find parts that fit We need more information about your vehicle to confirm fit. The original application depends upon the type used to assemble a particular Pontiac. Then return the heads to get the final valve-job done. Pontiac 400 Short Block - $350 (Beulah, WY) - Shoppok The crankshafts were constructed of cast-nodular iron in later years. Pontiac V8 engine - Wikipedia The engine mounts may be different for certain years, but most engine builders and restoration parts suppliers offer specific adapter kits for such situations. The inertial force placed upon it during normal operation requires that it be constructed of a sturdy material thats elastic enough to not fatigue during normal operation. Our Street Sleeper Series Injuns and Short Blocks are designed to HIDE THE HP using FACTORY CAST IRON HEADS and feature select factory 400 block cores, (with no core charges) fully deburred and Sign up for our newsletter to receive specials and up to date product news and releases. You probably have the Performer Centerbolt heads, PN 60859. Factory Crankshaft, magnafluxed, turned, 461 to 523 Cubic Inch Short Blocks Starting at only $7200! Heres Everything You Need to Know. Here are just some of the MR-1 and MR-1 aftermarket Pontiac Block improvements over a stock block: made from high quality cast iron thicker decks comes standard with steel 4 bolt splayed main caps no water jacket penetration at the clutch ball block is capable of large bore and stroke sizes Short Blocks (Assembled) - Butler Performance Its highly recommended that a conventional harmonic balancer be used during any rebuild. Our Factory Stock Series Injuns and Short Blocks feature select factory block cores, (with no core charges) fully deburred and machined with deck plates. New units were available through GM parts departments until just a few years ago, so NOS units are still available. Pontiac Complete Engines for 400 Do these parts fit your vehicle? (1) In Stock, Including at a Supplier. Because your particular heads must be reworked to accept bigger valves, I recommend two separate trips to the valve-job shop: First, the shop needs to rough-in the seats for the larger valves. The transmissions won't bolt up to what?? The oil pan is on the same plane as the crankshaft, and it contains a large sump at the rear. Though a low-grade steel forging, Pontiacs 1955 connecting rod is completely adequate for its intended application of stock street performance, but the lack of heat-treating limits its strength for high-performance applications. 400 pontiac and 400 chevy?are they the same? | Hot Rod Forum The pin was pressed into a fixed position beginning in 1958. If theres even a remote chance of a questionable past, consider upgrading to a modern forging. Butler Performance 557 Casting Budget Short Block Kit, 400 Block, 433-440 ci, 4.000" Str (Unassembled) (0) Reviews: Write first review. 6X heads. in. During a Royal Automobile Club dinner, where he was a guest of honour, the 90-year-old voice of Formula 1 was overwhelmed by a surprise unveiling of a group of classic racers that had been assembled by the Club on his behalf. Just tell them to do the valve job as specified in H-O's manual, not a typical generic Chevy job. By the way, in the 455 Pontiac dream engine story ("Pump-Gas Poncho," Jan. '05), one thing not mentioned was that a 455 crank turned down will not just drop right in a 400 block. This provides outstanding cylinder wall rigidity. I talked to several experts in the field, including Mike Wood of Nitrous Express; Mike Thermos of Nitrous Supply; Darrin Stettner, crewchief on Glen Sali's Pro Mod '91 IROC Camaro that ran 7-second, 198-mph e.t. The heads are 4X with a date code of A 9 3. Second, "PN 6085" doesn't exist in Edelbrock's head-numbering system. The inertia ring is pressed onto the stamped steel housing, which then gets bolted to the crankshaft hub. As for porting tools, a powerful, high-speed grinder is a must. This includes all five Ram Air engines, Super Duty engines, and HO Pontiac engines too. If you have quality digital photos of the car or problem, and if they're at least 300 dpi at 4x4 inches or larger in size (bigger is always better), send those in too.-Marlan Davis, I have a set of '69 Pontiac 400 heads, casting No. If an engine is operated within its intended limit, a properly designed cast connecting rod should provide a long service life in a given application, which makes it ideal for typical production engines. These exceptions received a traditional balancer to ensure operational longevity. Use the carbide burrs for major material removal; the stones and rolls are suitable for final cleanup and polishing. I've made 1000 hp with a stock 400 block and a stock crank, 3.750 stroke, . Gift . The adjustable conversion option may be the best choice because you'll almost certainly want to run a big cam with the ported heads. The traditional Pontiac V-8 engine's short block has some unique characteristics. 455 Short Block - Len Williams Auto Machine Early Pontiac units bolted together and were somewhat complex. a small-diameter, deep-groove pulley for my Chevrolet alternator? Our Factory Stock Series Injuns and Short Blocks feature select factory block cores, (with no core charges) fully deburred and machined with deck plates. Pontiac Engines, Early (1955 to 1979) Pontiac V-8 engine parts and engine building. The M20 wide ratio, the M21 close ratio, both of which had helical gears, and the M22 close ratio with straight cut gears, asa "The Rock Crusher". Making 1HP/cu in is hard not to do with them in stock form, even with a mild, but well setup combo. The factory used different-length valves to correct geometry problems. Text me or call me and leave a message with what you have along with your phone # and i'll call you back. With the new seats established, take the heads back home to port them, enlarging the bowl diameter to the new seats and performing the other port mods per the H-O manual. Saturday 9am - 1pm, Speed Pro Press Fit Forged Hi-Performance Pistons and Moly Rings File Fit to Specifications, Hi-Performance Balanced H-Beam 4340 Steel Connecting Rods with 7/16 12 Point Rod Bolts, 4340 Internally Balanced Crank Shaft, 4340 H Beam 7/16 ARP8740 Bolt Severe Duty Connecting Rods, Forged Mahle Pistons and Rings, Balance and Blue Print Rotator to .5 ozin, Hydraulic Flat Tappet Cam Shaft Kit; Competition Cams or Erson Cam, Lifters, Double Roller Timing Set, Cam Plate Installed, Hydraulic or Solid Roller Cam Kit; Competition Cams or Erson Pro Street Cam, Roller Lifters, Billet 9 Key Way Timing Set and Hardware Installed, Lucas 20w50 Break in Required Oil Case of Six Quarts and Napa Black Gold Oil Filter, Cometic MLS Tri-Layer Severe Duty Head Gaskets up to .051, Oil Filter Housing and Fasteners Kit, Oil Pump Primed and Pressure Recorded, SFI PowerBond Internal Harmonic Dampener Honed to Fit Crank if Needed and TDC Verified, Flat Tappet or Roller Cam Shaft Kit Chosen, 16-Hydraulic Flat Tappet or Roller Lifters, Brand New Aluminum Timing Cover Kit Installed, M54DS Oil Pump Kit and Proper Pick Up Tube, Moroso 7 Quart Correct Oil Pan Kit Installed. Ships to business address. We've been playing with Pontiacs for 48 years so put our experience to work for you. Note however that on a street car running pump gas, around 9.0:1 with 6-8 psi of boost usually is the best compromise in terms of overall driveability. Copyright 2023 Butler Performance Inc.. All Rights Reserved. The first production cast crankshafts, which appeared in the late 1950s, were constructed of a material referred to in Pontiac literature as ArmaSteel. The heat-treated steel forgings used in specific high-performance applications during the late 1950s and early 1960s are some of the strongest crankshafts Pontiac ever produced and fit later blocks, but are quite rare. A Molnar 4.250-inch steel crank brings displacement out to 468 cubic inches. Short block contains block, pistons, connecting rods, timing chain, cam, sprockets, lifters, torsional damper, and timing chain cover. The exhaust manifolds are different. Looking at your No. A 351/48-inch-od deep-groove pulley is still available from your GM dealer under PN 3829387. What we get this time is the F-Type on the road, and a shot of the F-Types interior too which looks very modern Jaguar. All else remaining the same, you'd have to open up the Edelbrock chambers about 8 cc (from 60 to 68 cc) to get down to the 9.0:1 range. It has fair manifold vacuum which handles most vacuum operated accessories. A bulletin was issued stating that a valid VIN was required when placing any order and only four were supplied if the claim was accepted. If you're planning to rebuild an engine you've already got, or you're considering a Pontiac V-8 purchase in the near future, there are some important engine block, crankshaft, and connecting rod information you should be aware of. Item #: ALL-APSJB-BIG-STD pontiac 400 engine block for sale | eBay The main bearing caps are fastened to the block by two large bolts in most cases and by four bolts in certain high- performance applications. With a separate Pontiac 400 engine and a Chevy 350 engine that will go with it. There ain't no replacement for displacement-except forced induction! The cost of that process along with the cost of adding modern fasteners and having them correctly sized can make them an unreasonable choice. Click here to email us with questions about this product. 400 turbo automatic transmission. Usually no lubricant is required with iron, but aluminum-head porting applications demand a special lubricant that prevents particles from clogging up the carbides and stones. Extremely fast-burning, propane's efficient, complete burn keeps CO and unburned hydrocarbon emissions down at the expense (because of its very efficiency) of somewhat higher NOx pollutants. Pontiac engine blocks - Tin Indian Performance If a used balancer in good condition isnt readily available, there are several companies that can rebuild them for you. The stock Pontiac crankshaft is a durable and well-balanced unit. Going another route with the drivetrain so it will be pulled soon. Newark Electronics is one source for such sophisticated units, or you might try a good welding supplies dealer. Is A Pontiac 400 A Big Block Engine? What's The Difference Between Big I was told from the gentlemen I purchased this from a few years ago that it came out of a 1968 Pontiac GTO. As for system layout, you can inject propane and nitrous with a plate under the propane carb (or fuel mixer). Short block contains block, pistons, connecting rods, timing chain, cam, sprockets, lifters, torsional damper, and timing chain cover. These are quite rare today. Short block contains block, pistons, connecting rods, timing chain, cam, sprockets, lifters, torsional damper, and timing chain cover. 400 Block; 428 Block ; They were induction, cylinder head, and camshaft-limited. Origin of the 400 The Pontiac Motor Division built the 400 from 1967 through 1978. If the problem persists, you may need to fabricate a belt guide. H-O's booklet also contains a bunch of other useful Pontiac info. The other combination I am considering is the GMPP 383 with my current heads, naturally aspirated with port-injection. Yet running just 6.5-psi of boost on the same 350 is worth about 115 lb-ft. Let's start at the beginning. 400 Block - Butler Performance 23 November 2006 09:59 Other examples include 50 or 55, which indicate a 350 or 455, respectively. The 75-degree unit seems most common and tends to provide the best exhaust system and chassis clearance. We'll be back on Tuesday, May 30. We checked it out for you. Some blocks contain two, three, or five motor-mount bosses depending upon the year and chassis application. Our office will be closed to honor Memorial Day on Monday, May 29. However, it may require some extra torque converter stall to allow for a little higher idle required by the higher By mid 1974, more than 1,350 orders for complete sets were on backorder, yet Pontiac assembled fewer than 1,300 complete orders! Engine Displacement: 455 ci Horsepower: 550 Torque: 575 lb-ft Bore/Stroke: 4.155/4.21 Block/Crank Combo: Pontiac 400 block, Eagle cast crankshaft Bore/Stroke Ratio : .98:1 Rod/Stroke Ratio: 1.57:1 On blocks produced in 1970 and after, you will find 350, 400, or 455 stamped towards the left side of the front of the block. Year Make Model Trim Engine Finish adding vehicle Pontiac 1970 400 YZGTO Ram Air lll Rebuilt short block forged pistons 068 cam Refurbished Tech Articles; Pontiac Block Casting Information . SKU: BP-SB-Kit-400-4000-557. The Pontiac 400 was a powerful engine. The Legendary Pontiac Ram Air 400-Cubic-Inch Engines - LiveAbout Parts interchange, tuning, proper combo, or even theory-we'll answer all the tech questions we have room for. It is one reason you can get away with injecting nitrous with all of its extra energy potential. 406-412 CI short block kit Complete kits with an assortment of carbide burrs and abrasive rolls are available from Mondello Performance or Standard Abrasives. Cast iron is generally very strong up to its elastic point, but tends to shatter once surpassed. Alternatively, you can easily convert to an adjustable valvetrain using H-O Enterprises' SK-71 kit, which includes spacer washers and adjustable locknuts that work with your existing positive-stop rocker studs, rocker-arm balls, and rocker arms. Create a custom package tailored to you the buick tranny being a good one and the pontiac having huge holes and cracks all over. By contrast, liquid gasoline's flow characteristics remain nearly constant under decreasing temperature conditions; any temperature drop alters the gasoline/nitrous pressure ratio, in turn causing air/fuel ratio fluctuations that create an over-rich condition when it gets cold (that's why most nitrous racers use bottle-warmers). Engine Components- Internal - Rotating Assemblies & Stroker Kits - 400 Blocks (406-495 cu. These engines, such as the Super Duties and R/A-IV, received forged-aluminum units. 3.750" Stroke (Assembled), Butler Performance Custom Short Block, 400 Block, 433-440 cu. Stettner thinks this is the best way to go on a high-end system, since the bulk of the fuel is supplied at a pressure more equal to nitrous, yet injecting gasoline as the secondary fuel sufficiently cures any detonation tendencies. The factory cast piston is an excellent design. Your rebuild can include either, but modern bearings do not include the required feedhole, which renders the feature useless. We can build you anything you want. Muncie is known for the M20 wide ratio 4-speed, M21 close ratio and M22 close ratio "rock crusher". Air & Fuel Delivery; Apparel, Decals, Books, Gift Cards; . Pontiac blocks featured two freeze plugs per side through 1966. Retaining the stock 6.625-inch length, the quality steel forging was heat treated and blasted with metal shot to improve strength while being magnetic particle inspected for minute cracks several times during the manufacturing process. the transmissoins will not bolt up probraby more horeses in the pontiac. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. It seems to me that a nitrous oxide/propane combination could solve a lot of problems typically experienced on a nitrous/gasoline system, such as fuel-lag and detonation. I have problems throwing my long V-belt with the 5-inch-od aftermarket pulley I'm running now.Paul DyerSan Angelo, TX. Although big power-adder numbers on propane aren't practical using propane as both a primary and supplemental fuel, things get real interesting on hybrid fuel setups. Long-shank burrs are needed to reach deep inside the ports, but that in turn requires the ability to control the tool's motor speed to avoid twisting the long shank, so you should add an inline rheostat or power-control unit if your electric grinder lacks adjustable motor-speed controls. Butler Performance 557 Casting Budget Short Block Kit, 400 Block, 433 It is located on the front of the block, just below the deck surface of the passenger side. a Web address or phone number for Legendary Auto Interiors?Dan JohansenBrookings, SD. The six- or seven-digit numeric stamp just above it is the engine serial number (ESN), which is the engines sequential build number. Trans has a mi Relisting due to buyer not making payment. When searching for a block to use in a project, one from the model year of the vehicle is ideal since the engine and transmission mounts should correspond with those of the chassis. But in reality, it is considered a medium size level engine. Where Do I Get . $ 90.00 .010 $ 90.00 .020 $ 90.00 .030 $ 90.00 Modern forgings have lessened their desirability today, but they remain fairly valuable. Muncies supposedly didn't come in vehicles past 74 or 75 but some Canadian cars received them later on. You'll need to notch the cylinder-bore bottoms for clearance. 10-12 weeks (slightly longer for full custom pistons). It mounts to a cast-aluminum adapter thats bolted to the right side of the block toward the rear. The standards were pretty much interchangeable back then. 46 heads to larger valves, it is important to procure valves of approximately the same length as the originals. This can be a problem on gasoline-fueled street cars running moderate levels of power-adder where driveability remains a concern. Pontiac 400 longblock 1973 good casting not the later thin wall castingsNumber 16 high compression cylinder headsHas slight knock and havent torn it down at all to find issue just moving to lsHave video of running with good oil psi and a later video with the knockHeads to oil pan Pontiac short block complete with crank,rods, pistons and cam. 46 heads specifically, these are high-compression heads used on 400ci two-barrel engines rated at 290 hp. The transmission should bolt up to the bell housing with no issues. Tech Articles; Pontiac Block Casting Information; Pontiac Blocks- Bore & Stroke; Pontiac Heads; Pontiac Engine Torque Specs; . As stroke was added to increase displacement, main bearing diameter was increased to maintain sufficient crank pin overlap for adequate strength. The blocks tall deck height allows the use of a relatively long connecting rod with a center-to-center length of 6.625 inches, which produces a good rod-to-stroke ratio. Its best to use the filter and adapter that was originally installed on your engine, unless a suitable replacement is available. Pontiac engine builder - DCI Motorsports On the street, where maybe you could easily run a 150-200hp nitrous kit on pump gas, with propane as both the primary fuel and the supplemental fuel, Vizard says to back this down to about the 75-100hp level. are they worth mesing with, i mean im probly going to be on the highway with this car and on the track from time to time so i want a good launch but i dont want to be at 3k RPM in final gear at 70 mph. They are bored & honed with a headplate, cam bearings, freeze plugs, and a new oil dipstick tube is installed. 4.000" Stroke Running/driving in my car. Right here: Legendary Auto Interiors (Newark, NY; 800/363-8804; www.legendaryautointeriors.com). Cast pistons were used in essentially all production Pontiac V-8s, except for some of the unique maximum-performance engines. Block casting number is 481988. . 4 barrel carb. Steel forgings are tough but the process is somewhat expensive. For cars running lots of nitrous, mixture cooling trumps vaporization concerns, especially if running race gas optimized for use with nitrous oxide. what is the wrap sheet on those. pontiac 400 engine block Blueprinted Pre-Owned $1,800.00 nitemare68 (47) 100% or Best Offer Freight 49 watchers Sponsored Pontiac 400 Block Clean Standard Bore 9790071 Pre-Owned $1,200.00 pmd455 (195) 100% Buy It Now Free local pickup Pontiac 400 Engine Guide - Muscle Car Club The Fora platform includes forum software by XenForo. Aftermarket units are also available from your favorite Pontiac vendor. 400, 428, 455 common Short Blocks Starting at only $5200! 421-455 Main Bearings - 4221M Std. Pontiacs basic I-beam connecting rod was introduced in 1955. Cash and carry only. The only issue will be to get the right spline and pilot bearing for the clutch and crank up front and the correct yolk and drive shaft length for the back. Ad will be removed upon sale. I am NOT looking for a CORE. Welcome Guest My Account Order Status Wishlist (866)762-7527 . Crankshafts produced through 1958 were steel forgings, while castings were used exclusively in later years. 2786 Hwy 43 North This 9790079 block is a 19681969 350 casting. When you compare the power differences of a 400 small-block Chevy with a 400 Pontiac, there's a huge difference between the as-produced versions and today's hot-rodded descendants. call 509 four five seven fifty five 55 Pontiac short block complete with crank,rods, pistons and cam. Cylinder head bolt holes are drilled and tapped through the deck surface and into individual bosses within the water jacket walls. As such, they emphasize low-end torque over top-end power. New old stock (NOS) units were still available from GM dealers until just a few years ago, so examples shouldnt be very difficult to locate. of .200 wall thickness @ 4.400 bore. sorry i didnt mean to make 2 post! Block casting number is 481988. As injected into the intake manifold, propane is already in a gaseous state and completely atomized, so there is no distribution problem compared to liquid gasoline, which mostly doesn't vaporize until it enters the combustion chamber. This is a quick and easy way to narrow down the vintage of a particular block when hunting for possible options at salvage yards or swap meets. This keeps any established nitrous/propane flow ratios nearly the same under temperature fluctuations. That's not good: At least 15 percent of the fuel must already be vaporized at intake valve closure to initiate effective combustion. Unlike many other makes, Pontiac V-8 bolt holes do not extend into the water jacket, so no thread sealer is required during installation. Cranks are all ground undersize, the rods are all re-sized, and have ARP bolts installed. Pontiac 400 Short Block Motor Engine 9790071 1968 1969 1970 on 2040-parts.com. All parts visible are included as well as two complete wiring harnesses and both factory repair and rebuild manuals. To be on the safe side, Stettner recommends starting with propane jets that are about eight sizes bigger than the equivalent gasoline jet. Why is there such a difference between a 400ci Pontiac and a 455, power-wise? Injuns - Short Blocks - PontiacSpeedShop 4.350" Stroke (Assembled), Butler Performance Custom Short Block, 400 Block, 487-495 cu. It should be replaced if it shows any signs of inaccuracy or pending failure. Butler Performance Budget Short Block, 400 Block, 406-412 cu. To get a 400-inch engine, Pontiac started. ft. at 4300 rpm with a small 240's duration street cam that was built for Dennis Ryncarz Jr. Although it found its way into many 1979 automobiles, those were actually purpose-built leftovers manufactured in 1978. Questions will be answered in the print edition or on HotRod.com. Even at 75 hp, when triggered Vizard says the "power hits like it was attached to your finger." But it's been like that for years, with the people's car maker slow to pick up on booming niches like mid-size MPVs and SUVs, or folding tin-top cabrios. According to Vizard, this is because gaseous propane takes up more space in the inlet manifold compared to a liquid fuel like gasoline. in.
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