Nov 30, 2019 · The part that puzzles me is the 46 head had a 1.96 intake valve and a 1.66 exhaust. So machine work is required to move it out to a 2.11. There are so many other Pontiac cylinder heads out that that are already 2.11/1.66 or 2.11/1.77, so why pay for the machining if you don't have to. On my '72 Leman's 455, I run a 7K3 set of heads (off a 400). pontiac 6x heads. Jump to Latest Follow. 6x are the go-to performance pontiac head. The one downside is they have very large chambers, so on a 400 they will require domes or lots of milling to get anywhere close to a compression that would support 500 hp... unless he want's to go forced induction...
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  • hello everyone I have a 1973 455 30 over with 4x 1h heads,performer rpm intake and a lumpy sounding cam. I just picked up a set of 6x heads,the secondary code is a 4 stamped on a diagonal.does this seem right?
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  • 1970 Pontiac 455 $1,600 (nhm > Epping) ... Pontiac GTO Firebird 6X Cylinder Heads 400 455 $0 (bos > Framingham) pic hide this posting restore restore this posting.
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  • Learn more about the 2008 Pontiac G6. Get 2008 Pontiac G6 values, consumer reviews, safety ratings, and find cars for sale near you. If you're in the market for a sporty domestic midsize sedan, the 2008 Pontiac G6 is right in line with the current offerings from Ford and Dodge.
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  • Pontiac Head Specs. Click Here for Edelbrock Aluminum Head Installation Sheet. 6X. 75-79 350 & 400 ALL 75-76 455. see chart below.
Jul 14, 2016 · Item Is For Sale [email protected] or Call Steve 918-745-0784 30.000 NOS GM Parts. casting numbers are on the rear of the engine where the tranny mates up. check yearone gto calalog for all engine and heads ID numbers, there are also more sites with ID numbers on the web.
Edelbrock Pro-Flo 4 EFI System for Pontiac 326-455 C.I. engines. The EFI system comes with a 4150-Style satin finish single plane intake manifold and 29 Lb/Hr injectors capable of 450 HP with 58 p.s.i. fuel pressure. 1974 Pontiac Trans AM 1974 Pontiac Trans Am Super Duty 455, with 4 speed rare factory M-21 close ratio. Numbers matching 47,000 all original... Check price. 47,812 Miles.
HAS A REBUILT YW CODE 74 455 WITH 6X HEADS, SMALL RACE CAM, EDELBROCK INTAKE AND 4 BBL CARB. DUAL EXHAUST, 350 TURBO TRANS, AND 10 BOLT POSI WITH 355 GEAR. HAS POWER STEERING AND FRONT POWER DISC BRAKES. ALSO CAME WITH AC BUT SOME PARTS REMOVED. We have done extensive research and development on cylinder heads with a J.K.M. flow bench. We use an in-house Superflow 901 dynomometer to test and maximize every part that we make. We are the only Pontiac business in the world that has six CNC machining centers in-house to build aftermarket Pontiac parts.
455 Head Comparison: Regular 455 head, Stage 1 and Stage2 heads. by George Nenadovich. Here is side by side comparison of 1970 455 heads. Both heads have the same casting number. Notice how close the Stage 1 valves and they almost touch, you can barely fit a dime between them. Heads courtesy of Dennis Wheeler. DFW or FLW Files A Package of more than 2925 flow files for use with Dyno simulation programs. I have formatted each cylinder heads information into individual files for use with different versions of DeskTop Dyno, DynoSim, Comp Cams CamQuest program, Dynomation Versions 4 and 5 and Performance Trends Engine Analyzer.
1973 Pontiac 455 ZC Code Block$550. Cleaned, magnafluxed & ready to ship. The bore is .060 and will need to be sleeved. Pair #4X (4H) Heads$425. 1973 400 High Performance 98.94CC. Complete, magnafluxed & ready to ship.Jul 04, 2011 · Now I'm installing a nice set of 6X#4 heads off a 1978 W72 400 Trans Am, will give me the same compression as above heads of about 9 to 1, nice low mileage heads I found, they still look new !-- Edited by pontorquer on Monday 4th of July 2011 08:24:40 PM _____
May 04, 2012 · My 400 is bored .030 over with forged flattop pistons. I'm trying to attain the max safe pump gas safe compression ratio. The #13 heads I have would be too high with flattops, and it's cheaper to get 6x-4 head over another set of forged dished pistons. I have 6X8 heads but I'm not sure I attain a high enough comp ratio. I also have #94 heads but they are smaller valves and pressed studs.
  • Ksp of nacl at 25 degreesAt Pontiac, the GTO offered the division’s 455 V8 as a beefy optional engine. Pontiac also discontinued its “economy”-tuned 400/2-barrel carb motor this year. Outside, the Goat lost its sleek hidden headlight option in favor of four individual headlamp nacelles, still surrounded by a distinctive Endura nose.
  • Girsan 9mm pistolsPontiac 6x -4 cylinder heads $400 ... 1976 Pontiac Firebird Trans Am 455 4 Speed $5,200 (dublin / pleasanton / livermore) pic hide this posting restore restore this ...
  • Beesha cayrIn Pro-Touring trim this Pontiac has: • 1979 Pontiac Grand Am 2 Door sedan – Pro Touring A/C, PS & PB. Engine/driveline • 455 CI Pontiac V8 – 74 YY block 6X heads .030 over rebuild • Edelbrock Performer Intake and Carb • Mild cam – don’t know specs • New distributor w/65K coil, cap, rotor, wires, and Denso plugs • Original ...
  • Aaj faridabad ki satta jodiStock Pontiac Head Specs. * During my searching for information, I found quite a few discrepancies in the sources I was viewing. In light of this, the 'Year' entry, as indicated by the chart below, may actually represent the year that the heads were cast, versus the...
  • Binary exploitation pdfKRE Aluminum D Port Head. ... 1979 Pontiac motor. Displacements from 350 - 455 cid. ... to build a set of Stock Pontiac 6X heads that will flow 240 cfm and net you a ...
  • Conjugation in bacteriaFind many great new & used options and get the best deals for Pontiac 389 400 455 215cc 72cc Ram Air IV Hyd-R Complete Aluminum Cylinder Head at the best online prices at ebay!
  • Republican voting record on veteran benefits1976 Trans Am project car. Original 400 car with matching numbers and 6X-8 heads. Power window car. Interior is complete. Paint is original. Engine does run but tank is out of car and needs a battery. It’ll need to be towed or trailered. This is a project car. It has rust. Rust is worst in the rear. Subframe looks ok. May need floor pans.
  • Firman generator partsJan 26, 2010 · Engine Tech - Pontiac 400 build Ideas - I am getting ready to do a 400 build for my 65 GTO. This is my first Pontiac and do not know what combos work. I am starting with a 75 TA engine with 6x heads.
  • 2 butanol intermolecular forcesDec 12, 2005 · Pontiac motors are completely different from the SBC, and the heads are not interchangable. The Pontiac 350 - 455 engines all use the same big block design and outside dimensions.
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Pit Stop USAsells Cometic Head Gaskets C5769-040 and other products from Cometic at low everyday prices. ... Cometic 4.200 MLS Head Gasket .040 - Pontiac 400-455 (0 ...

Edelbrock Pro-Flo 4 Sequential Port EFI System for Pontiac 326-455 C.I. engines. The EFI system comes with a 4150-Style satin finish single plane intake manifold and 35 Lb/Hr injectors capable of 550 HP with 58 p.s.i. fuel pressure. 2U87X3(or 4)N1***** for a Formula The 'X' is for the SD engine The idea of the registry is to publish each model year in viewable format. The format will include VIN numbers and RPO code options along with cowl tag information. The registry is a work in progress and will only be successful through participation from SD 455 enthusiasts.