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Pontiac GTO Forum A forum community dedicated to Pontiac GTO owners and enthusiasts Come join the discussion about performance, modifications, troubleshooting, maintenance, history, and more!
400 block casting numbers | Pontiac GTO Forum Pontiac screwed up earlier with the '65 and '66 blocks giving thin wall casting a go, but after warranty claims went through the roof they abandoned the idea and the 1967 block was one of the beefiest blocks produced I've seen some '67 blocks at 090" over and the cylinder walls were still decent
The Rarest Pontiac Engine Ever Produced | Pontiac GTO Forum The rarest Pontiac engine that HotCars could find was the mighty Pontiac 421 Super Duty V8 featuring in the 1962 Pontiac Catalina It was a display of Pontiac's dominance in the early '60s and could be purchased as a crate engine and used in racing
OPTION CODE LIST? - Pontiac GTO Forum PONTIAC A-BODY ACCESSORY CODES 1964-67 These codes are on the bottom of the trim data tag found on the fire wall They primarily identify equipment or options installed Some codes only ID option and not specific equipment These codes are made up of a number (Excl #1) and are followed by one or more letters The number in front identifies group
Whats all in PHS documentation? | Pontiac GTO Forum I have the billing history card, the option sheet list, a page with breakdown of trim tag power team, a letter from PHS, a page with GTO production figures, a page about window stickers, a Pontiac news release dated Sept 13, 1964, the AMA specs for 1965 Tempest LeMans, and a laminated window sticker
Reference: Camshafts - GTO Factory Specs - Pontiac GTO Forum All Pontiac engines benefit from exhaust upgrades such as the RA exhaust manifolds or headers The "744" and "041" require better flowing exhaust You may also need a higher stall converter for automatics and better gearing These 2 cams are more street strip type cams in a 400CI
Understanding rockers - Pontiac GTO Forum For those engines, Pontiac used 7 16 rocker studs larger diameter pushrods So, it might be a good idea to buy some stronger pushrods Considering all the necessary parts changes needed, I think that if I wanted more performance, I'd prefer to stay with 1 5 rockers go with a slightly larger cam, new lifters, matching springs
Pontiac 428 build | Pontiac GTO Forum So, good news I sold my tripower $2,200 And I sold my old Munci after installing the new one $650 which took $2,870 off of my build cost Which means I will begin the engine build soon Minus machine costs I will begin shooting for about $7,000 Heads: will be butler fully ported 72CC D heads
1968 GTO Vin and fender tag decode | Pontiac GTO Forum First post here , hope this is okay I am in the process of picking up a 68 GTO coupe, the VIN is 242378B114770 and here is picture of the “ fender tag” This will be my first Pontiac I will try and get the codes numbers off the engine block also I am having a little trouble with the trim