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May 11, 2024 · 923 posts · Joined 2023. #8 · May 11, 2024. The presenter of the full video states that Pontiac was positioned as GM's performance division, January 2024, the Camaro is done, Mopar is not making an ICE super car and there is a void in this segment leaving Mustang with a corner on the market. Using what looks like a licensed Firebird graphic ...
Aug 19, 2022 · Use the part (engine block or cylinder head) date code to identify the model year. On engine blocks, this code is usually located on the top center of the block, near the distributor. On cylinder heads, it can be "inside" (under the rocker cover) or on the outside. The format of the code is one (1) alphabetic character followed by three (3 ...
Aug 28, 2018 · This means #12 heads would be for all RA III applications and for any Firebird or Tempest with the 400 cubic inch V8, manual trans and 4 barrel carb. The #13 head is for 400 cubic inch V8, M40 auto trans with 4 barrel carb used in Firebird, Tempest and Grand Prix.
Feb 23, 2023 · With 91 octane and 9.3:1 we can run 36 to 38 degrees total timing all in by 3,000 RPM. Higher the compression, the less timing can be applied with today's pump gas. If I were running a stock engine with the original 10.25 (10.75 claimed) compression I'd also probably be limiting total timing to 28°.
Sep 29, 2019 · The two books are titled Building Pontiac Torque and Power the Sandoval Performance Way, the second is Building a Strong Pontiac Combination for the Street. The two books are a pair since the first book covers a lot of short block info while the second one covers the upper end (heads, intakes, fuel, ignition, etc.). Mr. Sandoval goes into how ...
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Feb 12, 2024 · Often see in the Pontiac Forum from time to time about someone discussing their “big block 455” or their “400 big block”. At a recent car show, when discussing my 69 GTO Convertible with another car fanatic, I unwittingly said “400 big block”. And they corrected me saying Pontiac never had a big block. I went online and did research ...
Apr 20, 2018 · The "670" heads are correct for your engine block code, YS. The YS code indicates a 335 HP 400, automatic, found in the Tempest/GTO body. It is likely that someone may have attempted to replace the original engine with a like engine from 1967. The 1967 Firebird 400 engines were all rated at 325 HP, to include the Ram Air engines, which of ...
Jan 26, 2024 · pontiac 400 specs. i have been doing a little research. I Have got a 400 with a date code from late 73 in my 71 T37. I know of two major upgrades I need to make to make it come alive. performance is not what it should be. one will be going from a TH350 to a tremec TKX along with a gear set change.
Mar 28, 2009 · the 400 also had better heads, i.e. better valve angle, bigger ports, more flow, bigger valves, screw in studs, guide plates, better combustion chamber. 400 was 1967-up. 389 was 1959-66. if you want to keep the OEM look but upgrade, bore the 389 to 400 CID. have screwed in studs installed the heads.
