1971 455 pontiac engine timming

Discussion in 'Buick FAQ' started by 68 buick sk, Jul 15, 2012.

  1. 68 buick sk

    68 buick sk Well-Known Member

    Hi I have an 71 pontiac 455 325 hp stock engine in my 68 buick skylark. what should be the timming set at,thanks


    Denis
     
  2. DaWildcat

    DaWildcat Platinum Level Contributor

  3. Houndogforever

    Houndogforever Silver Level contributor

    Two questions.
    1) Who put a Pontiac engine into a buick?
    2) Do Pontiac's like the same timing as buicks? I always hear on this board that Buicks like 32-36* and all in by 2500rpm. I have always wondered what other makes like for timing.
     
  4. BQUICK

    BQUICK Gold Level Contributor

    Pontiac engines like a little more timing than Buicks. Buicks don't need or like as much due to the fast burn head design.
    I'd say your 32-36 is more what Pontiacs like.

    With iron heads, I've found (in my 30 yrs of racing) Buick 430-455s like 30-34 max. Aluminum heads can get away with 34-38 due to better heat dissapation.

    Remember all say 4 deg of extra timing is going to do is give a little more bottom end at the risk of detonation. Not worth it IMO.
     

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