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Cylinder Heads

Discussion in 'Modifications' started by instro84, Oct 24, 2016.

  1. instro84

    instro84 Active Member

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    are the valves used in the tta heads the same as the on the fwd cars? looking at picking up a set to do some porting.
     
  2. hoser

    hoser Well-Known Member

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    Good question , my guess is yes. GM wouldn't use different valves in a low production / realistically low horsepower / low rpm application. Some of the HD truck heads of the same era used sodium filled exhaust valves but they were thicker stems and not the best for power gains
     
  3. turbo89

    turbo89 Active Member

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    They did in the GN
     

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