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bobbo195

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  • Opinion on headers or factory manifold on a pontiac engine?

    I have a 72 455 H.O. with factory round port manifolds that continually leak, I am debating on switching to headers but am not sure if the power will be affected all that much, I need some pontiac people to give me some opinions on switching to headers or sticking with factory manifolds, also not sure if I would need to have the head tapped for the header bolts or not.

    2 AnswersPontiac1 decade ago