Thread: Crazy Pontiac question

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If I am reading things right, the 301 heads had siamesed exhaust ports, rather than the divided ports of the run of the mill Poncho heads, so headers for them will be a fab job from the get go. As to whether they are dogs or not, just like most engines and stuff, opinions differ greatly, but in just making a cursory wander around wikipedia and some other research sites, the 301 is the same bore and stroke as a 302 Chevy, and that engine could be a real screamin' scooter when it was built right. I have always had a soft spot for Pontiacs, even though I let my last one go in 1966; I will watch for your reports and anecdotes of progress on this with some interest.

Edit: Addendum:

I was thinking about this, an often dangerous situation when I do that, and I got to wondering; since all Pontiac engines used the same basic block architecture, and the bore was increased to 4 - 1/16 inches in 1958 for the 370, would a set of later model heads from a 389 fit? If so, you might benefit from perhaps larger valves if the runner volume didn't have an ill effect on air flow. It would also allow you to use a set of headers for a 389 or 400 that fit the chassis at hand; save you from having to custom up a set.

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