Thread: heads question

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i just found out a set of heads i have is off of either a 283 or 327.they have a 60cc combustion chamber,they aint damaged at all so what will they do for my 350 if i have them rebuilt?

That depends on what heads you already have on the 350

It sounds like they are the old Powerpack type heads. Casting #s 896, 520, etc. They are probably small (1.72" intake) valve heads. I have seen them opened up to 1.94 valves. They do not have hardened seats.
I've got a couple sets that I've never done anything with. My machine shop said they "run out of breath", but I remember high-winding 283s.
On a 350, they would give high velocity and be good on the low end.

thank you for the info.i currently have stock 76cc heads on the engine

those heads would be good for good low end grunt but near 4000-4500 they become a serious restriction on a 350 (or any 4.00inch bore)

It would cost more to rebuild them than it would to buy a more efficient set of vortec heads that will out perform them....