[QUOTE]Originally posted by NTFDAY
[B]That cam was originally in a 265 punched to 301 with a set of heads that matched double humps. And yes, it had one hell of a rough idle.

I should leave this alone but I cant! Were You casting your own blocks back then? A 265 could just barely be bored to a 283,and a 283 could just barely be bored to a 301. A 265 bored to 301 would have been bored .250. Dont think so!!

What is a set of heads that matched double humps?

And Yes, a 30-30 had one hell of a rough idle.

64 Bel Air, No one here is telling you that a 283 can't be made to run. They will . I have had a couple that ran very good,but I had everything working well together. You just dont want to put a big solid lifter camshaft in a 283 with small heads,small valves,and valve springs that dont have 50 pounds of seat pressure,and think you are accompolishing anything, You're not.

The point several of us here were trying to make is, For 300 to 500 bucks you could find a used 327, 350 or 400 smallblock to work with. Thats a lot more cubic inches to pull a 3500 pound 64
Bel Air. Parts cost no more for those motors than the 283. As a matter of fact,most rebuild parts are cheaper for the 350 than any other motor.

Build what You want and we will try to assist you in any way we can. Good Luck and have fun with your project.