Thanks for all the help. This is a learning experience for me because im 17 and this is the first engine that ive actually got into.
This engine is in a 1929 chevy, which is usually just my weekend driver, and im not really sure what the rearend ratio is because i havent really got into that yet. But it came out of a 1978 camaro and it has an automatic transmission. The casting number on the heads is 376450 and it has flat top pistons. the cam is a performance .447 lift. I used these heads because they are the ones that came with the engine when i purchased it. This engine was rebuilt by a local shop, and they told me that it had about 11:1 compression with these heads, and i would have to run 91 octane in it.
Thanks again for the help!