Originally Posted by ardmsrt
Well the best reply I can stumble thru is this:
1969 Z28 302 SPECS
Z28 crank 1178
Z28 dome pistons
Z28 cam grind
Near Z28 Head specs 64cc, intake and carb.
How do you replicate a 69 Z28 302?
Best I recall, GM had a pretty solid engineering prowess
when they threw all that crap together...lol.
Looks like they used 64cc heads on the original 302. Also those heads are common in 1.94 valve size. 2.02 will be easy job for machine shop if you want to go oem.
These might work. They are cheap at $419 a set ready to bolt on. The same guys has many casting numbers to choose from. cast and alum.
Performance 327 350 400 Chevy Cylinder Heads 434 SBC Bronze Guides 500 Springs | eBay
Looks like 64 cc heads should work with your stock style pistons. At least that is what the interent says. LOL
They have better options over the gm 30-30 cam. But it should work. i think its solid lift.
Also have you thought about a thick intake gasket. They make copper ones pretty thick these days for chevy. You can just order in the size you need to clear.