Anywhere from, say 80, to 180lbs. What you are looking for, really, is a difference. One that is 30, to 40 lbs., lower. A good small block, with half life left, should come in around 120. A new motor, 150, a high compression race motor, 160, to 180. Anything below, say 80, may require attention, soon.
4.000x3.750 with 8.5:1 compression
305 Small Block Chevy engines typically were 8.6 compression ratio and would use 87 octane fuel.
It is a small block
The small block chevy turns in a clockwise rotation.
how do i set the timing for a chevy 350 small block?
It is a small block.
Yes. what is the question?- about a sm. block chevy.
yes
Yes.
Theoretically, yes.
1,8,4,3,6,5,7,2.
Yes, they should fit ok. 305 heads should bump up the compression a little.