Search Results for ‘compression ratio’

Hi all! So I have a hypothetical question. What would be the theoretical maximum compression ratio (perhaps this is a maximum cylinder pressure question?) a stock late 80’s 302 block and crank could handle, assuming good aluminium heads, forged rods, pistons, main and head studs. Also assume...

OK... ive been all over the internet looking for advice but i cant find any. I have a set of heads for my 3.8l already ported and polished. Does anyone have any idea about how far i need to shave the mating surface of the heads to reach 10:1 compression... i know that the 3.8l has about a 9.3:1...

Hey folks, i have a question that i have not been able to answer or find an answer anywhere for that matter. I have a set of heads that i want to mill.. and i know that for every .007" it will add 3%-5% hp. HOWEVER, my concern is not increase my CR too high that i cannot run pump gas. 93 is the...

so my car was running fine, my timing is good, my vacuum is good, and the carb is brand new and didnt have any problems for the first 1000 miles, I put premium gas in it and now it idles then bogs down at idle then dies. could my compression ratio be to low for premium, is there anything else...