[FordGtMan]

Hello, i want to see what kind of numbers i should look for in my 302. I would like to see if my motor is worth upgrading or if it needs a rebuild before doing so. I know 10%compression within each cylinder is considered good, but what kind of numbers are good also? I am planning on doing a compression test this spring break so any information would be helpful. Thanks in advance.

[MIL1ION]

Compression ratio is different than compression reading.

HO 302's was 130-170 psi

NON HP 302's states lowest cylinder to be within 75% of highest

which 302 is it ?