Well I was hoping someone on here could help me on that. It is why I took close-ups. I am going to guess since every receipt I got with the car was from summit that the previous owner used a Sealed Power Set. $400 buck set that he paired with a cam that was wiped in 2 lobes. I did not do any port work to the 302 heads. Stock size valves for the 1990 production motor. .030 over and the crank turned .010. I am going to guess around 9:1 but would appreciate any advice on it.