4.8 "normal" cranking compression?
Thread Starter
Joined: May 2011
Posts: 8,488
Likes: 1,036
From: Wichita, KS
4.8 "normal" cranking compression? Running a 2006 4.8. LS9 gaskets. (.060 compressed) 706 heads, Tripple 12 Isky cam. (212/212 @ 112 @.050) This motor was just pulled apart. I cleaned all the carbon and crap from the ringlands, gapped the rings at 20/24 and tossed them back in. (turbo motor)
With my engine warm throttle open I'm getting around 150-153psi on all 8. Thought this seemed kinda low? Installed the cam 1* adv from the cam card. 109 CL.
I'm in KS around 1300ft above sea level. So that will cause my readings to be a few psi lower.
With my engine warm throttle open I'm getting around 150-153psi on all 8. Thought this seemed kinda low? Installed the cam 1* adv from the cam card. 109 CL.
I'm in KS around 1300ft above sea level. So that will cause my readings to be a few psi lower.
