Too much timing?

mopowers said

Can you explain how you did the cranking compression test?

Not that it matters - because it is what it is - but I'd expect more than 150 psi with that cam and a true 10:1 SCR. For reference, my 9.6:1 SCR (measured) 340 has an intake closing after yours and cranks 170 psi.

Don't be afraid of giving it more initial advance. If it wants it, it wants it. As long as it doesn't buck the starter, you're fine. I run 26 initial and the 340 loves it.

Click to expand...

I disconnected the coil and cranked the engine over a few cranks. 150 psi is pretty close from what I've read. I may be under 10:1 some that was original figures and after I checked my valve to piston clearance I never worried about it anymore. Let me run the numbers again and see what I get. I know I was .012 under the deck with 5 cc flattops 65cc heads and a .050 head gasket i think my original numbers was with a .028 head gaskets and I opted for the thicker ones.