Once again I stand before the elders, seeking their guidance. :biglaugh: Last year I built a 1260 with an approx. compression ratio of 13:1. The pistons were MTC 14:1 pistons but I had to have the valve pockets deepened for the cams I'm running and I had some metal removed from the domes. Fast by Gast did the work and they figured it at 13:1. Anywho, the motor runs like a scalded dog but when I stop and it gets a chance to heat soak, the starter don't have enough torque to refire it. It starts fine cold. What set-up do do they use on really big motors? :ummm: Thanks.