Posted by Super-H-Mike on September 26, 2012 at 08:46:51 from (76.164.144.30):
In Reply to: Re: farmall sm posted by mike1972chev on September 26, 2012 at 03:49:35:
That is true Mike72. On an old tractor engine a psi that is close to even on each cylinder is a good indicator of how healthy the engine is. But, the higher the cranking compression the more likely the engine will be powerful, which is what I think he is after. In automotive, a 350 Chevy will run fine with 90 psi even compression, but if you want a motor that builds big power you will want that number much higher. Cam timing and profile can change things drastically as you stated. I have a snortin 454 BBC here that has 185 psi cranking.
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