I have 220 psi per cylinder and that is only 10.750 to 1 compression.
In your intake manifold tap a small hole for a vacume gauge. Under full load "on dyno" it should read almost zero. If it is produceing vacume then your running lean and it needs more fuel.
Do you have a fuel pump on it or is it still gravity feed ?
You are on the verge of race fuel and it wouldn't hurt , don't use A/F gas it has antifreeze in it.
Set your timing on the dyno under full load , go for highest rpm under load. We use a digital timing light with a tach in it.
Email me direct if you have any more questions, i run a dyno service.
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Today's Featured Article - Show Coverage: Godfrey, Illinois Country Days - by Cindy Ladage. Except for last fourth of July's Old Gold show in Springfield, Illinois, I don't remember when it was so hot. Nevertheless, the heat didn't keep vendors and visitors alike from enjoying the third annual Country Day's Event. Jane Elliott said the event was originally a one man show. "Barry Seiler, owner of Country Town Farm Supply store used to invite people up to the Johne Deere store. He would give hats and a free meal for everyone that brings a tractor." Elliott said while this
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