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Stu, what elevation are you at? Going from sea level to 5000 feet can change the reading by 30 lbs or so, supposedly.
Your readings sound a little low. I would expect around 140 to 145. Michaels reading sound a little high. I would expect 170 to 180 for his.
There are so many variables, the guage, the cranking system, throttle open or closed, camshaft timing, static compression ratio, altitude etc.
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John Dougherty
Dougherty Racing Cams
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