Thread: cam upgrade! But to low vacuum? experts only!
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Old 10-16-2008, 12:43 PM   #9
rps13drift
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Quote:
Originally Posted by SoguRacing View Post
stock HG is .8mm thick. 1.1 is the next bump up to compensate for decked heads and blocks.
Valve Timing & Engine Performance, blow down overlap and ram effect via camshaft

scroll down to "ram effect"
Very awesome point! I never got my head or my block decked! Could this plus the cams realy be giving me such low vacuum?
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