Vacuum numbers
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Junior Member
Joined: Jan 2004
Posts: 55
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From: West Allis, WI
Car: 1991 Z28
Engine: 5.7L TPI
Transmission: 700R4
Vacuum numbers
I just did a heads, cam, and intake swap, and I think the vacuum is a little low but I'm not too sure. It's a L98 motor with a CC 224/230 cam, and a HSR. The guage was reading pretty steady at 8. Isn't that pretty low? Also, if that is too low, and I don't hear any vacuum leaks anywhere, what else could cause such low pressure??
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