Remembering checking mine it was steady 43.5 PSI while checking under hood revving engine and only went up when I did a big opening of the throttle. So I beleive it's fairly steady till low vacuum.
Remembering checking mine it was steady 43.5 PSI while checking under hood revving engine and only went up when I did a big opening of the throttle. So I beleive it's fairly steady till low vacuum.
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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