Ok guys need your input! =)

Before I had my cams put on my VAC at Idle was at 500 mm/hg (Greddy boost gauge), but since then (after the cams, 272/272) my vac @ idle went up to 550+

is this normal??? or do I have a leak somewhere?

PLEASE ADVISE

Thanks!

 

Seems weird. Normally, after cams, you should see a drop in vacuum. This is why high lift cams have to idle at higher RPM and why people complain about loosing brake pressure etc. Why yours went up is not clear.

Sigfrid

 

hmmm... any other ideas???

 

At idle mine dropped from 17 - 18 psi to about 13 psi after I installed my Works cams. Maybe your timing is off. What RPM do you idle at?

 

840-860