Hey all, If I can pull 20" vaccum at Idle, 15 to 10 part throttle, and 5 to 1 at WOT, does it sound like the system is working right. These readings are manifold vac. Is there any risk of inadequate oiling? Just looking for some thoughts on this thanks.

 

Is this with or without that goofy mod you did in that thread you deleted? You should have max vacuum while cruising at part throttle also and very little to no vacuum at wot. Vacuum has no affect on oiling.

 

I deleted it because I wanted to gather more data to be sure hence the NA. Turns out it works better than expected and consistently. I'll be rebuilding the bottom end soon, already did the heads. Since there generally seems to be some confusion on weather the system works on a full exhaust or not, I would say it does, you just have to put it 5 inches before your tailpipes. It behaves the way you stated, just my vaccum at idle is around 20-22. The needle doesnt bounce and the idle is smooth.