Originally Posted by Moparmaniacc
You are right, Holley says you should have a little bit of transfer slot showing at idle. So for all you guys out there with a mild or stock cam, how much vacuum are you pulling at idle? thanks


470" low deck,10.2:1, Comp XR280R (242/248@.050)solid roller pulls 10-12" and idles nicely at 900 rpm with a Holley 800 DP that's essentially untouched.

Last edited by Dcuda69; 11/01/21 10:16 PM.