Join Date: May 2007
Location: Baltimore Maryland
Re: Hesitation Problem-327ci
Let's put it this way, I run a Comp 270H and I get 18" of vacuum idling at 950rpm(park/neutral) and 12" idling at 750rpm(drive). The 270H is a 224/224 @.050" and 470/470 lift. I am also running Rhoads variable duration lifters which reduce lift and duration by the amount of lash you set into them. I run .020" lash so at idle I have 204/204 @.050" and 450/450 lift. Once I hit 4000rpm, full lift and duration are restored.
Charlie Knudsen 67 Camaro RS/SS 350 TKO 600, 4.10's, AFR 195 Street Heads, Comp 270H, Rhoads Lifters, Crane Ignition, Pertronix Dizzy, Performer RPM Q-Jet, Heavily Modified Q-Jet, Hooker Comp Headers, MagnaFlow 2 1/2", 144 Decibles(Alpine CDA-7998 Head Unit, RF X7 and RF 750X Amps, MB Quart Mid's & High's, Kicker L7 12" Solo Barics)