Join Date: Sep 2000
Location: Washington, Michigan USA
Re: Timing & Vacuum Advance 101
Okay let me get this straigt. I've got an Edelbrock 1407 in my 85 iroc. My vacum advanced needs to be hooked up on the left port
I'm not familiar with how the Edelbrocks are ported, but you want it connected to whichever port provides full manifold vacuum (sometimes called "full-time" vacuum) at idle, not
the one that's a "ported" vacuum source, with little or no vacuum at idle.