Alright, went out and did a sanity check. Vacuum advice is hooked to the standard vacuum port just below the base of the bowl, so manifold vacuum.
Disconnected and plugged the vac line and checked initial timing. Its set at 5 degrees, manual calls for 4 degrees. Idle is set between 450-550 rpm. With vac hooked up, timing is 6 degrees at idle. When throttle is applied total advance goes up. Everything for all intents seems perfectly fine.
As a correction to my earlier statement, the vac advance canister on here is the one that came with the HEI, thus for the 250. I tried to swap but its a different style mount than a points dizzy canister thus I left it. Is the advance canister engine specific?
Playing around under the hood, whenever throttle is released this occurs slightly, Its merely amplified 10x when under engine load.
Last edited by HFfarms; 02/14/2024 1:28 AM.
