We took my car in this afternoon. With the vacuum advance blocked off engine file was at 0° so we bumped it up to 10° at idle. I’m gonna run it and see how the car is affected. I’m still gonna work on the shroud. I know it’s gonna help a lot
If it was timed at TDC, if I was your engine I'd be puking my guts out at idle too. :)
Stock mopar SB engines tend to like 10-14 BTDC. When you have the timing set near TDC, there is a lot of unburnt fuel headed out into the exhaust port and manifold/headers where it finishes the combustion process. Folks that break in an engine and see glowing headers know all about this. Retarded timing.
Nice job j par with the question right out of the gate!