Is the rubber in the motor mounts soft? They can get really soft if exposed to a lot of oil. What rpm does it idle at? Might just need to bump it up a hair. Could also be timing related.
I'll check the motor mounts, in gear the idle is 700 RPM out of gear 1000. I have the timing set at 20 degrees initial. The trans has a 2200 to 2400 RPM stall but it may be to tight for the cam in the car, which I don't know what it is. The motor makes between 12 - 13 Hg out of gear and drops down to 7 - 8 Hg in gear.
