I have posted this on two boards, so if some of you see it twice, my apologies.
My '66 Chevy has a rebuilt 250 that is stock with the exception of a Pertronix HEI. I have very few miles on the rebuilt motor. I have set the timing by sound\feel as I don't think the original numbers would be any good since I switched to HEI. I set the thing to run at the highest vacuum I can get (17-17.5)using a gauge hooked to the valve cover side of the pvc hose. It seems to idle fine and revs fine sitting in the drive, but when I take it for a spin, it hesitates and jerks when under load. When I come to a stop sign and push the clutch in, it will often die.
I have a 1bbl carb that is a rebuilt one. My plugs are AC R44xls gapped at .044
Anybody have any suggestions. I wouldn't mind switching to a different carb if that was necessary, but have some concern about my original air cleaner fitting a 2 barrel.
The truck was my grandpas, and I am trying to keep as close to stock as possible.
Thanks
