A gentleman from another hotrod forum has suggested that my problem may be that I used the large vacuum port on the back of my carb, which used to operate the power brake booster on the donor car , to operate my pcv line. He says that the vacuum canister for the power brakes is actually a sealed canister, and that what I have done is creating a huge vacuum leak. He may be right, because I never had the center head off this motor, only the carb, and I know that my gasket is good between the carb base and the center head. The engine idled fine in the donor car before I cleaned everything up and swapped the vacuum lines when I transplanted the motor.. Denny is right, the carb needs a gasket set and a new float, needle, and seat.---I hope the fellow is right about the vacuum line---I will try plugging it tomorrow and see what happens. I don't really want to mess with the idle adjusting screws if I can avoid it.