new motor stalls at low RPM

bill paynter said

Motor is stock and has 30k miles and was running in the other vehical, it has performer intake used, and edelbrock carb. and new stock Distributer, all vacum ports have been plugged including the one that was for the PVC line
the only thing I did was install new cam/lifters and put it back together.
I was also thinking it was vacum leak but never had one just quit like this
at low RPM it's almost like it looses spark, I'm going to try a diffrent carb. this weekend

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Bill,

I'm going through the same thing with my 74 Dart Swinger hop up 318 rebuild . If you don't have a vacuum leak its the Edelbrock carb. Mine did the same thing you describe after I installed a larger cam (284*/.484" hyd.). Low vacuum makes the Edelbrock carb think it's under power and raises the metering rods, floods out the motor. I bought the Edelbrock #1484 spring kit and ended up installing the blue springs (two steps lower vacuum) and it runs like a scalded dog after some fine tuning. If you need a copy of the Edelbrock carb manual, send me your email and I'll send it to you.

Good Luck!

Keith