4cylpro
05-05-2011, 03:58 PM
I just recently put long tube headers with new dual exhaust system on my 79 impala with a 305 small block. I also put a new accel cap an rotor kit, with new spark plug wires an new spark plugs. The car misfires at idle the whole way to red line, an gets worse as the rpms increase. It also has trouble making it up hills. I was wondering if anyone has some info on it and if it ever happened to them, what they did to fix it. Thank you