E estridge New Member Jun 27, 2004 6 0 0 Jun 27, 2004 #1 Jun 27, 2004 #1 I just changed out my cam to an F303 cam and I set the timing and got it fired up and it now backfires thru the intake when I first mash on the gas. WHat is the problem?
I just changed out my cam to an F303 cam and I set the timing and got it fired up and it now backfires thru the intake when I first mash on the gas. WHat is the problem?
R ratrapp New Member Apr 24, 2004 510 0 0 buena vista,va Jun 27, 2004 #2 Jun 27, 2004 #2 possible that the distributor is off a tooth or your initial timing is way off.