19 69 GTX
Well-Known Member
- Local time
- 2:19 AM
- Joined
- Apr 30, 2016
- Messages
- 428
- Reaction score
- 293
Got a new 69 gtx 440 and when on the throttle it hits hard but I hit 4500 rpm it starts popping and cracking won't go past 4500 rpm. Any idea what could cause this. I swapped ignition boxes and put a fbo one on it same issue. Has a new carb as well. Could something in distributor be the issue or maybe coil. It has a stock distributor and msd coil but coil runs through a ballist. I didn't think you would run the msd coil through ballist it needs full 12 volts.