Originally Posted by Pdmracing
Replaced the autolite racing plugs. prior owner had them gapped @ .25 I opened to .4
Could this be a fuel vent issue?
Why would it run fine @ the dyno & not on the track(attitude of the car? front end lift @ speed?)
Have you pulled the plugs back out of it yet ? Maybe the prior owner didnt gap them to 25, maybe they closed thereselves up hitting the piston ?
You do need a fuel cell vent -8 would be good.
Grounds are key 10 gauge wire from each side of the head straight to the battery is darn near a must, I have that and also have 4 gauge wire from each motor mount bolt to the chassis. Running your coil wires next to your dist wires could also cause this. Fuel system not getting enough fuel could also do it, a lot of options to keep looking at.