Is all of this going on at idle/low speed rpm's? By 'misfire' do you mean that the engine is running rough like maybe a cylinder is out? What condition are the plugs in and what type of ignition system do you have? Pretty easy to check and see if you wiped a lobe by measuring the lift at each pushrod. What cam and springs? Have you driven the car yet or does this misfire occur while the engine is not under any load? Just thinking out loud to get the diagnostics going.
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69 Bird w/1970 400 block(409 cubes), #64 heads, hyd. roller, Q-jet by Jeff E., original interior, ps, pdb, th350, and 3.73 gears. Pump gas, street driven muscle. 3800 lbs. race weight. Best, 11.39 @118, my son's car.
79 T/A w/463, Scat crank, Eagle rods, Icon pistons, Lunati solid roller, 262/270, KRE 325 heads, Northwind intake, QF950 carb, full interior, ps, pdb, th350, and 3.73 gears. Pump gas, 3650 lbs. race weight. 10.60 @ 126 so far...
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