68 camaro 402 yes I ran the numbers. 30 over some crazy 500 inch lift cam. Last year popping at 4,000 rpm. new every thing dist,cap,rotor,plugs hah, wires for headers. All I could find was some ngk. yea popping at 4,000. Got new ac delco Iwill get the number. O yea she's back the car pulled up and the shift lite came on. I thougt the motor was toast. Start with the basics. 50 plugs. the fix The dist,wires, where not the issue.