If there is no pinging go to the track,chassis dyno make a reading/run. Dump in half a tank of race gas and see if your times pick up. If they do yes you have detonation going on even if you can't hear it. When we dynoed my very open chamber RAIV 400 zero decked TRW piston motor no audible detonation standing next to the motor. Race gas picked up almost 10 hp.
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Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune [email protected]
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
1964 Corvette Coupe 327 4 speed
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