Dave, my old RAIV 40 was that way(although at alot slower times) because I had a major reversion problem with it until I got a smaller diameter header. You have a pretty small size for your HP already. Anotherthing that improved it was more duration on the intake than exhaust. That can compensate for a defecient intake port.You can try more rocker ratio on just the intakes to try that direction without a cam change.
Do you have an X pipe on it? I was impressed with the performance with adding that to my system. It runs as fast with the X,mufflers and tailpipes as it did with th4 less weight of no system and open headers.
You just need to get those Wentzlers better I saw at G&G!
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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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