I have a 97 camaro ss 30th anniversary which has the lt4 conversion Heads,cam,intake and am currently running the stock lt1 comp program was wondering if this would dramatically effect the performance or not. Car is rated at edelbrock as having 406 horse and I just dont feel it
I believe so. The PCM is under the understanding it's the Lt1 engine vitals while engine is LT4. I'd take it to a reputable tuner and get it tuned. You'll be surprised what a tune will do for a car, especially a modded one.