Hi Jim, I don't have a 3000 stall in my Vette, but I did have one in my 78 Z28. That car had a built 500 hp 454 and to be honest, the streetability of that car was not affected. I honestly couldn't tell the difference....until I went back to the track. The only way I can describe it is to say there was no bog. My stock convertor was in at 1900 rpm. My motor's power band was 3000 to 6500 so when I went to the 3000 stall it was like dropping the clutch again, only with a lot more power. (originally my car had the 350 with a four speed) If I still had it I would be MORE than happy to let you experience it first hand! I let a friend of mine drive it one night and he got out of the car shaking, he said he had never driven anything with so much power! That was back in the 80's, we didn't have 405 hp factory cars back then!