I had this cam in a 340. TRW stock replacement pistons. Box STOCK edelbrocks with 1.5 rockers. Went NO faster over 6000 rpm. Anything over that was just revving. Went 7.20's in the 1/8th in a '68 Barracuda. 3170lbs with 4.56 gear and 5000 stall. Good bracket cam.