I put a 6.4 SRT cam in a 3/4 4x4 5.7 with a big tool box on it and you could barely tell a little TQ was missing down low but the top end had a whole new attitude. Instead of barely running out of breath right at the shift it was now pulling hard at a WOT shift. That was with no tuning. Now knowing about the BGE cam if I did it all over again I would probably use the BGE cam in a very heavy truck and the SRT cam in anything else. With proper tuning I still might run the SRT cam in a heavy one.