All you need is a looser converter (smaller). My 408 small block with an 8" converter will sit still at the tree @ 3000rpm, no problem......or you can go to the dark side and get a trans brake.

67 Barracuda street car, 408, e85, 1.38 60', 6.44 @105.9 in the 1/8 mile, 10.19 @130.5 in the 1/4...so far....