Hi, This is my combo looking for a nasty solid roller for street/strip car. bbc 4.500 bore 4.000 stroke 6.385 rod 11.1 compression,Afr315cnc heads with 2.250int. 1.940exh., turbo 350 with 3800 stall, 28.5 tall tire with 4:56 in a 3500lb. car, rpm range 7200-7500 max. I can call you if you want or if you need any more info let me know. Thanks, Mark.