cca 11-246-3 comp cam 274/266 230/236@.050 1800 to -6000 strong mid range 2200+ stall.i have used cams this size in many 454 s 3.30 grear should work ok. but most guys use 3.50 to 3.70 with that size tire . its more CR of engine . port runner size . intake. tune up may be off