I have a 9.35-1 compression 440 I'm looking to swap cams on. Currently has an XE274 Comp. Combo is:

906 heads with larger valves, eddy rpm intake, AVS 800 carb, 1 3/4 headers, going in a 68 Satellite Wagon with 2500 stall and 4.10's.

The XE274 is OK but spongy on the bottom end. Sugguestions? Thanks!