Ditch the crossram and find a tunnel ram, the cam is to small too. My 605 has small heads (386cfm@.700), 10.4-1 compression, the cam is a Bullet solid roller, .767/.676, 288/292@.050, 113 center installed at 111. It made [Email]852.8hp@5782rpm[/Email] and [Email]818ftlbs.@4818rpm.[/Email] I guarentee you'll love the torque it makes.Dave