The previous 440 ci ran out of breath above 5,800 rpm with its stock valvetrain. To keep pace with the extra cubic inches, we replaced its hydraulic flat-tappet cam with a Crane roller cam and Ultra Pro solid roller lifters. Valve lift is 0.543/0.552, with 296/300 deg. (advertised), and 246/250 (at 0.050 lift) duration. The nearly $1,200 cost of the roller-cam upgrade defies the original budget Max Wedge theme but is needed to fully exploit the 512 ci of displacement. Crane’s roller lifters fit the block without machine work.