I agree Rob. With my custom spec'd and ground Comp hydraulic (basically a XE285HL intake lobe with a larger/less aggressive 301* exhaust lobe and 112* LSA, .545" both sides on lift) my wagon's 440 will TURN 6500rpm readily, but short shifting at 6200 or even 6000 netted me quicker ETs. I used the Pro Magnum lifters and Crane iron adjustable rockers/pushrods and Comp #925-16 springs to enable the hydraulic cam to reliably operate above 6000. The old Crane Commander 302/312* .504/.528" 112*LSA using stock stamped rockers was really done by 6000, with the original setup.
