The top rpm range is. And as Kris said, 50 bigger cubes drop the rpms of the cam 500 rpms. So have to take the usable rpm range and drop it 500 rpms for ur application.
What's the reason you are set on a roller anyways? Than are you going hydrolic or solid?
Crane Cams 359351 - Crane Hydraulic Roller Camshafts - Overview - SummitRacing.com
1978 Continental 460 2.50
2003 F250 CCLB 4x4 7.3 4.10 on 35s
1977 Ford Wagoner 351M/C6203/205/D60/10.25
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