what size cam???

Mike;

The #60403 is a step up with 226/234 @ .050 (268/276), 494/513 lift (526/547 with 1.6 rockers) and 110/106 lobe center rated at 1800-6200 rpm.

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I really like this cam over the other one since you have exhaust manifolds. The extra long guration is great for the exhaust manifolds. With headers, it would be a bit large IMO. 8* more duration on the exhaust is fine w/headers.