Quote:

I don't exactly have a Bob K. camshaft catalog to reference...


Neither does Bob, from what I've determined. It's all in his head so the "secret recipe" can't be stolen.

The PSMCDR rules for their Certification process states the cam must be within 1% of factory .050 duration and have the correct factory cam lift per NHRA stock class rules.

Given those rules, any "legal" '68-71 383-440 HP 4/6BBL engine cam should measure...
Intake: 214 @ .050" +/- 1% = 212 / 216
Exhaust: 226 @ .050" +/- 1% = 224 / 228
Max Lift: .455"/.470" (NHRA "blueprinted" lift specs)
LSA: 115


Last edited by Brad Hawk; 01/28/08 07:13 PM.