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DOH! That makes perfect sense, Keith!!
So, what's the difference between the
3904362 and the
12364057 cam?
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That's a good question---I never thought there was a difference ,but I did some checking and GM PERFORMANCE PARTS book#2 also lists the L88 CAM(using this as a reference) without valve lash added--ex.I.536(LIFT)(GM listed)+.024(VALVE LASH)=.580 LIFT=(Cranes blurprinted cam for L88)--------

AH HUMMMMM--536+24=560--I really shouldn't make posts after a late night out---Now --Where did I park my car??-----