Stock B cam journal dia?

1.560", although I have never seen one larger than 1.559". Most of the wear is on the center journal. Lobe lift came in 3 heights, the most common was .302", next was .315" and then .339", also a combination of the .315 and the .339. I recommend not re-grinding one with less than 1.556" on that center journal.
 
Contact Bill Stipe. His new cams are awsome, can even get them with oversized jouranls if your center cam bore is badly worn. You do have to line bore all of them, but taking the slop out is well worth it. Rod
 
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