Originally Posted By DoctorDiff
You don't have to measure anything.

If the rear main bearing journal is almost the same diameter as the rear main seal journal, you have an RB crank.

If the main bearing journal is noticeably smaller, you have a B crank.

Like homer would say,, Doh,,,,!!!!!


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky