I bought one a Howard's camshafts for my 261 inline six cylinder through Patrick's and I did not receive a cam spec card with it and I would like to get the cam specs, so that I can degree the cam. The Patrick's model # and description from their catalog are M4F, 3/4 MILD, INTAKE 12/46, EXHAUST 46/12, LIFT 0.420. I do not understand what the INTAKE and EXHAUST numbers mean, can you explain it to me? I plan on using the Intake centerline method to degree this cam and I need the #1 intake lobe degree value at 0.050" to use this method. Does anyone have this information?


Jim