THIS IS AS BIG OF CAM AS WILL FIT IN THE OLD TYPE HEADS IT HAS SOME LIFT OVER THE STOCK CAM, BUT TONS OF DURATION * THIS IS THE MOST RADICAL CAM MADE FOR THE OLD TYPE HONDA HEADS * THIS CAM HAS 6MM OF LIFT. * Camshaft Calculations - Lobe Center / Duration AT .050" VALVE LASH THE VALVE LASH IS MORE FOR CARS AND REALLY DON'T GIVE A TRUE CYCLE READING,, BUT THATS JUST HOW IT'S DONE. THE LASH IS ONLY .0025" ON THE BIKES COMPAIRED TO .050" ??? * THIS CAM has an Overlap of 40.00 degrees and has an Intake Duration of 255.00 degrees. The Exhaust Duration is 265.00 degrees. The Inlet Cam has an Installed Centerline of 102.50 degrees ATDC. The exhaust cam has an Installed Centerline of 117.50 degrees BTDC. * LIFT IS 6MM, so YOU SHOULD PROBABLY ASLO GET THE 200149 VALVE SPRINGS LISTED BELOW 200138 (S1437) @ e HEAVY_DUTY VALVE_SPRINGS WITH_WIDER COIL_SPACING FOR_HI_LIFT_CAMS IN_50_70_HEADS (GREAT_STOCK_REPLACMENT) (S1129) ALSO WORK TO REPLACE STOCK 50 AND 70 STOCK SPRINGS AND ADD SOME MORE TENSION S1129