another question... if using the circle or triangle... if they are within 5 degree's or so wouldn't the cam be on the base circle for this period of revolution and show no lift... and shouldn't either be able to be used for setting valve lash..?



Old Truck addict
1950 chevy 1 ton napco
1956 gmc 1 ton dually napco
1954 chevy 3/4 ton napco
1957 gmc civil defense napco panel