Quote:

Quote:

hi
the cam lobes are ground with a taper that the lifter face is always presssig cam rearward, this angle also causs the lifter to rotate !

roller cams have no taper and need a button !



Correct answer... If you use a roller cam you need a thrust button, otherwise the lobe taper takes care of thrust... But a thrust button won't hurt anything & many high performance builds run one...


he said 440 the solid bushed drive holds it stable and worms in, on rear drive cams that just mesh dizzy, cams are cut with larger taper .003 so tappet pressure drives them back. yes all v8 center cams drive in on cast cams. any time you increase valve spring pressure over 300lbs open and spin high rpms you want to use torrington thrust bearing timing set and button on cam front even with cast cams.solid roller billet steel cams have no taper on lobes

MOPAR OR NO CAR