Billet cams and lifter supply

[Rory McNeil]

Originally Posted by Stan Weiss

If the EPA is the problem than making the parts outside the USA would fix it.


How many vehicles today run OHC on bucket setups? Which is nothing more then the cam against a flat tappet



Stan

Totally different situation. The OHC engines with buckets have no rocker arms, lifters or pushrods, so the valve springs are generally much less tension, since the weight of the valve train is so much lighter. Even more so with a 4 valve head, since the valves are considerably smaller, as are the spring diameters and retainers. Also, the buckets do not need to rotate like a flat tappet cam, and the cam lobes are not ground on a taper, to promote rotation.