(a) The straightness of the cam before grinding. (.03mm. maximum allowable bend)
(b) The indexing of the camshaft to ensure the correct cam timing is maintained.
(c) The cam design can accommodate the passing of the conrods between the lobes and this clearance must be maintained when using new billets or cams of a different model from core stock. (Ford Falcons and Holdens are examples) Ensure correct undercut between lobes.
(d) What effect the stock removal on a lobe will have on the rocker gear geometry or non- adjustable hydraulic tappets has to be considered.
(e) The hardness of the cam lobe after regrinding.