With a hyd lifter cam I can see no need for the grooved cam journals. In a hyd cam sb unless there are some rare factors I do not use a hv oil pump either. Solid roller builds it changes things a bit. Have run 6.20's(1/8 mile) with crappy hyd roller lifters(stock) and low volume pumps with no issues for many passes and street miles. No quench either. LOL

Last edited by J. Hammer; 04/03/17 07:19 AM.