Hydraulic lifters - IHRA crate motors

[CrateCamaro]

Originally Posted by Robert Swartz

Is the break in procedure still the same as the old days, we used to fire the motor and bring it up to about 2-2500 rpm and hold that for 10-20 minutes? This would allow the cam and lifters to take a set. I may be using a used camshaft, that's contingent on whether one of the people I've spoken with has an old spare for this combination. Otherwise, it will be a new cam.

ARP lube on the camshaft, Rotella T Oil and stock 200,000 mile valve springs (less than 45 lbs on the seat for sure) weather the cam is old or new and you will have smooth sailing for the break in. I run 6L of Valvoline Oil "Not for Street Use" oil that has zinc in it with one ACDelco engine oil supplement for bracket mode and never had trouble yet. Cam is ground on a pro core which might be helping things as well.