Originally Posted by hink
Look at the lifter and if the oil hole on the side of the lifter is in the oil band you could run the restrictors but if the oil feed hole is on the side of the lifter it will use the oil clearance in the lifter bore to feed with and I would not use restrictors there as its already being restricted!!
Good information /\ /\ /\
I looked my Howards Pro-Max lifters over, and they appear to oil through the center of the lifter. And should not restrict oil flow.
I talked with Dart again today on the restrictor issue with my Little-M Sportsman block. They thought my idea about observing the top oiling while priming was a good idea and gave me some suggestions on what action to take if needed.
1. First check to see how well it is oiling on the top with the restrictors inplace.
2. If it isn't oiling enough, removed the restrictors and recheck.
3. Then, if it is oiling too much at the top with the restrictors remove, get 1/4" NPT plugs (inner oil plug) and drill 1/8" holes in the plugs for minimum oil restriction. FYI the outer block oil plug is 3/8" and the inner 1/4".
Warren