Quote:
Originally Posted by carl hinkson
The Sportsman blocks are different then the Billet cap blocks, I would not use restrictors with roller lifters as the lifters bore clearance is what allows oil to the push rods, The oil holes are on the side of the lifter and not in the oil band. Restricting oil many burn up the push rods.
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I believe Dart recommends Drilled Restricter plugs in both front and rear .250 hole size. that should allow plenty of pressurized oil flow to the top end and yet adequate pressurized flow to the bottom end.