I wouldn't use restrictors in a street engine with hydraulic lifters. The noise this causes is the sound of the lifters attempting to ruin your camshaft. And, installing a bigger oil pump to compensate does have some drawbacks. Although I am most definitely a member of the "more is better" club, the fact is there are very few engines that don't get more than enough oil from their regular, boring, stock oil pump. Unless your doing something out of the ordinary the only thing a high volume oil pump will do for your engine is consume a little more power and wear out the drive gear sooner. Good luck...Al English
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.