Quote:

blocking off the oil to the driver's side is just a way to direct the oil pressure back to the main bearings rather than have it leak away around 8 lifters that don't need it.

For high perf street motors I usually block off the driver gallery but then drill a small hole (0.090) or so in the plug so that oil still flows, but at a reduced rate. I just haven't gotten comfortable with the idea of completely blocking off the lifter gallery on a street car.



do you have a good source for the plugs to do that, i have about 5 left and none to be found in south florida at all??? know of a place where i can order them?


Quote:

In addition, blocking off the lifter galleys helps if you bend a push rod or a rocker adjuster backs off and a lifter jumps out, your oil pressure will not drop to zero.



that's if your luck enough for it to happen on that side of the block, LOL.