Any one interested in the oiling mods I did?

gregcon said
The Sanborn mod I have seen (as above) does not feed only #1 as far as I can tell. It appears to be a second pressure feed line for the entire right side galley...all of the mains. A -6AN will not equal 3/8"....it's a lot closer to 5/16". I also see a lot of times when the fitting itself is the restriction even if you use a big hose.

I don't see any real difference in the R3 oiling from a stock block. If it's there, I'm not sure what it is (other than the lifter bores not breaking into the lifter galley). Actually....I wonder if a 59 deg R3 block would still break into the galley; I think the raised 48 degree angle is what allows the lifter bores to stay out of the galley.

AN hose is based on 16th of an inch sizes. -16 is 16/16" or 1" -8 is 8/16" or 1/2" and so on. -6 is 3/8" hose...the fitting IS slightly smaller.

The supply line is fed into the right lifter gallery directly above the #1 main oil feed. Direct enough in my book.

The cross over line is supplying oil from the right lifter gallery to the left lifter gallery. Since the left gallery is blocked at the front of the block the left gallery is dry if you don't use a x-over. Works fine for solid lifters... splash will supply enough oil especially in a race motor. Juice lifter will likely need some oil to work hence the x-over.

I have never owned an R3 but IIRC Sanborn stated you won't need the direct feed to the #1 main if you have an R3 block but I may be wrong. Here's his quote..."Remember we said earlier that we fed the oil(#12 line) to a remote filter? At the filter we split the return to the block. One # 12 line goes back to the rear of the block AND a #8 feed line goes to the front of the block. "X" and "R" blocks have provisions to feed oil from both ends. And for high RPM applications we believe it is necessary."

I think Charles fix is a pretty good way of doing things... he spun these engines to 8500 rpm on dirt tracks... seemed to work pretty good.