Any one interested in the oiling mods I did?

Duane said

Very nice. I am at a loss to explain why I see a counterbore similar to this on some factory blocks and not on others. I think this helps the rod oiling big time. May I ask how you determined which direction to elongate the slot. I went 1/4 inch by 1/2 long on my bearings as well for the same reason. Adequate bearing surface, although the load is lower on the top bearings.

Click to expand...

He slotted it so the oil timing is retarded from where Chrysler has it, and is making it closer to small block Chevrolet timing.

IOW’s, Chrylser has the oil timing too far advanced and gregcon has put it back where it should be by retarding it, or I guess you can say he also made the timing longer.

I did that and it helped, but over 8000ish it would still grab a bearing.