Duane said

I would think that opening up the passages in the block from the pump into the main galley would have more than adequate volume to feed the entire engine. The claimed advantage of the external line to feed the rockers is that the feed to the rockers is full time instead of the pulse oiling that the stock setup uses. My engine failure of 2 and 4 main proves that sending excessive volume to the rockers via the cam grooves takes the volume away from the main bearings and imho Sizilagys mod is valid for this reason.


In my picture you see 3 mods to the block.

1 The cross over tube fitting.

2 The plug in the head oiling passage. Underneath the plug is a hole into the main oil galley. I did this on both side so I don't need a 2nd oil line to feed the heads. Both are now full time oiling and the cam bearings block the oil feed from the cam to the heads.

3 The tapping of the oil passage at the deck surface. This is for future plugging for use of magnum heads

Click to expand...