Main Bearing differences

[lafrad]

I'm interested in finding the differences between the main bearings throughout the years...

What makes the early 4.2L bearings different than the recent 4.0L bearings?

Anyone have pictures?

[rradford9]

Position of the locating tangs. On the 4.2L and the '87-'90 4.0's the locating tangs are offset. In the '91+ 4.0L's the locating tangs are offset. I have a set of 4.2 mains that I didn't use. You want me to take a picture of them?

[lafrad]

that would be great!

[lafrad]

Doh!

Looks like we lost some momentum here.

360 Oiling:
I'm looking to get a set of bearings where the "Oiling Shell" has the same tang location as the "main cap" on a 1999 4.0L block. THis way, you can install 2 "oiling shells" for each main bearing and get oil pressure to the rod for 360* of crankshaft rotation. If it is something as easy as "buy a set of 4.2L main bearings and mix/match" I would LOVE it. 360 oiling means 360* of oil pressure on the rod, and 360* of oil slinging off each rod to throw at the camshaft.