Originally Posted by dvw
Originally Posted by Cab_Burge
There is no way in the world that I would run 1/2 or 3/4 groove main bearings in a 1000 HP drag motor, NO WAY tsk twocents
As far as what is supposedly written by a manufacturer about testing, maybe they don't want to make those bearings anymore due to the low volume we Mopar racers buy work twocents shruggy
I've put a lot of motors together, some of all brands, one Ford FE motor I refresh for a friend who loved and only owned and drove Fords had a Holman and Moody 427 side oiler motor that used a full groove on all the main journals on the crankshaft for oiling the rods full time, it also had cross drilled oil passage on all the mains also work


I don't agree. Clevite knows more about bearings than either of us. Though mine doesn't make 1000 hp, I'll bet it makes north of 900. Been running for 11 years, nearly 1000 passes. Regularly sees 7100-7200 with a 4.5 stroke. 3/4 groove have never been an issue.
Doug


Same here with mine. No issues. Plenty of street miles also.

1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.