73 CJ5 4.0 head on a 258, HEI, Holley Projection w/ 4.56, Detroit lockers Narrowed D44 front and full float D44 rear T14 w/ D20 4 wheel discs, 38.5 Boggers
If you can't keep your hand on the Transfer Case and it's full of lube, you probally have a bearing that's ready to fail or if recently rebuilt, too much preload.