Leaking oil out of bell housing I figure it is the rear main. Where's the best place to get one. Maybe part #. How big a job? Any help would be greatly appreciated.

 

Uh whats in it for a motor? Dodge 440? Or did you swap a Cummins into it?

 

come from factory with cummins and allison tranny

 

Best place to get one in directly from Cummins. Unfortunatly the tranny has to come out to install it. Not sure how good the torque convertors are on the Allison's but replacing the factory one in my '92 Dodge made a HUGE difference. Might want to look into that. I had the tranny pulled because I tore apart the flex plate after turning up the power. Might want to look at it as well pretty closely.