View Full Version : which rear end

12-01-2007, 12:12 PM
I am buying a Bighorn 3400rl and was wondering which rear end I need. I want the 1-ton Dodge Mega cab, diesel motor and the auto tranny. Do I need the 373 rear end or do I need to go with the 410 rear end. You guys know what you are talking about and I need your help. There is one truck in Ca. like I want but it has the 373, is that enough or do I order one with the 410. Thanks again.

12-01-2007, 03:41 PM
373 are higher gears. Which means a slightly slower take off, slightly slower on the hills, slightly better top end, slightly better fuel mileage.

410 slightly better starts from stop, same cruising feeling but lower top end, slightly better on hills, slightly worse fuel mileage towing and not towing.

I went with the 3.73 gears, never had a problem towing with them. I'm even looking at going to 3.55 to improve the non towing MPGs.

12-01-2007, 04:02 PM
Thank you and that is a beautiful cobra you built

12-01-2007, 11:43 PM
get the 3.73. u have way more hp the u will ever need. i have 240000 on my truck and haven't had a problem

driver311:) :)