So I believe my rear end is going out on my dakota. Its the 9 1/4 non posi with 3.55 gears. I'm trying to find out what is an affordable option and what rear ends will fit my truck. I would like to go to a limited slip rear end. I need to stay with the 3.55 gears as my truck is 4wd and I use it on a daily basis. It makes a whining sound when driving down the road then makes a growling sound when coasting or engine breaking.

 

Sounds like a bad pinion bearing. If it is, your best option would be to just replace the bearings, instead of buying a whole rear end. Then, you could also install an aftermarket limited-slip at the same time, if you want.

Looks like about the least expensive option is the OE Trac-Loc.

 

What's your thoughts on the chrysler sure grip rear ends? I've got one found with 48,000 miles for 210. Worth it or should I just do it right the first time and rebuild mine.

 

I'm not really familiar with the Sure Grip. I have seen some broken Trac-Locs (mostly with bad clutches, but also some broken spider gears), but I'm not sure how the Sure Grip is different. Sounds like a pretty screaming deal you found, though. You can't even come close to buying a new posi carrier for that, and the labor is probably easier to change the whole rear end.

 

heres a spotters guide. its very good. dont NEVER NEVER NEVER us a 7 1/4 rear end.

http://www.crankshaftcoalition.com/w...er's_guide

 

Ive got the same issue with my 01 dak 4.7 2wd... Im rebuilding mine. I can get the rebuild kit for under $100 and a machine shop will do the pressing and cleaning for me for $50... I just have to pull it and deliver... which is no big deal. (perks to working for Midas automotive....) all should take about 3 hours...