Recent content by 1ToughDuster

Pics of the 4.11. Let me know if you're interested in the 3.23

I have a couple of third members that I'm willing to part with. One is a 3.23 open 742 case and the other is a 4.11 open 489 case. The 3.23 is in good condition, the 4.11 needs to be rebuilt. No broken or pitting on the gears. $400 for the 3.23, $300 for the 4.11. If you're interested let me...

Want to find some in GA or AL that can rebuild a 741 center section.

I have an 8 3/4 3rd member that I'm willing to part with. It is the highly desirable 489 case, with 3.23 gears. I was waiting to put it into my Duster but I'm just gonna sell it and go with 3.92 gears. The price is $450 and includes free shipping to the lower 48. Contact me if you want it.

I pulled a 8.25 sure grip 3.92 geared 29 spline rear end from a 2001 Durango R/T 4x4. It'll be going under my 400hp 74 Duster. Has anyone done this type of conversion before and what shops East of the Mississippi are best for narrowing the rear end and axles?

A trans cooler was put on the car years ago when I built it. The car is built to run.

I'll see how the car runs with the 3.92s before I go for nitrous. If it doesn't run right for me I'll go with a 3.55. Pull a Part here is full of 3.55 rear ends under Dakotas and Jeep Libertys. I may not need nitrous after all.

Well, I'm going with 3.92 gears. I pulled a 3.92 sure grip rear end out of an '01 Durango 5.9 R/T from Pull a Part for $128. It's a 29 spline 8.25 that's not leaking and looks pretty clean. Sure, I'll have to have it narrowed, but after an LPW cover and extra strength alloy axles, it should...

Okay, I see why everyone is recommending the lower gears. Thanks for everyone's input.

The engine and trans are already built and it's unlikely that I'll be going back inside of either one of them unless something breaks. As far as the engine, the cam manufacturers recommend specific gear ratios from 3.55 up through 3.91 if I remember correctly. The nitrous is being added...

Have either of you ran nitrous on 3.73, 3.91,or 4.11 geared cars? From what I've researched, higher gears (in this case 3.55) do better with nitrous, than really low gears.

I'm at odds with what rear end gear to run in my Duster. The engine is a 360 with a 268XE cam with aluminum eddy RPM heads, aluminum RPM intake, 750 Holley Double Pumper, and produces about 400hp on the motor. Rear end is a built 8 1/4. A 100 shot of NOS is also in the plan. The trans is a...

no thank you.

No thank you.