T-150/D20 to T-176/D300 in a CJ5

[Stodg73]

Which combination is better and why?

I have the opportunity to get a T-176 /Dana 300 very inexpensively(****) that has no problems, is it worth the time and effort to change everything out and then remake/purchase the drive shafts?

 

[Torxhead]

I would say it depends on the type of driving you do, If you get into the rocks, slowing down helps a lot plus getting more torque on the ground with better control. I have gone places where I would like to go even slower.

 

[hole]

The T-176 is just over 3 inches longer than the T-150 , and will change your driveshaft lengths, affecting rear driveshaft angle. The T-150 /Dana 20 has a pretty good reputation, and the T-176 /Dana 300 will give you lower gearing but will definitely have you reworking driveshafts and possibly monkeying with rear pinon angle as well.

 

[Posi]

Which combination is better and why?

T-176 /Dana 300 better crawl ratio (33.1 with stock axle gears), extra Transmission gear (4th)

is it worth the time and effort to change everything out and then remake/purchase the drive shafts?

The extra Transmission gear and 11.1 crawl improvement wouldn't be worth my time to swap out a good running T-150 /Dana 20 IMO. However, a T-18 /300 would be a different story.