[Mikel]

Hello,
I'm piecing together the drivetrain in my '63 Jeep J300. I'm trying to figure out the driveshaft layout. The truck will have 3.08 gears and will not have tires larger than 31". This is for hauling medium loads, occasionally towing my 4400 lb old car.

- Early 2WD GM NV4500. Seems to have a 1310 U-joint.

- NP200 divorced transfer case from my M715: 1310's.

- Front Dodge Dana 60 axle: 1310.

- Rear Dodge Dana 60: 1410.

I'm hoping to get 150HP out of my rotary pump 4BT (about 400 lbs-ft). Will 1310's in the stub shaft (between transfer case and transmission) be durable? I'm tempted to keep 1310's all around, except 1410's in the rear driveshaft.
Any suggestions?
Thanks,
Mikel

 

[bcowanwheels]

mikel do yourself a favor and ge a np205

 

[Mikel]

Bob,
I'm confident that due to the gearing I won't have any noise or overheating problems.
Thanks,
Mikel

 

[CrewCab59]

The 1310 joints will be fine for what your doing,as well as your Np200

CrewCab59

 

[Mikel]

Btt

 

[DarylB]

1310's are fine in a non-off road 1/2 ton application - espeically in the jackshaft, which never bends. Most of the 1310's I've seen break have been at the outer axle shafts or in the CV joint on 4x4's - that's not to say you cant snap one from snatching/jerking the drivetrain.

 

[redhedbronco]

mikel do yourself a favor and ge a np205

What he said"ge a np205" And overbuild till pumpkins, then stock. Breaks where you want it to and easy to repair. CV's suck in the middle of nowhere.

 

[Ggg]

I agree with the 1310 will be fine in your application on a jack shaft since it does not see as much torque as a drive shaft joint does. If it is easy for you to switch now to 1410 series joints all around then do it for a piece of mind.

 

[tndonor]

Ive got 1310s in my driveline. So far my truck has towed a trailer and car (#6000 together). Ive put both cases in low and played pushing over small trees and winding the motor up to 2800 while doing it.

The occasional burnout

So far so good. I will eventually upgrade to 1350 and 1410 in the driveline but all is well thus far.

I agree that a u joint is a "fuse" and as long as you carry a spare or two.... no worries.

 

[Mikel]

Given that I have to build my driveline almost from scratch, I figure I might as well do it right the first time. 1410's seem to be way overkill, but I think 1350's would do nicely. I'm a believer in easily replaceable fuses. I'd rather blow a U-joint than an axleshaft... But with the D60/D70, the 4BT would have to work overtime


U-joint series Joint width (W) (inches) Cap diameter (D) (inches) Maximum Angle Continuous rating (lb-ft) Short Duration rating (lb-ft)
1310 3.219 1.062 30 130 800
1330 3.625 1.062 20 150 890
1350 3.625 1.188 20 210 1240
1410 4.188 1.188 37 250 1500