just wondering if anyone has any failures to report from using the small joints and was it the cross that failed or the yoke? i have them in my bee and it's one more added expense for a limited budget, but i just got a 500" stroker kit and wondering what peoples thoughts are on a car that sees some drag strip with drag radials? thanks again moparts.

Weak, I snapped mine at 11.70's. 340, and a 904 with slicks. It was the cross that broke. Switched to the 7290, solids. And when it broke, it bent the drive shaft.

I used one in my Duster(3440lbs, 10.34 ET at 128.6)It was a one for a four wheel drive front end, solid and heat treated. I had broken the front yoke, 7290 size and spread open a new Spicer brand 7260 pinion yoke, I switch to a billet steel 7260 pinion yoke from Randys ring and pinion. Those parts held up, the 8 3/4 housing ended up bending and breaking the right side ladder bar brackets off of the rear end housing and twisting the housing beyond repair. I put a Dana 60 in the car with a 1330 pinion yoke and switch to adapter 1330 to the 7260 rear U joint to mate it to the driveshaft. I couldn't find a new rear driveshaft yoke in my size, 3.25 diameter so the adapter U joint was the only option other than replacing the entire driveshaft BTW, my motor is 518 C.I. pump gas low deck, the car runs on 315x60x15 M/T ET Street Radials

I'd say you're OK if you use the solid body ones, or the NEAPCO brand ones that have the zerk in one of the caps instead of in the cross.

Broke the yoke and u-joint on my duster,switched to 1350 and billet pinion yoke..no more breakage

I have them on my challenger for at least 7 years now with a 440 under the hood, so far so good. I won't run slicks on the car. It has a best time of 12.07 at 116 with 275 x 15 bfg street tires. I don't take it to the track any more so i will leave them on for now. I have the big solid spicer u-joints on the car with street legal slicks.

I run the solid joint in the front of my driveshaft no one had a 1350 yoke in stock when I had my driveshaft made ive been 1.29 60 ft at 9.43 @140 plus leaving of a transbrake

I'm using Spicer solid 7260 u-joints front & back on a mild steel driveshaft. Car weighs 0ver 3,540 and pulls the wheels every run. Best 60' has been 1.47 and has run 11.31.(360/904 footbrake)

If using joints with a grease fitting in the corner, intall the u-joint so that corner is in compression. I didn't have a problem with those before while running slower, but I did find the OEM cast pinion yokes tend to spread eventually. When they do, it beats the u-joint out. I've been running a steel billet yoke and the Spicer solids for several years now with no problems.

Driveshaft straightness, balance and angles are also very important to longer u-joint life. I never cared for much rear suspension separation, which can also cause problems.

I've made countless 1.37-1.39 sixty foots with the NAPA brand 7260's for years (the ones with the grease fitting) at 3500lbs with driver.

I guest that I am lucky been running them in the car since I built it and not a problem.

I ran 10.o's for awhile with a 7260-7290 conversion joint. I finally upgraded the 8 3/4 to a dana...but never had single problem with the joint or the 741 4.56 spool pumpkin.

3300-3400 lbs with a high 1.3x's short times.