[WANTED] 727 yoke

[70dart340]

Hello FABO family. I pulled a bone head move today. I'm finally getting around to replacing my U joints on my '70 Swinger 340 with the 727 automatic. All went well until I tried to press out the U joint in the stock yoke. A 3/4" impact socket worked well on all the other joints, but is apparently just a little too big on the yoke. Yup, I busted the loop on the yoke big time. I don't think it's safe to weld up and reuse behind my healthy 408. I feel really stupid, but I deserve any jeers or sarcasm sent this way, You can't make me feel any dumber than I already do. Any FABO family members have one for sale? Or perhaps steer me in the right direction for another? Many thanks to all ahead of time. Paul.

 

[j061093409]

What spline is inside, coarse or fine? Large or small joint? 7260 or 7290

 

[70dart340]

Whatever came stock in 1970. I'm not sure, but I'll run out after dinner and get more pictures/information. Thanks for your time.

 

[Professor Fate]

727s should all be 30 spline. Difference would be in the U joint: 7260, 7290, or 1350.
Select by Category - Mopar A833 4-Speed Transmission & Component Specialists

 

[1500swinger]

I have an nos one.

 

[70dart340]

Appears to be 30 spline. I remember at the parts counter the new one that matched my old one was 7260.

 

[70dart340]

Wow, Professor Fate! How timely, accurate, and a place to buy one at a reasonable price! Kudos, Sir!

 

[Demonracer]

You didn't break that, that yoke was living on borrowed time. That looks like a stress fracture that was an accident waiting for the first time you put the hammer to it.

 

[Scody21]

I would check DrDiff and get the 1350 size slip and have the yolk on the drive shaft changed.

1350 Transmission Slip Yoke

Fully machined 4130 cr-mo 1350 slip yoke fits Mopar 727 and 904 automatics and 29/30 spline A833 4 speed transmissions.

www.doctordiff.com

 

[70dart340]

You didn't break that, that yoke was living on borrowed time. That looks like a stress fracture that was an accident waiting for the first time you put the hammer to it.

I thought about that, too. I can imagine the carnage the first time I stall the converter to 3500, and poke my 408 hard. Thanks for the insight.

 

[70dart340]

I would check DrDiff and get the 1350 size slip and have the yolk on the drive shaft changed.

1350 Transmission Slip Yoke

Fully machined 4130 cr-mo 1350 slip yoke fits Mopar 727 and 904 automatics and 29/30 spline A833 4 speed transmissions.

www.doctordiff.com

I will. Thanks for the insight. Paul.

 

[1500swinger]

Drive shaft loop is good insurance also.