TheAMCForum.com Homepage
Forum Home Forum Home > The Garage > Transmission & Drivetrain
  New Posts New Posts RSS Feed - Need a Big Nut Yoke, broke it
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Click for TheAMCForum Rules / Click for PDF version of Forum Rules
Your donations help keep this valuable resource free and growing. Thank you.

Need a Big Nut Yoke, broke it

 Post Reply Post Reply Page  12>
Author
Message
whatisthat View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: Sep/14/2009
Location: Denver CO area
Status: Offline
Points: 51
Post Options Post Options   Thanks (0) Thanks(0)   Quote whatisthat Quote  Post ReplyReply Direct Link To This Post Topic: Need a Big Nut Yoke, broke it
    Posted: Jan/10/2021 at 3:40am
Well somehow I broke the “Big Nut” Yoke in half on the rear pinion of my ‘65 American 440H. All of those 195.6 cubes of power through that slush box auto was too much for it haha!
Anyhow if anyone has one for sale or knows where I can buy one it would be greatly appreciated! Can’t stand not driving her!
Thanks!
65 American 440H
1970 AMX 390 4-SPD
1987 Shelby CSX, 1992 Spirit R/T, 2005 Magnum R/T, Etc
Back to Top
401MATCOUPE View Drop Down
AMC Addicted
AMC Addicted


Joined: May/20/2010
Location: Salisbury, MD
Status: Offline
Points: 5251
Post Options Post Options   Thanks (0) Thanks(0)   Quote 401MATCOUPE Quote  Post ReplyReply Direct Link To This Post Posted: Jan/10/2021 at 6:37am
I have a bunch of NOS yokes with no part numbers, can you send me a picture so I can try to match up what you have???   Price is uber reasonable.....
Ross K. Peterson
68X,GoPac,343,AT,52A(1stCar)
68X,GoPac,390,4sp,52A
69X,GoPac,390,4sp,64A
70X,GoPac,390,4sp,87A,8
70X,GoPac,390,4sp,BBO,8
70 Jav SST,390,AT,BSO
74MatX,401,AT,Prototype
74MatX,401,AT
Back to Top
gunnarcove View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: Jan/07/2009
Location: terre haute,in
Status: Offline
Points: 177
Post Options Post Options   Thanks (0) Thanks(0)   Quote gunnarcove Quote  Post ReplyReply Direct Link To This Post Posted: Jan/10/2021 at 10:37am
sent you pm
amo #9922
Back to Top
tomj View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jan/27/2010
Location: los angeles
Status: Offline
Points: 5287
Post Options Post Options   Thanks (0) Thanks(0)   Quote tomj Quote  Post ReplyReply Direct Link To This Post Posted: Jan/10/2021 at 10:58pm
Wow. Yep, must be your heavy foot on that monster motor! eh?

I nad an axle shaft snap in half on a 1958 American, flat head automatic. When my mother borrowed to to buy groceries (it was ~ 1977). Failed when she put it into D in the parking lot. (Doing hole shots I assume.) After replacement, it had a long time flaw and just decided to part.

Can you post pics of the failure? Do you know how/why it failed? It's interesting, but you have my sympathy, it's probably scarce.

I may have one. The only catch is that I literally moved all my old parts into a large pile as a shed is being built where the stuff was piled. If it's not "on top" I will have to wait to re-move the pile to find it. I'm fairly sure I have a good-used.


1961 roadster american, 195.6 OHV, T5
1968 american, 199ci, T14
AMC pages: http://www.sr-ix.com/AMC/

Back to Top
whatisthat View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: Sep/14/2009
Location: Denver CO area
Status: Offline
Points: 51
Post Options Post Options   Thanks (0) Thanks(0)   Quote whatisthat Quote  Post ReplyReply Direct Link To This Post Posted: Jan/11/2021 at 12:10am
  1. Here are the damage pics. My guess is the u-joints being frozen are the main cause. That & being able to drive it at any ride height because of the air bag system, this bound it up & it snapped. Live & learn
65 American 440H
1970 AMX 390 4-SPD
1987 Shelby CSX, 1992 Spirit R/T, 2005 Magnum R/T, Etc
Back to Top
401MATCOUPE View Drop Down
AMC Addicted
AMC Addicted


Joined: May/20/2010
Location: Salisbury, MD
Status: Offline
Points: 5251
Post Options Post Options   Thanks (0) Thanks(0)   Quote 401MATCOUPE Quote  Post ReplyReply Direct Link To This Post Posted: Jan/11/2021 at 6:09am
I have the cap with the female thread, looking for the U-Yoke......
Ross K. Peterson
68X,GoPac,343,AT,52A(1stCar)
68X,GoPac,390,4sp,52A
69X,GoPac,390,4sp,64A
70X,GoPac,390,4sp,87A,8
70X,GoPac,390,4sp,BBO,8
70 Jav SST,390,AT,BSO
74MatX,401,AT,Prototype
74MatX,401,AT
Back to Top
whatisthat View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: Sep/14/2009
Location: Denver CO area
Status: Offline
Points: 51
Post Options Post Options   Thanks (0) Thanks(0)   Quote whatisthat Quote  Post ReplyReply Direct Link To This Post Posted: Jan/13/2021 at 5:26pm
Hi 401, any luck finding the Yoke?
65 American 440H
1970 AMX 390 4-SPD
1987 Shelby CSX, 1992 Spirit R/T, 2005 Magnum R/T, Etc
Back to Top
401MATCOUPE View Drop Down
AMC Addicted
AMC Addicted


Joined: May/20/2010
Location: Salisbury, MD
Status: Offline
Points: 5251
Post Options Post Options   Thanks (0) Thanks(0)   Quote 401MATCOUPE Quote  Post ReplyReply Direct Link To This Post Posted: Jan/13/2021 at 7:19pm
I just got through 4 boxes of yokes and nothing for Big nut but the nut itself with the cone on it if you need that too.....sorry not a one stop shop!!
Ross K. Peterson
68X,GoPac,343,AT,52A(1stCar)
68X,GoPac,390,4sp,52A
69X,GoPac,390,4sp,64A
70X,GoPac,390,4sp,87A,8
70X,GoPac,390,4sp,BBO,8
70 Jav SST,390,AT,BSO
74MatX,401,AT,Prototype
74MatX,401,AT
Back to Top
tomj View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jan/27/2010
Location: los angeles
Status: Offline
Points: 5287
Post Options Post Options   Thanks (0) Thanks(0)   Quote tomj Quote  Post ReplyReply Direct Link To This Post Posted: Jan/13/2021 at 11:32pm
OUCH! Wow, that's some bad pinion angle to do that sort of damage. YOu can get 190 ft/lbs of torque out of that little motor, and and crazy low RPMs. It falls over flat at 4000 rpm, stock, but torque, not a problem!

The whole driveline is not that rugged or heavy duty. It was designed in and used on cars in the 60 to 80 hp days. 125 HP and 200 ft/lbs, as modest as that seems now, regularly does in T96 transmissions in modern usage patterns. These are very old cars, they are not modern at all. THey're Nashcans, not AMCs really.

My iron pile is compromised by construction, but I will see if I can find it in the top layers. It iwll be a couple weeks before I get to (oh fun) re-stack it all in it's new home.

1961 roadster american, 195.6 OHV, T5
1968 american, 199ci, T14
AMC pages: http://www.sr-ix.com/AMC/

Back to Top
Ken Doyle View Drop Down
AMC Nut
AMC Nut


Joined: Jun/19/2010
Location: Haledon NJ
Status: Offline
Points: 260
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken Doyle Quote  Post ReplyReply Direct Link To This Post Posted: Jan/14/2021 at 8:12am
I broke a few of those years ago.  Then I learned that the yoke must be fastened to the spline, with the correct measurement from the housing.  At the time, the yoke was still available at the AMC dealer for $95.  I believe I used a product called "Loctite for splines" or something similar.
Back to Top
 Post Reply Post Reply Page  12>
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.03
Copyright ©2001-2019 Web Wiz Ltd.

This page was generated in 0.219 seconds.
All content of this site Copyright © 2018 TheAMCForum unless otherwise noted, all rights reserved.
PROBLEMS LOGGING IN or REGISTERING:
If you have problems logging in or registering, then please contact a Moderator or