explain 4L80e yokes - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 01-03-2008, 10:20 AM
Member
 
Last photo:
Join Date: Jun 2004
Location: England - UK.
Posts: 101
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
explain 4L80e yokes

Teach me a little about 4l80e Yolks please.

I want to know the part number or where to get another yolk like the one I'm about to cut up here:
http://www.mez.co.uk/dcam/DSCF2121.JPG

I obtained that with a 4l80e and 1996 350 chevy engine from some big delivery van that was scrapped (therefore i never saw the vehicle and wouldn't know what it is anyway)

This is a bolt in yolk that has a recess inside it for an oil seal. It has 32 splines, well actually 31 spines and one missing. The machined part where the oil seal/bush runs is 3.150" long if that helps.


I cut it up and machine down the casting to get it looking like this:

The weld it to another shaft to get this:

Unfortunatley - it didn't weld true, so I need to make another one. (holding it in the lathe this time)
Bigger photos of it and the engine if it helps are ere: http://www.mez.co.uk/4l80e-1.html

I'm also looking at just getting a custom shaft made from scratch, why does the OEM shaft have one spline missing inside? - If making a new one - can I omit it?
Presumably if I had a new solid shaft made, I could also omit the oil seal as the new shaft would be dead-ended.

any assistance appreciated - I'm sure my long suffering 700r4 will be pleased when it can retire from duty.

And finally, I'm aim to eventually put about 600ft/lb's through that welded shaft - i fishtailed the weld - so hope it will hold. The current 700r4 is done the same way, with a welded shaft and has never broke.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-03-2008, 06:28 PM
Crosley's Avatar
Hotrodders.com Moderator
 
Last wiki edit: T-350 rebuild tech
Last journal entry: Morris update 9-28-2014
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 8,189
Wiki Edits: 1659

Thanks: 422
Thanked 108 Times in 104 Posts
there are 'yokes'... not yolks
__________________
Some people are like Slinkies... Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-03-2008, 08:01 PM
31 five window
 

Last journal entry: grill and rear end
Last photo:
Join Date: Oct 2007
Location: louisiana
Age: 57
Posts: 1,582
Wiki Edits: 0

Thanks: 1
Thanked 16 Times in 16 Posts
I am not sure but it looks like it is the same as a TH400. I will try to find out for sure. Are you building a 4 wheel drive vehicle?
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 01-03-2008, 08:59 PM
Crosley's Avatar
Hotrodders.com Moderator
 
Last wiki edit: T-350 rebuild tech
Last journal entry: Morris update 9-28-2014
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 8,189
Wiki Edits: 1659

Thanks: 422
Thanked 108 Times in 104 Posts
you will find that most the out put shafts on a 4L80e have threaded holes in them.

A t-400 yoke fits this output shaft. 32 spline count.

A holding fixture of some type and proper welding would provide a fairly straight part.

for what fitment is this shaft?

__________________
Some people are like Slinkies... Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 01-04-2008, 12:37 AM
Member
 
Last photo:
Join Date: Jun 2004
Location: England - UK.
Posts: 101
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Its to adapt the 4l80e to the Land Rover LT230 transfer box, which is in a Range Rover Classic - which is converted into a Dakar Kit car.

I intend to leave the shaft in the lathe when i weld it this time.

Any idea why the OEM yoke has 1 spline missing ? - lube?

Googling "yokes" is getting me better results - doh, no wonder!

thanks.
Eliot.
www.mez.co.uk

Last edited by eliotmansfield; 01-04-2008 at 12:42 AM.
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Practical tq limit of 4L80E curtis73 Transmission - Rearend 17 11-07-2007 03:06 AM
Jet 4l80e Tranny Chip Concern ALASKAN Transmission - Rearend 3 04-11-2006 09:02 PM
4L80E HD Transmission Gene Abbott Transmission - Rearend 0 10-31-2005 09:26 PM
Need some tranny help. 4l80e Bruce Wang Transmission - Rearend 3 09-19-2005 04:19 PM
First 4L80E build questions. bugsdad Transmission - Rearend 12 10-22-2004 08:40 PM


All times are GMT -6. The time now is 11:00 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.