Fabrication Custom fabrication ideas and concepts ranging from body kits, interior work, driveline tech, and much more.

home made torque arm mount

Thread Tools
 
Search this Thread
 
Old Jul 22, 2009 | 07:04 PM
  #1  
jasonrski's Avatar
Thread Starter
Junior Member
 
Joined: Sep 2008
Posts: 5
Likes: 0
home made torque arm mount

ive searched for hours and cant find much, so here it is.

i keep breaking trans mounts big surprise right, if its from the torque arm yanking up on it then, what if i was to fab up a solid mount for the torque arm? take the load off the tail shaft, i think if i just solid mount the trans it will break the tail shaft.
dosent seem too hard to do rather than spend big bucks on a kit from summit
has anyone done this? if so do you have pics?
any input would be greatly appreciated i will post pics if i build mine
Reply
Old Jul 22, 2009 | 07:49 PM
  #2  
//<86TA>\\'s Avatar
Supreme Member
15 Year Member
iTrader: (15)
 
Joined: Aug 2006
Posts: 12,805
Likes: 107
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: home made torque arm mount

pick up a poly trans mount, it will hold up a lot better than stock.

if the car has more power than stock and that why things are breaking, it would be a good idea to relocate the arm from the trans.

one of these
http://www.umiperformance.com/catalo...ex&cPath=6_178
or these
http://www.umiperformance.com/catalo...dex&cPath=6_93
would be a good idea if its a power issue.

or make something like it if you have the ability
Reply
Old Jul 22, 2009 | 09:07 PM
  #3  
AlkyIROC's Avatar
Moderator
25 Year Member
Liked
 
Joined: Jul 1999
Posts: 17,265
Likes: 168
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: home made torque arm mount

You can fabricate something to move the torque arm off the transmission but the factory torque arm is flimsy and flexes a lot anyway and isn't the best choice to use. That's why a lot of TGO members have converted to an aftermarket torque arm. They're adjustable for the pinion angle and the front mount is moved onto a new tranny crossmember.

You can't "solid" mount the front of the torque arm. It needs to move forward and backwards as the diff rotates through it's arc. If the front mount is solid, the diff will bind. All the good aftermarket torque arms have some sort of floating front mount. The early Spohn design www.spohn.net was a simple slip joint. He now uses a shackle.
Reply
Old Jul 23, 2009 | 06:28 AM
  #4  
jasonrski's Avatar
Thread Starter
Junior Member
 
Joined: Sep 2008
Posts: 5
Likes: 0
Re: home made torque arm mount

wow cant believe ive been a member for almost a year and this is my first post.
i know about the weak arm but im laid off so i have to do this cheaply for now. ive got some plate and tubing i should be able to come up with something. might just beef up the arm some while im there, thanks for the help folks
Reply
Old Jul 23, 2009 | 03:06 PM
  #5  
jasonrski's Avatar
Thread Starter
Junior Member
 
Joined: Sep 2008
Posts: 5
Likes: 0
Re: home made torque arm mount

well here it is dont hate its a first attempt and i have another cross member it seems pretty good, it did move the pinion angle down a bit but no adverse effects





sorry crappy cell phone pics

Last edited by jasonrski; Jul 23, 2009 at 03:10 PM.
Reply
Old Jul 29, 2009 | 10:31 AM
  #6  
Tricked-Out-Toy's Avatar
Senior Member
iTrader: (1)
 
Joined: Jun 2001
Posts: 656
Likes: 0
From: Nashville, TN
Car: 91 Z28
Engine: Lt1
Transmission: T56
Axle/Gears: 3.70 auburn pro 9"
Re: home made torque arm mount

Sorry bud, but thats full of fail. The stamped stock cross memeber has almost no torsional rigidity.. itll twist that up in a hurry. Do no run that! start from scratch with some square tubing. take a good look at some of the manufactures like BMR and Spohn.
Reply
Old Jul 29, 2009 | 10:38 AM
  #7  
Tricked-Out-Toy's Avatar
Senior Member
iTrader: (1)
 
Joined: Jun 2001
Posts: 656
Likes: 0
From: Nashville, TN
Car: 91 Z28
Engine: Lt1
Transmission: T56
Axle/Gears: 3.70 auburn pro 9"
Re: home made torque arm mount

double post...
Reply
Old Jul 29, 2009 | 11:44 AM
  #8  
jg04222's Avatar
Member
 
Joined: Sep 2007
Posts: 169
Likes: 0
From: Baltimore
Car: '82 Z-28
Engine: 355
Transmission: TH-400, 8" ATI MRT
Axle/Gears: Moser 9", 4.56's
Re: home made torque arm mount

i would use that one you have to make sure it will work, then take that spare cross member and reinforce the sh*t out of it; fill in all of the holes with some 1/8" plate...or you could make a new one out of some steel tubing and just use your idea for measurements (i would lean toward this option). just use your head and try to make it as strong as possible so you dont have more problems. if you can post up some better pics; it might help us see what you've got going on and maybe we can provide some suggestions.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Terrell351
Engine/Drivetrain/Suspension Parts for Sale
5
Jun 13, 2021 01:13 PM
Nervous2
LSX and LTX Parts
8
Mar 10, 2016 09:49 PM
IROCZ1989
North East Region
7
Jan 24, 2016 03:55 PM
sweet_87_iroc
Camaros for Sale
5
Sep 25, 2015 10:01 PM




All times are GMT -5. The time now is 10:31 AM.