detroit trutrac feedback wanted
03-16-2005, 04:06 PM
#1
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2003
Location: minneapolis,mn
Posts: 1,104
Likes: 0
Received 0 Likes
on
0 Posts
detroit trutrac feedback wanted Has any used the dertoit trutrac differential in a 12bolt or 9" .I'd relly like to know how these work and if they are tough enough for a m6 application.This
is the diffy that is similar to a torsen but with an extra pinion for increased
torque capacity.
is the diffy that is similar to a torsen but with an extra pinion for increased
torque capacity.
03-16-2005, 07:27 PM
#2
TECH Apprentice
iTrader: (4)
Join Date: Mar 2004
Location: Crane, Texas
Posts: 350
Likes: 0
Received 0 Likes
on
0 Posts
I just sat my car on the ground this evening with a truetrac in my 12 bolt. It looks to be really stout compared to torsen. The worm gears are quite a bit larger. I gotta get the DS shortened tomorrow and i'll start breaking the rear in. I'll let you know when i get to driving it. The people at Moser said it should be stronger than the Eaton.
03-16-2005, 07:30 PM
#3
12 Second Club
iTrader: (15)
Join Date: Jun 2004
Location: Rhode Island
Posts: 1,479
Likes: 0
Received 0 Likes
on
0 Posts
I have one in my 8.8 and I love that **** wicked positive engagement.
opps sorry I have a protrac different unit.
opps sorry I have a protrac different unit.
Last edited by ace68; 03-17-2005 at 08:37 AM.
03-17-2005, 03:14 AM
#4
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2003
Location: minneapolis,mn
Posts: 1,104
Likes: 0
Received 0 Likes
on
0 Posts
If this thing can handle the shock load of a m6 it should be the ideal street strip differential,and allow synthetic rear end lube to boot for extended ring and pinion life.
It should have none of the locker issues,or clutch pack/spyder gear problems of the eaton.To say nothing of seamless torque split and queitness of opperation.Now if they would release the 4series carrier for 33 spline we would be all set.
It should have none of the locker issues,or clutch pack/spyder gear problems of the eaton.To say nothing of seamless torque split and queitness of opperation.Now if they would release the 4series carrier for 33 spline we would be all set.
03-17-2005, 08:01 AM
#5
Banned
iTrader: (1)
Join Date: Aug 2004
Location: Bartlett, Ill
Posts: 282
Likes: 0
Received 0 Likes
on
0 Posts
What are the chances of a posi holding up in a 9" though? I dont even put slicks on my car or dump at high rpms and I am putting a spool in because I dont feel like having to rebuild the friggin things.
CMC
CMC
03-17-2005, 11:29 AM
#6
Staging Lane
Join Date: Dec 2001
Location: oregon
Posts: 85
Likes: 0
Received 0 Likes
on
0 Posts
where did you order the 12 bolt and True-trac from? did you get it as a package, set together?
What other specs of your 12 bolt? anything that you have to keep in mind when you get the true-trac in it?
I'm starting to contemplate getting a strange 12 bolt with 3.73's and true-trac diff... to bulletproof my drivetrain for street driving, and some autox and open track days.. (preparing for future hp upgrades)
What other specs of your 12 bolt? anything that you have to keep in mind when you get the true-trac in it?
I'm starting to contemplate getting a strange 12 bolt with 3.73's and true-trac diff... to bulletproof my drivetrain for street driving, and some autox and open track days.. (preparing for future hp upgrades)
Originally Posted by WickEdSix98
I just sat my car on the ground this evening with a truetrac in my 12 bolt. It looks to be really stout compared to torsen. The worm gears are quite a bit larger. I gotta get the DS shortened tomorrow and i'll start breaking the rear in. I'll let you know when i get to driving it. The people at Moser said it should be stronger than the Eaton.
03-20-2005, 06:27 PM
#7
TECH Apprentice
iTrader: (4)
Join Date: Mar 2004
Location: Crane, Texas
Posts: 350
Likes: 0
Received 0 Likes
on
0 Posts
I finally got to drive and race the car this weekend. The truetrac is nice, really quiet on turns and doesnt feel any different than the torsen did in my stock rear. The 12 bolt is definately noisier than the 10 bolt but its not un-bearable. I bought my housing used and bought all the insides straight from Moser. (33-spline, truetrac, 4.10's) They said the truetrac would be stronger than the Eaton so I bought it instead. Its so nice going to the track and not worrying about the rear end! 
Trending Topics
03-20-2005, 10:24 PM
#8
TECH Enthusiast
iTrader: (8)
Join Date: Feb 2004
Location: In my garage
Posts: 579
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by ynneK
where did you order the 12 bolt and True-trac from? did you get it as a package, set together?
What other specs of your 12 bolt? anything that you have to keep in mind when you get the true-trac in it?
I'm starting to contemplate getting a strange 12 bolt with 3.73's and true-trac diff... to bulletproof my drivetrain for street driving, and some autox and open track days.. (preparing for future hp upgrades)
What other specs of your 12 bolt? anything that you have to keep in mind when you get the true-trac in it?
I'm starting to contemplate getting a strange 12 bolt with 3.73's and true-trac diff... to bulletproof my drivetrain for street driving, and some autox and open track days.. (preparing for future hp upgrades)
03-23-2005, 11:01 AM
#9
On The Tree
iTrader: (10)
Join Date: Jun 2004
Location: Upstate SC
Posts: 172
Likes: 0
Received 0 Likes
on
0 Posts
I've got a Truetrac in my Cutlass. It's a 8.5 rear, but as far as how it does, great is my opinion. The car is my daily driver, and under normal conditions you never know the diff is there until you need it. I drag the car on the weekends (3.73 gear with an M6 trans) and I beat the hell out of it. (5000rpm clutch dumps on 275/50/16 M/T drag radials dead hooking) It's been together nearly a year now with zero problems. I'll be buying another one soon for my S-15.
03-29-2005, 03:59 AM
#11
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2003
Location: minneapolis,mn
Posts: 1,104
Likes: 0
Received 0 Likes
on
0 Posts
Well I did a little more digging and they are suppose to be good for 1000 ft lbs of tq,
The best price I found was randy's ring and pinion.
The best price I found was randy's ring and pinion.
04-10-2005, 06:52 PM
#13
TECH Senior Member
iTrader: (1)
Join Date: Apr 2005
Location: Vancouver,[KITSILANO].B.C. Canada *WestCoast*
Posts: 8,810
Likes: 0
Received 0 Likes
on
0 Posts
I have had mine for 60,000 miles and hardly any sign of wear,no whine,and no sign of problems-had it looked at 3,000 miles ago---stock rear,3:73's--great stuff--A place here called 'REAR ENDS ONLY" LTD.,name speaks for itself,his dad started the company over 30 years ago and was a racer,he's also a racer[Drag and Oval],say's in his business he's never seen unit's that take abuse like 'DETROIT PRODUCTS' do!!!!! 
...
... Last edited by NHRAMAN; 03-10-2006 at 03:57 PM.
05-22-2005, 06:46 AM
#17
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2003
Location: minneapolis,mn
Posts: 1,104
Likes: 0
Received 0 Likes
on
0 Posts
Looks like the 4 series carrier is going to happen,part#914A575 detroit trutrac for 4.10
and up ratio 33 spline axles with a 45 degree pressure angle.
and up ratio 33 spline axles with a 45 degree pressure angle.
06-06-2005, 05:46 AM
#19
Launching!
Join Date: Nov 2001
Location: North Royalton, Ohio
Posts: 280
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by WJ SOM SS
Do they make a Detroit True Trac carrier for the 7.5 stock rear axle, and are they stronger than the Eatons or HD Torsens? Thanks. WJ
I guess they do. Part # is TT 911A415. Looks like about $300. Probably should just save for the 12 bolt.....
