detroit true trac
Thread Starter
|
Senior User
Joined: Mar 2000
Posts: 115
Likes: 0
From: Norway
detroit true trac
I have an open 9" N 31spline axle from a 70 Fairlane under my 55 F-100.(WEC-S OFB 3.25 9 890A) I'm putting in a new engine which will give me around 500HP and I want traction. When looking around I've decided to go for the Eaton Detroit TrueTrac ( alot better roadability that a Detroit locker), but even though the part nr 913A586 should fit, I see there are a number of different types on E-bay.I especially want info on the "slim" one and the "thick" one on EBay now. Which works for my axle?? The axle is on my truck and in use now,so I really don't know anymore about it than size and age
Lead Driver
Joined: Mar 2004
Posts: 8,922
Likes: 153
A True Trac is one real piece of junk. I put one in a Dana 60 rear I used to have under my truck, It went less than a mile and then BANG. It made it home but the drive shaft would turn half a turn before it would catch. They took it back without any problems though. Now knowing what I do and what I've heard about them I don't think I would have liked it, cause it doesn't lock up instantly and unlocks frequently as you let the throttle off & sometimes you have to feather the throttle to get it locked up. For a 9" I've always liked the stock traction lock Ford put in them. A Detroit locker is a good choice too, their road manners aren't bad at all.
Senior User
Joined: Dec 2008
Posts: 226
Likes: 0
The trutrac I have in my Chevy has worked fine. Can't tell the difference from the stock limited slip in my '79 Ford 9". They claim a higher bios ratio so more power gets sent to the wheel with traction than with the stock setup and if you totally loose traction apply slight brake pressure to send torque to the wheel with traction(that would do the same with stock LS). Works sometimes, sometimes not. No doubt some have failed but 2 years of offroad with mine and all is good.
Thread Starter
|
Senior User
Joined: Mar 2000
Posts: 115
Likes: 0
From: Norway
My question was not if to use a true Trac, but if there are any differences between the two True Trac on Ebay now. The one is thin and cone shaped and the other a fat cylinder. Both seem to have the same ID number.Anyone know which one to use with my axle?
Lead Driver
Joined: Oct 2009
Posts: 5,406
Likes: 229
From: Pa
I hace never reseaerched for a 9", so sorry I cant help you. Most places (even on Ebay) you can call and ask whats up! I would say contact the seller's and see if they can tell you any discernable differences between the 2.
Thread
Thread Starter
Forum
Replies
Last Post
lasitter
1987 - 1996 F150 & Larger F-Series Trucks
6
Jun 13, 2014 12:32 PM
96_F250_Deezal
Clutch, Transmission, Differential, Axle & Transfer Case
15
Feb 2, 2014 03:18 PM
airwick51
1948 - 1956 F1, F100 & Larger F-Series Trucks
2
Jan 28, 2011 01:20 PM
eco
Clutch, Transmission, Differential, Axle & Transfer Case
3
Apr 3, 2007 05:34 AM
