If you never encounter a loss of traction, particularly on one wheel only, the G80 will never even lock in. It operates as an open differential under normal driving conditions, so that one wheel can spin faster or slower as necessary. They are targeted for heavy vehicles and for protection of the vehicle, mostly for driving off road and situations where you’re exceeding the traction capability of the tires and drivetrain.”. Jul 08 2017, 9:41pm. Or is the g80 good enough for my setup and type of driving? Detroit TrueTrac 914A538 Detroit Truetrac Differential GM 14-Bolt Brand: Detroit TrueTrac. Millions of GM trucks and SUV's vehicles on the road successfully using G80, its an excellent product. When traction is gained again, the differential resumes normal operation. That causes the clutch packs to grab and transfer power to the other wheel. My truck is a 2010 ecsb 5.3 2wd. That preload helps in situations of extreme difference in traction surfaces.”. An Eaton Truetrac for the Dana 44; and one being installed in a fifth-gen Camaro rear housing. “The Posi transfers a certain amount of torque over to the wheel that has more traction. Yeah probably not but I just see so many comments calling it the grenade 80, like it's gonna take out the whole rear end. On the EATON Posi, it’s about two-and-half times biased toward the the wheel with more traction. I've gone back and forth if I should go with the Truetrac or duragrip for the 13 and older for my 14 and use the spacer or wait till Yukon has the unit specifically for the 14+ models. I like TrueTrac’s claims of being low maintenance, basically install and forget. Only a locker works well in those conditions. It can handle a few burnouts though right??? As a result, we went to a locking ring style with a ramp plate, it’s a mechanical engagement, and it has a lock ring that goes around the OD of the side gears and locks it to the case. “The oldest product in our automotive performance line, originally developed in the 1920s, the EATON Detroit Locker ranges from our 162 to a 650. EATON’s oldest and quite possibly best known automotive performance differential is the Detroit Locker. When torque input increases, the clamping load on the clutch packs increase. If so, forget the Detroit Truetrac (I used to run f/r Truetracs on a previous TJ) as it is ineffective when tire is in the air. The original units were not designed as a high performance off-road type of differential, but for low-speed engagements and controlled environments.”, “The real concern with those early units was when people tried to use them with large tires and a large motor, and engaged it at speed. Off Road Xtreme NEWSLETTER - SIGN UP FREE! Each is a different design, operates differently, and have some application overlaps and specialties. We speak in terms of bias as far as its ability to multiply torque from one wheel to the other.”. Then get out there in the vehicle you’re so passionate about and have some fun with its newly upgraded capabilities. Find Eaton Detroit Truetrac Differentials and get Free Shipping on Orders Over $99 at Summit Racing! A 10 bolt is not as strong as a 12 bolt. Carbon disc clutch packs, preloaded by a central spring assembly, are located behind each differential side gear. Again, it’s essentially a spool, but does allow you to drive on an improved road surface and disengage one wheel or the other so you don’t tear up the tires. Along with that, we’ve also got our own friction material. Eaton Detroit Truetrac differentials use a patented design of parallel-axis planetary helix gears to provide a quiet, automatic splitting of torque. Guys like it for the performance market because of its pure brute force traction. Creager told us, “the Truetrac differential is the first in the marketplace to my knowledge that had parallel access pinion gears. Just like teh G80 for the 8.5" SF and 9.5" SF? “Next EATON came out with its Posi, originally the GM posi-traction differential which came out in 1951,” Creager explained. – Creager, “When the EATON ELocker first came out it was OE in the Hummer vehicles from General Motors, but that unit has gone through several different design versions since,” Creager said. For example, the EATON ELocker for the Dana 35 unit has three pinions (due to the C-clip design), and the Dana 30 and 44 models have four pinion sets. The EATON Detroit Locker for the Dana 44 axle. It’s a plate-style clutch limited-slip-differential, and uses pre-load springs to provide initial biasing characteristics of a differential, but it’s not a locker. Your avalanche's rear axle probably would have blown up just the same even if it didnt have a G80. Exceptions include the “10 bolt” 8.5 \ 8.6 GM models, the “performance” Dana 35 & 44, and GM “12 bolt” with 35 spline axles. My truck is a 2010 ecsb 5.3 2wd. 1996 Chevy Silverado 2500HD, RC LB, 4x4, 14 bolt FF 3.73 posi, to do: Suncoast 4L80E, completely custom engine, true dual 4" exhaust 1987 GMC Sierra 1500HD, RC LB, 12 bolt 3.08 posi, built 383 stroker, TH400, 13" towing converter, … Eaton’s new 30-spline Detroit Truetrac will fit the GM 14-bolt 10.5” axle. These were a step up from the original design, but we’ve modified that design even further on the newest applications such as the Dana 30, 35, and 44 that we came out with last year.”. I don't have a problem doing that if it is actually recommended/better... G80 is fine. – Craig Creager, EATON. GM 9.5" 14-Bolt Eaton Detroit TrueTrac | 33 Spline C-Clip Price: $610.46 Detroit Truetrac Lockers are maintenance free, fully mechanical, Torsen style limited slip differentials with helical gears instead of clutch packs (which wear out over time) to provide constant torque to both wheels while still allowing for smooth turns on pavement. G = Grenade again, you're comparing a shitbox 10 bolt to a 11.5" 14 bolt. Thanks all! We'll send you the most exciting Off Road articles, news, truck features, and videos every week. Eaton Performance Products has announced the new Detroit Truetrac for AAM 10.5″ (GM 14-Bolt) Differentials! It is not lifted and I mostly drive in town or the highway (no offroad). An automatic-locking differential, the Detroit can deliver ultimate traction for mild to extreme vehicle applications. We decided to go to EATON for the low down on differentials. I know the Trailblazer SS uses the 14 bolt 9.5" SF with the G86 limited slip differential. Wheels/tires are 285/45R22. GM 9.5" (AAM), 14 bolt Truetrac Performance Differential Fits: 2014 and newer must have a 3.23 or down gear ratio. GM 14 BOLT 10.5 FULL FLOAT Detroit TrueTrac, TT 915A545 30 Spline, 4.10 and Down. As with any plate-style linited-slip-device you have to run a friction modifier, which helps to alleviate a big concern a lot of people notice–the squeaks and squawks–with a posi when they have failed to install a friction modifier.”. Like anything, it can be misused, abused and misrepresented and blamed for things that are not it's fault. The engine is stock. My truck only has approx 24,000 miles on it. Re: g80 to true trac. The Detroit Locker is very popular in drag racing and the off-road community. The rear diff is open (no G80) and has a 10 bolt cover (8.6” I believe). Popular Resources: Diagnosing Noise (Part 1) Ford 9 Inch Differential Information; Four Critical Ring & Pinion Settings All rights reserved. My question is do I have to / should I swap out the g80 for a Detroit true trac at the same time? We also have a new generation that’s coming out this spring that has a new method of locking, it’s designed for the very high performance market and we’re validating the unit for applications starting in late November. The bolts are what holds the ring gear to the carrier, but also the cover to the housing so you can see what the size is without removing the cover. The 162 is for axles smaller than a Dana 30, but the 650 goes into very large mining trucks, and its core function makes it very popular still today. Absolutely fantastic differential, I previously had a g80 locker, and well, it did what they usually do when you put power to it. Before that, Gleason produced a perpendicular pinion, helical gear limited-slip-device.”, “Our Truetrac is a very robust unit. All rights reserved. Sounds like I can change the gears, keep the g80 and not worry about it grenading. This is an all gear driven differential that automatically provides smooth torque transfer for traction on demand. While many modern trucks, Jeeps, and SUVS offer and optional e-locker from the factory, they are often sourced from overseas manufactures and built to much lower standards.