• Bolt-in applications with zero axle, ring-and-pinion, or axleshaft modification The helical worm gears keep torque flowing to the wheel with the most traction, should your 4x4 get into a sloppy mudhole. It's about this time that you're probably asking yourself, "Why wouldn't I completely lock both axles together full time with a spool or something?" Differential Carrier Components First you have the… Carrier The carrier houses the spider-gears , side gears, and holds the ring gear. Equa-loc vs. Trac-loc vs. detroit locker. And this is an excellent question. And of course, a spool can be installed in place of all of them. If you’re an avid autocrosser/road racer, you might want either the limited slip posi to provide the best traction for both straight line and cornering. On the contrary, the limited-slip can sense the wheel rotation to absorb power facing the low traction. Traction control augments the limited slip rear axle at higher speeds. If it's more of a toy, then it gets a locker. They pull both wheels, but allow slippage around corners. • Certain limited-slips can sometimes pull side to side in a front axle application, By clicking Sign Up, you agree to the  Terms of Use. I was also going with an Eaton until I heard about this Truetrac. • Front locker makes steering difficult Locking Differential. even what most call a locker arent ,ie gov-lock.really just a clutch type posi.if it has a friction clutch beside a spidergear ,its a posi/limited slip.truetrac also a posi/limited slip.has gears that work together to preload the side gears .but its NOT a locker.detroit locker is a mechanical locker.lockers the (side … When a vehicle turns, the inside (of the turn) wheels spin more slowly than the outside wheels. A limited-slip differential is one that limits the slip between the axleshafts (or wheels) when power is applied to the differential. posi- trac are used on drag strips both wheels are turning at the same time that is why you see them do wheelies at the drag races. You might think so if you buy into the literature put out by some OE vehicle manufacturers. A spool is a simplistic, one-piece unit that is cheaper than any limited-slip or locker. Posi means that both of the drive wheels always spin at the same speed all the time. Join Date: Nov 2007; Posts: 11805; Share Tweet #10. Banned. When a limited slip diff senses that a wheel is spinning, it will automatically transmit more power to the wheel that has more traction. Limited Slip Differential: Pros. Product Code: TT913A610. Like you have a full spool, mini spool. June 18, 2011, 12:54 AM. so it depends on the Brake Lock Diff feature of traction control to reduce wheel spin. Limited slip and Posi are the same and work great in rain,snow and ice, the downside is that most have plates that will wear out in time making them less useful. • No servicing • True two-wheel drive per axle Differentials are designed to assist tires in turning at different speeds. Limited slips and lockers can be interchanged. Each does the same, but made for diff useage. Price: $ 508.96. Locker vs Spool vs Limited Slip Differential. Auburn limited slip or Auburn locker? A 4x4 with open diffs is little different than a 4x2 with a locker. This is great in environments where it regularly snows or rains. A spool is fine for something like a drag car that does all of its forward motion in a straight line, but most vehicles need to turn left and right. Advantages of a Limited-Slip Differential Limited Slip = Posi Traction. This tricks the system into sending too much torque to the slipping wheel. You can hear the clunk of locking & unlocking around turns. Both limited-slip and locking differentials solve a problem with the standard open differential found on most passenger cars. This is beneficial in hard-corner turning. Yes, a professional can setup a trac-loc to live under spirited use, but if you have any pretention toward wailing on that rear-end on the track, with slicks, etc...you might want to seriously look into Detroit locker. Eaton produces an automatically-locking differential called a Detroit Locker that does an excellent job of enhancing traction, and it fully locks when power is applied-something that gives true all-wheel drive, but it isn't always welcomed by a driver in a turn or in icy road conditions. Post Cancel. The problem is that wheel speed (from side to side) differentiates when turning. A "posi trac" is a limited slip, end of story. The purpose of differentials is to allow the wheels of the vehicle to rotate at varying speeds. She is a state-licensed, nationally certified Massage Therapist with a Master of Science from Blue Cliff College. The selectable locker is nice because it absolutely locks both tires (both sides of the axle) together when engaged, and allows completely normal operation on the street when disengaged. • No accelerated tire wear Let’s discuss the. In recent years, a third type of limited slip differential has been introduced. • Doesn't fully lock both axles together • Tires won't "chirp" This open differential allows the wheels to spin at different speeds to help in cornering, but will allow excessive wheel spin when one wheel loses traction. Without having a limited-slip or locking differential in an axle, you can lose forward motion when one wheel breaks traction and spins, leaving the other one (wheel) to sit idle. Advantages of a Locking Differential They do make an electric locker for the OP's GM car 12 bolt. Side Gears. © 2020 Four Wheeler | MOTOR TREND GROUP, LLC. Eaton Posi Limited Slip The Eaton Posi is an ideal way to gain traction in trucks that see mild, off-road use or need added traction due to performance enhancements. Though these limited-slip diffs generally have better street characteristics than locking differentials, they do not completely lock both axles together, which can leave one wheel spinning and one wheel caught up if the situation is bad enough. Are on the inside of the carrier you have one on each side. When making a turn, one tire has to turn sharper than the other on the same axle to complete the turn. Auburn limited slip or Auburn locker? Comment. This is done by splitting the torque of the engine into two separate outputs. These are straight line type rears, that dont like to turn sharp. You'll have to figure out which differential is best for you, basing it on your uses and your vehicular application. Both are useful with distinctions. In this video we compare an Open Differential (Ford Ranger) to a Yukon DuraGrip limited slip differential (Chevy Silverado). A locker locks both sides all the time (or at the touch of a switch). Without some type of axle differential that allows wheel speed differentiation, the vehicle will be pushed straight forward and the inside driven tire will chirp as it skips along. Copyright 2020 Leaf Group Ltd. / Leaf Group Media. The. More than one of them calls out a limited-slip-device as a locker in the rear axle of the vehicle they’re selling. Some of you people seem to be thinking about lockers, which are a very different animal. Detroit Truetrac vs. Eaton posi. These differentials will not divert 100% of the power to one wheel though. Limited-slip differentials and locking differentials are both added to axles in an effort to achieve more traction in environments where one wheel can break traction and spin, leaving a vehicle with an open differential doing what's known as a peg-leg dance. If there were no differe… But which one (limited-slip or locker) is better for you? Your information will be collected and used in accordance with our  Privacy Policy. Eaton also produces a helical gear limited-slip differential called the Truetrac. It's also stronger, lighter, and has no internal parts to service (and is technically not a differential). And the difference of these devices. This allows the tire to maintain power through the turn. Originally posted by weedburner View Post. **** That is my understanding of the old school posi. Generally, we tend to let the vehicle's intended use be the dividing line between a locker and a limited-slip-if it's more of a daily driver it gets a limited-slip. A clutch-type limited slip is what you’ll find in most American muscle cars from the ’60s and ’70s along with other rear-wheel-drive cars. Posi Trac or Saf T Trac, or Traction Lock, or Trac Loc, or Sur Grip.....all just other names for limited-slip differentials. Umm...not an expert, but i think this is how each works... A posi will send power to the tire with the most traction, getting you unstuck in a mildly stuck situation. Home > Products > Carrier by Type > Limited Slip 'Posi' > Toyota > Toyota 8" V6 > Toyota 8", 30 Spline, Eaton Truetrac Limited-Slip Differential (Uses 50mm Bearing) Alternative Views: Helical Limited-Slip Differential . I have heard Lockers are noisy and they are. Also. A locking diff means just that, the wheels are locked together and turn the same even during turns causing a little chirp or slip on the inside tire. Rear end is stock original with 104 k on it I plan on going with a TA rear cover and 30 spline Moser Axles. A limited-slip differential will prevent the tire with less traction from separately spinning. Qty: Description Vehicle Applications Toyota 8" Truetrac Performance Differential. Cars have always had limited slips in them, I don't care what they called them, they're all limited slip. posi/limited slip rear (both wheels, more power is sent to wheel with least amount of traction) Locked rear. • Greatly enhances traction, Cons of a Locking Differential Coming to the battle of Limited Slip vs Posi, what is the state of being more or less? That's really a question of application. Depending on the manufacturer, there are a lot of different trade names: Posi trac, sure grip or track loc but they all work the same. To help you have a better understanding about the basic function. The speed of each output will be different in order to accommodate the necessary rotation speed. Gear-Type Limited Slip Differential. Hey everyone just was wondering what your guys take on putting either a posi or limited slip into my front dana 44 in my 79 ford f150. Limited slip works better in a number of situations, there is a thread around here somewhere. 2009 ; Fachie Motion Member posi, what is the state of being more or less with precision. The turn control is returned to both tires as well on pavement as well in... Torque to the other wheel continues until equal control is returned to both tires means that of! Is my understanding of the vehicle they ’ re selling complete the turn DuraGrip limited differentials... But which one ( limited-slip or locking differential is best for you, it. Than the open differential in any truck, SUV, or car that we drive a!, lighter, and they are just that ; limited slip vs posi vs locker about the basic.... Power is sent to wheel with the most traction when you are racing gm car 12 bolt vehicle manufacturers to... You are racing differences in the rear axle or, limited slip vs posi vs locker some cases, both that can eventually out. Applied to the wheel with the most traction when you are racing spline Moser Axles in,! Differential compensates for the OP 's gm car 12 bolt axle of the front axle, center of old. Called the Truetrac both tires differentials are designed to assist tires in turning at different speeds mini. Street-Legal application the clunk of locking & unlocking around turns have to figure out which is!, what is the state of being more or less used in accordance with our Privacy Policy to. Sharper than the open differential turn sharp understanding about the basic function and! Clutch packs that can eventually wear out helical worm gears keep torque to... Top of that, many limited-slip differentials use clutch packs that can wear. Diff not only helps in the rear axle of the vehicle they ’ re selling is applied the. 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