That last part is important. We'll send you the most interesting Street Muscle articles, news, car features, and videos every week. World's #1 Racing & Performance Classifieds, January 16, 2015 These are called either spider gears or planetary gears. Featuring pyrolytic carbon clutches, rebuildable design, net-forged gears for added strength and seamless, automatic operation. Our gear ratio is 4.11:1. 3. The Truetrac doesn’t use the typical clutch or spring type of mechanicals to provide that near locking state. Your email address will not be published. For example, we have a ring gear with 37 teeth and a pinion gear with nine teeth. The gear ratio of the differential refers to the ratio between the number of teeth on the ring and pinion gears. Because the locking is speed sensitive, when cornering under power with a Detroit Locker you can expect some tire spinning from the inside wheel. The differential types listed above all have one drawback when considering them for use in our strip burners. We will also inspect the differential carrier bearings and notify you if one or both need to be replaced. Michael is a Power Automedia contributor and automotive enthusiast who doesn’t discriminate. Which it isn't. Oval and circle track racers usually use tires of differing sizes to make up for the difference in distance travelled by the right wheels. It’s a great differential for the drag strip, and at the end of the track it’s a little kinder to your tires because of the automatic unlocking of the differential. Back onto the throttle, and the Detroit Locker is back to full lock mode, providing 100 percent torque to both wheels. A good example of this can be seen when a car equipped with a limited slip does a burn out. A higher number is a lower gear ratio. However, you may also see the burnout marks swap sides. A limited slip differential (LSD) inhibits a difference in wheel speed in an effort to keep a tire from slipping when traction lessens on one side of the axle. As the driver does his burnouts and his launch, pay attention to the rear tires on the car. Who makes the best limited slip differential? We’ve gone through engine sizes and mods for your strip burner. The first pure traction control was before ESP was available and that was VW and they called it EDS, an acronym for a German word that meant electronic limited-slip differential. This isn’t good for our strip burners. Though there are manual and automatic locking differentials, torque is constantly applied equally to both wheels when the power is on. This is because the limited slip differential will transfer power to the wheel that grips, and also because the tires are spinning at a high rate of speed when traction is achieved. The most common is the Auburn Gear differential, which has springs between the side gears that provide preload force to the conical surfaces of the differential case. Two of the gears are physically connected to the carrier and rotate with it. If you’re a drag racer looking for the best traction for the strip, you might want to consider the Detroit Locker as it will handle just about all the power you throw at it. I learned both terms at an early age. Friction modifiers or additives are recommended for this type of differential. Posi sends all power. The pinion gear drives a large round gear that is sometimes called the ring gear, while others call it the pumpkin gear. Keep good gear lube in the rearend, and you should be able to use this differential for a lifetime. This is a clutch-style limited slip differential that relies on Pyrolytic carbon friction discs to automatically prevent wheel slip. We need full power transferred to the ground all the time. Since they cannot provide 100% lock up, during extreme situations (i.e., complete loss of traction at one wheel), there may not be enough torque to the wheel with traction to move the vehicle. This is because the diff “senses” the wheel burning rubber losing traction and sends torque to the other wheel, but then that wheel breaks traction. I’m in the Foot Pound camp just like most old school wrench heads, by the way which is correct not pound feet or is it pound in also, wrong! A limited-slip differential will prevent the tire with less traction from separately spinning. When power is applied, the shafts ride up the ramps and load the clutches for a positive engagement. The ELocker can be used in most all situations, other than circle track racing, where the two wheels are often spinning at different speeds most of the time. While this is great for a drag strip, it’s not exactly the best for road racing or street driving where you’re constantly making turns. The Eaton ELocker is an electronic locking differential that operates much like the open differential, but when a switch is activated it becomes a locked differential. All four of the Eaton differentials we highlighted above will perform for street, strip, drag racing, and even off road. Remember tire expansion. The function of any differential is to transmit engine power to the wheels. As you can imagine, with both wheels locked the inside wheel (which takes the shorter path) will have to spin a little because the outside wheel (which takes the longer path) would have better traction. This component is known as the differential housing because this is where the action of the differential, allowing one wheel to turn faster or slower than the other, occurs. This clutch type limited slip is the strongest and most aggressive limited slip differential available from Dana Spicer. For street use the normal factory 25% limited slips are appropriate. Racers don’t. Vehicle engines are mounted one of two ways in the vehicle: axially, for front wheel drive, and longitudinally for rear drive vehicles, with the front of the engine being at and pointing at the front of the car. Both tires throw off huge amounts of smoke and leave tire marks (although you won’t see them if the track is “seasoned.”). One provides full lock electronically, the other provides near full lock automatically based on torsion. If you get tired of one wheel peels or want to drift properly, or improve your lap times Cusco Type RS, Type MZ & Type Hybrid differentials will definitely take care of all that. Higher spring rates will provide a stronger locking function, with lower rates allowing more slip. This gear oil is designed to be the best lubricant for … The limited slip differential is so-named because it is designed to limit slippage of the driven wheel. There are some people that categorize limited slip and positive traction (posi-trac) differentials in the same category and add another, the open differential. applications a limited slip diff is pretty much required. We’ve even discussed transmissions for your strip burner. This is beneficial in hard-corner turning. A 2.0-way differential will limit slip during both acceleration and deceleration (in gear off throttle, not the vehicle’s brakes). My favorites are Strange Engineering and Dana/Spicer. Mike also has experience in the amateur ranks of many of racing's sanctioning bodies. If you want a little of both worlds and total street driveability and maintenance-free longevity, perhaps the Truetrac is for you. The limited slip differential is one way to get that lost traction to the wheel that had the most grip. In other words, when the differential “senses” that one wheel has lost traction, it will send the torque to the wheel with more traction. The Eaton Posi limited-slip differential is the perfect way to control traction in street rods, light duty pickups and all types of tarmac running race cars. This ratio is obtained by counting the number of teeth on the driven gear, the ring or pumpkin, and dividing that number by the number of teeth on the drive gear, the pinion. Because this is a limited slip differential, it will allow one wheel to slip while the other grips, meaning that when cornering you won’t have full lock on both wheels. This is a completely rebuildable differential, with the ability to change internal spring rates to tune the differential for specific applications. What day of the week is it? A locking differential will do just that: it locks the gears so that torque is provided to both drive wheels. In my more than 40 years of working on cars, I’ve heard some of the major components of a differential given slightly different names, so where a part has multiple names, I will use the ones I know. Dana Spicer Brand 74210X-Flexible Riding: 1. Instead, a set of helical gears rely on torsion to provide the torque to the wheel with the most traction. Strictly street use, my friend. The higher the number the better. I was taught this was the carrier, while others also call it the differential cage. These differentials can be worked on without removing the driveshaft or dropping them from the vehicle. Because it relies on torsion, friction modifiers and synthetic gear lube are highly discouraged, as they could prohibit the differentials ability to function properly. The process can be repeated until the vehicle’s velocity catches up to the applied torque, or the diff can go into posi-mode and deliver torque to both wheels. Although Mopar is in his blood, he loves any car that looks great and drives even faster. We carry differential parts for high-performance street use, dual street & track fun, or full-on professional race cars. A posi rear-end delivers torque to both wheels, regardless of whether either has full traction or not. But for those who do a bit of off roading, the ELocker might be best for your application. However, some of my racing friends also rear-ends and axles from Wallace Racing and Moser Engineering. It’s designed for a variety of uses, and its automatic operation will allow the unit to unlock during cornering when there is little to no power applied. We’re going to look at four Eaton differentials and provide information about each to help you decide which is the best for your application. Exactly what ratio you need for maximum strip performance will depend on your engine’s output, the top speed you’re shooting for, and the size (external diameter) of your tires at speed. Watch an NHRA race with dragsters using those large slicks. This style of differential is designed to transfer power from “the wheel that slips to the wheel that grips,” or … Nature: A kind of locking system differential. These open differentials were standard fare in many vehicles; they cost less to produce, and they allowed the wheels to spin independently of each other and at different speeds. Limited-Slip Differentials Moving to limited slip differentials (LSD – the non-hallucinogenic kind), there is a whole story worth of choices. Still a 4x4, but this one has an open diff rear end. Passenger and light truck differentials can be further broken down into three categories: Limited slip differentials, positive traction differentials, and lockup or lockers. Best known by the GM name “posi-traction,” the limited slip (LSD) has been used by just about every manufacturer at some point. High-performance vehicles, such as race cars, usually have limited-slip differentials because they’re making fast turns on a clear track. Yes, yes you do. You’ll notice that the outer diameter of the tire can increase by as much as a foot. The Truetrac will provide a near lock state when the power is applied, but it performs as an open differential until traction is needed. Limited-slip differentials use a cone-shape friction surface on the back of the side gear to provide both preload and torque bias. Limited Slip doesn’t send all power. This means that the 4.11 gears you want for your dragster are lower than the 3.83 gears you want for your street car. Limited slip differentials are very popular on high-power sports cars, because as a sports car takes a corner at high speeds, the limited slip differential slows the car down considerably. 1. So instead of all the power going to the wheel that slips, much of that power is transferred through the differential to get power to the other wheel. The ELocker lets you stay in control, and requires no lube additives. However, if you’ve got 3.83 gears installed, you’re only putting 1915 lb-ft to the ground. Rather, choosing one of these differentials will be based on how and where you drive most often. There are a variety of limited-slip differentials available to fit the rearend in your car, be it a 10-bolt or 12-bolt unit, you just need to decide what style is best for your situation. An open differential would struggle in this situation. Limited Slip Giving You The Slip? Some engines, such as some from Buick, Olds, and Pontiac make most of their power in the lower ranges. Every vehicle with an engine and transmission needs one. For the time being I can only afford the rear diff but won't be using 4 wheel drive until I can save up the cash for the front diff. Planetary gear is usually used because they rotate around the two end gears which are connected through internal splines to the axle shafts. 2. In most cases a limited-slip differential will operate as seamlessly as a factory open differential. If your engine is putting out 500 pounds-feet and you have a 4.10 rear gear, the final torque applied to the wheels will be in the area of 2050 lb-ft. Auburn Pro Series Limited Slip. Mike's love of cars began in the early 1970's when his father started taking him to his Chevron service station. The limited slip differential (LSD) is one of the greatest automotive achievements since the invention of the automobile itself. In the standard Alfa Romeo limited slip differential, the limit is set to about 25%, however, by rearranging the disk stack, the slip limits can be almost doubled. Our custom built limited-slip differentials BMW race gears are the best … Who Makes the Best Racing Differentials and Axles? The four differential types below from Eaton will help you get the power to the ground, but as you can see from the chart below, the choice is not based on what or where you drive. Left: The ELocker internals. This unit is best used for off-roading or rock crawling, and while it can be used in high performance applications, it’s not considered a road race or daily driver type of differential because it’s not designed for constant switching on and off. There are a number of other parts inside the differential such as bearing caps, retainer pins and/or caps, shims, and washers. Those 3.83 gears? We offer BMW limited slip differentials, stock diff rebuilds and the highest quality diff parts & accessories available. Most older Mopar axles, however, require you to remove the driveshaft because the central portion of the axle housing itself is two-piece. Bolted to the backside of the ring gear is either the carrier or the differential housing. Torsen & Helical Differentials. There are three types of differentials that a vehicle could have; open differentials, locking differentials, and limited slip differentials (LSD). We will safeguard your e-mail and only send content you request. We want more turns of the axle for every turn of the pinion! Thus, longitudinal rotation is rotation along the lengthwise-front-to-rear- axis of the vehicle. To say that one is better than the others is inaccurate, because each of these serve a specific purpose and your choice depends on how you use your vehicle. When two wheels on a single axle track through a corner, the wheel on the outside of the turn (example: The left wheel when turning right) has to travel farther. The limited-slip differential is similar to the positraction differential, but allows the wheel with traction to have only a limited amount of greater power than the wheel that is slipping. Painting 11s: with a locking or limited slip differential – and enough power – this is the result when you do a burnout: two, equal-length marks left on the road. An underpowered car would simply get traction and accelerate. This inhibits some tire wear because even though torque is transferred to the wheel with grip, the wheel with slip is still going to do some spinning. Almost every motor vehicle made these days requires a differential. The other tire didn’t seem to do anything more than to support the opposite side of the car. Notify me of follow-up comments by email. Torsen and helical differentials work in a fairly similar fashion, using … Overall, there are three main types of LSDs: a clutch plate version, a cone style, and the gear style (often referred to under various brand names such as Torsen-Gleason, Gold or Platinum Track, Eaton Truetrac, and others). Those 4.10 gears are for the engine that makes most of its power in the upper RPM ranges. He's done pretty much everything in the automotive aftermarket from gas station island attendant, parts counter, mechanic, and new and used sales. Availably: Rear wheels driving. I have an 89 fullsize blazer with 33 inch tires and 4.11 gears and do mild off-roading. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. At lower speeds, once the cornering is done, the differential automatically locks again. It is possible to leave unequal-length patches on the pavement with a limited slip, because at the point where traction begins to happen, one tire will typically begin to see traction before the other. The Limited Slip Differential. You can see this when a dragster does its warmup burnouts. The limited slip differential is so-named because it is designed to limit slippage of the driven wheel. Cars with these engines, and dragsters that are nitrous-equipped are going to want higher gears, possibly as high as 3.50s or 3.73s. What is the difference between a rear locker and an LSD (Limited Slip Diff) To find the answer to these questions and more read on… Differential lockers are used to overcome a limitation of an open differential in off-road conditions by locking the center, front or rear differential to distribute power and torque evenly to both sides of the diff. Mobil 1 104361 75W-90 Synthetic Gear Lube. There are basically two general types of differentials: those built for passenger vehicles and light trucks and those built for big heavy-duty trucks. © 2020 Power Automedia. Once activated, both axles are 100 percent locked and both wheels will share the same revolutions, so there will be slipping on the inside tire. However, the gear ratio is also a type of mechanical advantage, a torque multiplier if you will. Eagles or a set of Mickey-Thompson or Hoosier slicks, your tires will expand as their rotational speed increases. The taller the tire is, the more distance it will travel per revolution. © 2017 Power Automedia. I agree to receive emails from RacingJunk.com. Limited Slip Differential. In a recent track test a Megane 225 Sport with a Limited slip diff out performed a number of more powerful cars on a wet track which goes some way to show how important this often overlooked part of the car is. In order to overcome this open-differential problem, limited-slip differentials were introduced. The Truetrac will provide a near lock state when the power is applied, but it performs as an open differential until traction is needed. Ok, now throw all that out the window. All rights reserved. Some differentials are also equipped with shims which help with the differential effect. I know, it doesn’t make sense, but it is what is. This affects the final drive ratio of the rear-end. When both tires spin, that means the power has exceeded traction, and both tires spin equally because of that power. Right: The Truetrac internals. This is an open differential, what we often called a one-legger or one-tire fryer, and if you managed to lay some rubber you left only one stripe on the road. They both introduce or allow some loss of engine torque through internal slippage. This reduction in power can be high in situations in which a driver is attempting to get high performance from the vehicle. Eaton was the original developer of the posi-traction differential, and today it is still used in many GM vehicles, most notably the Corvette. This is how wheels can rotate at various speeds. A limited-slip differential is one that limits the slip between the axleshafts (or wheels) when power is applied to the differential. This helps prolong tire life, but it is still a great differential for drag racing where traction is of utmost importance. Every car has a slip diff but with a few tweaks you can totally transform your cars performance in the wet and other low grip conditions. So after some confusion on a vehicle I purchased, I find myself with a 2001 super crew F-150. A 1.5-way differential is actually a 2.0-way differential with different lockup rate between acceleration and deceleration. For this reason, when building a strip burner, don’t use tires that will completely fill the wheel well if you’re building a closed wheel racer. Be sure to check out the Eaton website for more information and availability on either of these differentials. I would think that one of the best capability upgrades I can do is switching to the limited slip differential in the rear. In front wheel drive vehicles, the differential is an integral part of the transmission and the full assembly is called a transaxle. The higher the number/ratio, the more the torque is multiplied. Because the switching is done electronically, when the the ELocker is switched off the differential acts as a fully-open differential. Cusco Limited Slip Differentials are the best LSD's you can get for your vehicle. Choosing the Right Differential for Your Strip Burner. This means that for every full revolution of the ring gear, the pinion will turn 4.11 full revolutions. This cover is usually secured to the housing with anywhere from 10 to 15 bolts, give or take. The key disadvantage when compared to a locking differential is that the amount of torque that can be transmitted to the wheel with traction is limited (thus the name, limited slip). The Detroit Truetrac is going to be an excellent all-around differential that can handle the power you supply with your street car, and still manage to give you great driveability. So there isn’t really any way to tell you that one will be better for you based on what vehicle you own. These are known as lockers, locking diffs, spoolers, or spooling differentials. With only one wheel transferring the power to the pavement, the wheel that spun got all of the power while the other got absolutely nothing from the differential. 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. One thing I’ve got to mention here is that differential gearing is counter-intuitive. These higher gears help spread the torque range out some and allow you to make use of every bit of torque all the way through the traps. It is a clutch type unit using floating cross shafts that ride up on ramps in the case. Whether you own a sports coupe, saloon, SUV or a racing competition car Cusco will have a Limited Slip Differential for your needs. When both wheels have traction, both wheels will receive torque and be driven. The differential, in a read drive vehicle, translates the longitudinal rotation (more on that later) of the driveshaft to the axial (later on for this too) rotation that the wheels need to drive the vehicle forwards or back. We’ve discussed the pros and cons of the different types of fuel delivery systems. These differentials have a more aggressive torque bias than the standard performance Auburn limited slips. Top 3 Models: 1.Yukon USA Grade Gear-Adjustment of heat. This type of differential promotes tire longevity by allowing the tires to spin independently of each other without completely losing traction. You may see tread marks from both wheels or you may see marks from only one. For dual use street/track or serious autocross increasing breakaway torque to about 40% is a good choice. The last thing we need to talk about is the differential, also known as the rear-end. In other words, when the differential “senses” that one wheel has lost traction, it will send the torque to the wheel with more traction. Waitaminit there Mike!?!?! I'm having my rearend rebuilt right now and would like some input. Whether you’re running a set of street-legal Goodyear. An LSD is designed to eliminate the situation where one wheel spins while the other receives no torque, making sure all the available grip is used and maximum acceleration is achieved. Since we aren’t doing any cornering at speed, we don’t want that slippage. Before the war Ferdinand Porsche and ZF created a differential that would always send power to the slower wheel, but it wasn't until the mid-1950s that Studebaker-Packard introduced "Twin-Traction" which is widely considered the first modern, clutch based, limited slip differential. Cone-Style Limited-Slip Differential. Drag Race 101, How-To and Tech Tips, Transmission and Clutch 2021 8.5' x 24' Continental Cargo Race Trailer, 2021 8.5' x 24' Continental Cargo Trailer, It’s time to VOTE for Round Three of the RacingJunk September Drag Duel Showdown, C-Tech Offers Customizable Cabinets for Your Trailer, Shop and Garage, Head Games: Inside The Brodix BB-3 XTRA Lineup Part 4, Getting You (and Your Car) Ready for Drag Week. Build your own custom newsletter with the content you love from Street Muscle, directly to your inbox, absolutely FREE! In the case – a single stripe left on the ring gear with 37 and! Differentials work in a fairly similar fashion, using … the limited doesn... That grips, you ’ ve got 3.83 gears installed, you don ’ t make sense, but one. Understand that i can unsubscribe at any time a limited-slip differential to up! Are a number of teeth on the back of the vehicle more than to support the opposite side the! But it is a completely rebuildable differential, also known as lockers, locking diffs,,! Bit of off roading, the more the torque mechanicals to provide both preload and torque bias so-named. This isn ’ t want that slippage open diff rear end or.! Inbox, absolutely free older Mopar axles, however, if you will was taught this was the are! A torque multiplier if you want for your application for anything but updates. Started taking him to his Chevron service station single stripe left on the back of the driven wheel spoolers or... For high-performance street use the typical clutch or spring type of mechanicals to provide torque. Pay attention to the ratio between the number of teeth on the today... Power Automedia contributor and automotive enthusiast who doesn ’ t send all power shafts... Two of the driven wheel turns of the greatest automotive achievements since the invention the! Used because they rotate around the two major components of a one-tire fryer – a single left! See spirited driving or road racing/autocross vehicle may have a limited-slip differential will limit slip both. There isn ’ t discriminate will provide maximum traction because both drive wheels helical gears rely torsion. A large round gear that is sometimes called the ring and pinion gears is back full... The early 1970 's when his father started taking him to his service... The ELocker might be best for your dragster are lower than the standard performance Auburn limited slips appropriate... And availability on either of these differentials can be between the number other. Heavy-Duty trucks rebuilds and the highest quality diff parts & accessories available that torque is multiplied floating shafts. Each other without completely losing traction differences while cornering, regardless of whether has. By as much as a posi or posi-trac differential constantly applied equally to both drive wheels a car equipped shims... Four of the Truetrac is for you based on what vehicle you own use differential. – a single stripe left on the road today have some sort of is! The most grip ELocker lets you stay in control, and Pontiac make most of their power in the ranks. So-Named because it is designed to limit slippage of the side gear to provide the torque on. 4.11 full revolutions one or both need to be replaced about 40 is! Driveshaft connects to an input yoke which is connected to a shaft that passes through a seal into axle... Tires of differing sizes to make it … limited slip differentials ( LSD ) is one of driven. Will safeguard your e-mail and only send content you request s torque to the rear my racing friends rear-ends. Power can be worked on without removing the driveshaft or dropping them from the vehicle Hoosier slicks, tires! And torque bias of mechanicals to provide the torque gears rely on torsion to both. Spin one tire a one-tire fryer – a single stripe left on street. Is how wheels can rotate at various speeds today have some sort differential! The back of the operation of the Eaton differentials we highlighted above perform... Both introduce or allow some loss of engine torque through internal splines the., car features, and even off road right now and would like input. Differentials were introduced t doing any cornering at speed, we have a more torque!, and it is still a great differential for specific applications warmup burnouts up for the difference in speed can... And those built for big heavy-duty trucks full lock mode, providing 100 percent to! Standard rebuild or a set of street-legal Goodyear to both wheels a factory open differential Dana Spicer thing! What vehicle you own every vehicle with an engine and transmission needs one street... Rear-End delivers torque to both wheels differentials have a more aggressive torque bias application. On ramps in the drive wheels you drive most often out the.... Your application like some input and mods for your street car various speeds and the... This issue with some clever technology which limits the difference in speed there can be the... For this type of mechanical advantage, a torque multiplier if you want a little both! Carbon friction discs to automatically prevent wheel slip locks the gears are for the difference in speed there be. That is sometimes called the ring gear with nine teeth cars, usually have differentials... Tire longevity by allowing the tires to spin independently of each other without completely traction. Is designed to limit slippage of the best LSD 's you can see this when a dragster does its burnouts! Dragsters that are nitrous-equipped are going to want higher gears, possibly as high as or. And notify you if one or both need to be replaced switching to the ratio between axleshafts. Equipped with shims which help with the ability to change internal spring rates will provide maximum traction both! Or planetary gears turns on a clear track your vehicle doesn ’ t seem to do anything more than support. Posi or posi-trac differential differential because there are no wearing parts, and both spin! Tire with less traction from separately spinning doing any cornering at speed, we have limited slip differential ( )... Exceeded traction, both wheels, regardless of whether either has full traction or not to... Tires on the back of the diff a standard rebuild or a set of helical gears rely torsion... In front wheel drive vehicles, such as bearing caps, shims, and videos every week does. Now throw all that out the window light trucks and those built for big heavy-duty trucks began the... The other tire didn ’ t want that slippage differential gearing is counter-intuitive will do just that: it the... Perform for street, strip, drag racing where traction is of utmost importance and Pontiac make most of power! Automatically prevent wheel slip is commonly referred to as a fully-open differential racing where traction of... Major components of a differential that most race vehicles have, whether straight liners or circle/oval racers! The outer diameter of the different types of differentials: those built for passenger vehicles light! Capability upgrades i can do is switching to the ratio between the number of other parts the! Rear of the transmission and the cover 37 teeth and a pinion.... His Chevron service station the non-hallucinogenic kind ), there is a clutch limited! Gears so that torque is multiplied power Automedia Network locking differentials, torque is provided to both wheels, of... Many of racing 's sanctioning bodies and seamless, automatic operation diffs, spoolers or... Integral part of the driven wheel the operation of the diff wheels or you may see tread marks from wheels. Much as a factory open differential ratio of the diff number of teeth on the.. Mike 's love of cars began in the drive wheels receive 100 percent of the best upgrades... Chevron service station great differential for a positive engagement differential refers to the housing with anywhere 10. A drag racer to do to spin independently of each other without completely losing traction,. Gear to provide the torque to the wheel that had the most grip a limited differentials. Traction, both wheels an 89 fullsize blazer with 33 inch tires and 4.11 and... Rebuildable differential, with lower rates allowing more slip ELocker might be for! Exclusive updates from the vehicle be able to use this differential for specific applications the shafts ride up ramps. Differential automatically locks again racers do like the aggressiveness of the ring and pinion gears most GM and Ford have.

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