If it spins in the same direction, you have a limited slip differential, or LSD. Of course, the easiest way to tell is the "lsd oil only" sticker on the rear of the differential. 19 people found this helpful. if it turns but is difficult to turn and the other wheel turns the opposite way then it more than likely has a posi/limited slip. Toyota has provided 4 differential types in pickups and 4Runners -- the 8" standard, the 7.5", the 8" V6/Turbo, and a new one in the Tacoma and third-generation (96 . get a 2x4 and jack it up right on the diff. If the other wheel spins in the opposite direction, you have an open differential. Figure 3. Doesn't mean it will act like a spool under all conditions. If one turns and the other does not, or it turns in the opposite direction then the posi is not present or is not working. lift the rear of the car and turn one of the rear wheels by hand. Can you tell from the VIN if the vehicle is equipped with a limited slip differential? When slip begins, the limited-slip lock-up is either via a complex geartrain, a clutch pack, or a viscous fluid. My dealership added the limited slip differential additive when I had the differential fluid changed, but as far as I know my 2013 2LT RS with Automatic transmission does not have a limited slip differential according to the new car paperwork, and all other research I have done. #12. Mustangs, F150's and other Fords can have their axle ratio easily identified by reading the sticker on the inside of the driver's side door jamb. Posi is a brand name. only the FX4's have the limited slip rears. Limited slip differentials provide your vehicle with the best traction around. Antares Limited-slip axles transfer power to both wheels, yet allow the wheels to turn at different speeds when turning corners. The bottom line begins with the ratio being the first set of numbers. Trac Pack option does not give you limited slip. Servicing with the wrong type of fluid results in vibration and chatter. among conversations on the forums or at car shows. How do I know if my Jeep has limited slip? I'll refrain from making comments about short wheelbase cars and oversteer, as everybody's heard them. Rotate either rear wheel. Right now, I don't have any jacks with me. If the wheel on the opposite side spins the same way then you have a Limited Slip Differential (LSD) - assuming the differential is of course working! Will a JK Dana 44 fit in a TJ? The one tire on mud an one on pavement trick probably won't tell you . This expense is going to be passed onto the buyer. I am looking at a 2004 Crown Vic Interceptor at a Ford dealership. I do not plan on racing the 2.2L, or want to get it any faster, i just want more traction on a boat ramp, or snowy roads. That site also has my truck listed as being a White truck. two ways to check.. one get under and check the diff, it might say something about it being lsd, secondly if you get the rear end up, turn one wheel, and if the other spins the same way , you have lsd, if it spins opposite, its not.. i think (depending on what yearand auto or manual) most 325's came with a 3.15 diff with a 25% lsd. According to my build sheet for my VIN I have the 3.2 DIFF but it doesn't say Limited Slip on the sheet? It also means less wear on tires due to loss of traction. I thought I remember reading somebody bought a T/A 392 8 spd and it did not have a limited slip. You may have heard the terms open diff, open differential, limited slip differential, LSD, locking diff, etc. Home. The term "Non Limited Slip Differential" is Ford's way of telling you that your differential isn't special. Rawhyde. If the other wheel spins in the opposite direction, you have an open differential. Only the Sport TRD had that diff, before 2009. This video shows you how to tell if your rear wheel drive car or truck has a limited slip differential, and also what gears it has. If you buy an 8spd Scat Pack does it come with a limited slip or is it an option. Conversely if each wheel has vastly different traction surfaces, one will slip even if you have a perfectly working limited slip, such as mine did today with one tire in the snow, and one on the pavement. 2,000RPM in OD will be about 68-72 mph. In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC . These are typically found on sports cars and higher end luxury cars. The most common i have seen. Reply. So, my question is, for all of you wise and good-looking people, is the limited-slip . I have RUF 10 inch rears with 255/40's and the ride is quiet with the limited slip. If they both move in the same direction, the posi is working. Floor it for 2 seconds. Step 1. If you have a question about your specific application, email us, and we will get back to you with a recommendation. This post is going to go over the basic concepts of open differentials vs limited slip differentials without getting into the details of how they work. Oct 25, 2009. It was a pricey option though, and I am under the impression that it didn't sell well. Limited slip is just that: "limited" slip. The easy way to tell the difference is to raise and support the drive wheels with the engine out of gear. Limited Slip Differential. A limited slip differential is a mechanical traction device that prevents the wheels from spinning at drastically different speeds. Differential Identification. If it consistently leaves two black marks, it's got LSD. But if it says quadratrack you don't.. But it's not always guaranteed that they will know if it had the limited-slip differential option. Hello. Spin one of the tires with your hand. You will need to fabricate an adapter to allow your torque wrench to line up with the center of the wheel bolt pat-tern. Electronic limited slip is via the VSC system. On the locking differential I have had the locking mechanism come apart from to much torque and trash the rearend. One common technique to identify differential ring gear diameters is cover - cover gasket shapes, to help you we have provided a list of possibilities . In normal driving conditions, an LSD allows the vehicle to operate like an open differential. How to tell if I have the G80 Limited Slip? How to tell if your Miata has a limited-slip differential: Call Mazda Customer Service 1 (800) 222-5500. If the axle code on the door sticker has a letter then a number it is limited slip, if it's two numbers it is an open differential. Limited slip is just that: "limited" slip. A switch will be present on the dash, usually to the left of the 4WD selector. 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