If a car has posi traction, it means that the car has a limited slip differential. Posi Traction vs. Limited Slip vs. Locker - JeepForum.com He is trying to figure out what to install on his Camaro. As has been mentioned, the center section IS aluminum and almost always NEVER came with traction-lok or posi-traction. Modern Camaro Forums. The term Positraction describes the mechanism that provides drivers with more traction control of their cars than they get with an open differential. What do these cars come with from the factory? I have a 10-Bolt with 373 posi-traction gears that came out of a 1972 Chevelle SS. ALL 1984+ V8 Mustangs come standard with A limited slip differential. Which is better limited slip or locking differential? This is what came out in these year vehicles from the factory if they had a posi track differential. Posi (short for posi-traction) is an option that is not specific to amount of bolts (ie. 2wd truck. So the term POSI is a brand name..like NOS is nitrous. Traction-Lok was not available ( as-shipped nor as an option ) for any LX Sport ( 2001-8 ). With Ford's 427 and Chrysler hemi, a good running 327 could probably beat it. As for the traction lok / limited slip / equa lok, they all came in both 2 and 4 pinion designs (for the 9") The easiest way to distinguish a traction lok from the others is to look at the "hat" portion of the unit. GM's brand name is "Posi-traction". posi-traction, which have it? I believe '65 was the last 409, as the 396 came out and changed everything. Thanks - Answered by a verified GM Mechanic. Even worse, the replacement rear end came with a low 2.76 ratio. There are a couple different types of rear differentials, open and limited slip. 6 What the difference between a posi and a locker? Come join the discussion about Bimmerfest events, production numbers. Yes, the spool that Dan made is typically what was used by all the dirt track sprit cars running Ford V8 rear end gears in the Hallibrand 201 center sections. or could the guy who owned it before my put it on. do i have posi traction with this car.?? Aug 2, 2005. An old race car with solid posi (by welding some of the gizmos) will have a hard Try coming out of a corner with a lot of throttle in the 951 and you'll light up the. Traction control gets you going from a stop by limiting wheel slip. )General Motors' name for a clutch type limited slip differential. Some facts about the GM G body 8.5" rear axle that was available on select performance G bodies. Although I had old Chevys with posi traction, and they went forward leaving two straight black. What is the difference between posi traction, limited slip, and locker? Search 8.5 10-bolt. As far as gear ratio it can be found on the driver door sticker. -Ford 8" 28 spline trac lok posi unit. Many 'resto-mods' install bigger rear ends with posi-traction, however. This rear end is for sale locally in West Michigan. What you bought is a mini spool, not a "posi", and not a good idea for street use. As for my dad's GTO, we aren't sure if it had Positraction when new, but the factory rear end was blown up at some point in the '80s and the previous owner replaced it with an open differential 10-bolt "BOP" (Buick/Olds/Pontiac) rear end. BUT, probably VERY FEW cars didn't acutally come off of the assembly line with a posi rear until the very end of Dec or very early Jan 57. FordNut - Most, if not all, CV Sport and CVPI have posi. I gave him my 1980 camaro after I had my Posi traction rear end with 3.08 gears installed on the 80. now I purchased a 1978 Camaro and it has Limited Slip. I am wanting my posi traction from his 80. 1968 Chevy Camaro RS, 327 cu in, 4 speed, posi-tractionOriginal RS car with only 44,800 miles. 1998GT. Traction-Lok differentials optimize your vehicle's traction by transferring the power to both rear wheels. F8TL - Ford 8" Inch Trac Lok Posi Unit. From my understanding - the G86 is the limited slip version (not positration but limited slip) - while the G80 (positraction) is the type used in the SS and in my v.h.o. As a matter of fact ALL Sprint Firebirds for 1967 came with factory traction bars. 20 years ago my friend at us gear sent me a print on how to take a 9" traction lock and make it a 8" the left side with posi us gears.After that assembly time then on to the brakes.I will be. The first five digits . Posi traction - I have a 96 town car and the right rear wheel bearing froze doing 80 mph causing bolts to snap and tire to dismount whereas the rear en. Using a 3.90 rear axle gear ratio as an example [2.87 x 3.90 = 11.19], this is on the high side for a high torque engine. And the 10 bolt rear ends had the old one-tire-fire. Lockers- Lock the axle shafts together basically. 1. i have a 2010 SRT8 with 6.1 hemi. They are dangerous! your car has an 8.8" diff with 28 spline axles. But, there are no direct bolt in, factory rear ends that will fit an s-10. If I recalls, the chevy supersport cars of the muscle era had posi if it was a 12-bolt rear end. What other cars will this fit? I want posi traction. It also means that when one drive wheel loses traction, no torque is delivered to the ground, and the vehicle stops moving forward. Your buddy's '65 K-Code Mustang doesn't have Positraction, and likewise neither does that '66 Oldsmobile 4-4-2 you spotted last month. And since the "Limited slip" or Locking rear end (often referred to as a "POSI") came to be a popular option and more plentiful starting in the early 1970's, many of the units found today at car swap meets and shows are the units pulled from trucks with the 31 spline carriers with the "Traction Loc" style posi unit. if you want an unbreakable rear end, buy an. Both are based on computer control of the anti-lock brake system, and in more advanced designs, engine power output. EBAY can be your friend, there are at least eight 8.5" posi traction carriers listed right now, just like there is every week. solution: this is normal your traction control is operating . Finally, all Stage 1 cars came standard with a posi rear. I had people in the back seat asking me if the rear axle was coming apart. The truth is the 8.5-inch 10-bolt is almost as strong as a 12-bolt since its ring-gear diameter is only 0.375 inch smaller than a 12-bolt (8.50 versus 8.375 inches) and the pinion gear shaft is an . yea i think the reg mustang are even posi..deff the gts. No 12 bolts, nor 14 bolt rears will. i just took my car to the track and no matter what i did i lost traction in first gear off the line. I'm actually building a Mk 3.1 with IRS. all it says is you get 13 cars and 14 tracks. Chevy 10 Bolt Posi-traction (Limited Slip) Differential, Rear End, Rearend. Mechanic saying I need the entire rear end replaced. That's a big part of why driving on slippery stuff can feel sketchy, and why . What tranny do you have? (In 67-68, it appears that positraction was not a requirement with the 3.73 ratio for non-Z28 cars.) typically the light is seen when the system intervenes to maintain traction. 1. The first solution for better traction was the clutch-type limited slip or posi-traction differential There is a fully mechanical, low budget "poor man's posi-traction" that is available for the VW Vanagon. Typical pricing is less than $200 (frequently much less) depending on the number of people looking for one each week. Positraction was optional for Z28's with 3.73. Posi traction is good to have when traveling in ice or mud. When I bought my 1969 last summer Pro stocks were running. What cars came with posi traction? 5. And, they are all way too long, and require being shortened. This car came from the manufacturing plant Tuxedo Black with Red interior. Ltd slip and posi traction are not the same, Posi is a GM term, booth axles shafts are drivin at the same time were as with a ltd slip, when one axle shaft slips, it will lock the othier axle shaft. A 3.36 rear axle gear ratio would be more livable [3.36 x 2.87 = 9.64]. Coming to the battle of Limited Slip vs Posi, what is the state of being more or less? So what year cars have a posi rear end that will work with my stock rear end housing etc. I guess you get what you. one your cutting power to get traction, the other you just splitting the With good track prep, you can cut great 60' times with these cars. 4 What does posi track mean? They all came with 3.27 open. the tcs warning light will pop on when the system detects a loss of traction, like in snowy or rainy weather. Since then, Positraction (often shortened to "positrac" or merely "posi") has become a genericized trademark for LSDs. People say Positraction when they talk about limited slip differentials generally. The last of the heavy duty 9" rears were in the 1984 f-150's. as far as the regular 9" I believe all the large cars up to 79. Like said, avoid the Gov (grenade)Lock. That being said, most s-10's came witht he 7.5" rear end. hey I have the same car, it has an open differential not a posi (stands for positraction or lsd). Limited Slip Differentials (LSD) significantly increase the traction and performance of Jeeps, trucks, 44s, and RWD vehicles on the street, at the strip, or on the trail. In other words you can put a posi unit in a 10 or 12 bolt, as long as you have the right posi unit. The car was secured with jackstands before the wheels were taken off. This is the cover with the indentations for the ring gear bolt heads. This is what came out in these year vehicles from the factory if they had a posi track differential. Dodge 9.25 Trac-Lok Differential Posi Carrier Assembly Complete 31 Spline C9.25. The truck will be a 3:50 to 4:11 ratio. May 21, 2007 #3. It came with the 3 speed auto and i put a 400 HP 350 in it and the stock rearend had limited slip , 2.73 gears, 10 bolt, 7 1-2 ring gear. The GT's all come with "traction lock" which you can disable with the button on the dash. A lot of G-body El Camino and Malibu wagon came with a 3.08 posi. If a car has posi traction, it means that the car has a limited slip differential. A lot of P71s have Traction-Lok, however, as RoyLPita noted, you will have to check the door jam sticker | axle tag. Ford called their's Trac-loc or something similar, Chrysler's name A forum community dedicated to BMW owners and enthusiasts. what do you mean "different than the 68 or 5.0 fox" ?.. While Posi acts as the defender of wheel slip to earlier starts. The big block cars came with the 8 with only the high performance options using the 9 Dana that was virtually indestructible. We use cookies to give you the best possible experience on our website. Measures 55" from brake back plate to brake back plate and 62" from drum front to drum front. The majority of Mustangs come equipped with a limited-slip type differential called Traction-Lok from Ford. also with the posi rear u will not be able to turn at all or very little. Whether you need the safety of added traction for daily commuting, recreation, work, or just so your muscle car puts power to the pavement instead of burning one wheel up, the No-Slip Traction System is your answer. The 12 bolts were only available in the older vehicles as s15 said as well. Yes, a 2000 Trans Am does have posi traction. THe cars were usually in the 2 something. 5 What cars came with posi traction? If your 81 has it's stock drive train you probably have a TH350. IP: Logged. Ford's Brand name for it's LSD is "Traction-lok". A limited slip differential maintains traction by "sensing" when one wheel is slipping, locking the wheels together and thereby redirecting greater torque to the non-slipping wheel. If above OK, try programming the EBCM with latest software. Posi traction puts power to both wheels but also allows the rear wheels to turn at different speeds He knows what he's talking about. Come join the discussion about performance, modifications, classifieds, engine swaps, troubleshooting, maintenance, and more! How do I know if I have limited slip or posi? Positraction was available at an additional cost (option G80), and was mandatory on the 4.10, 4.56 and 4.88 ratios. It didnt have "Posi Traction" because it wasent a Chevy. -100% new, not remanufactured. 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. As far as spool vs posi. No matter what kind of car you're driving, power likes to go to whichever drive wheels have the least traction. The muscle cars did NOT have posi traction, they were called sure grips! The No-Slip Traction System is the ideal solution for just about any light truck, sport utility, and muscle car on the road today. A forum community dedicated to 1955, 1956, and 1957 Chevy owners and enthusiasts. Came out of a 1979 Camaro, 2.73 gears, brake shoes, brake lines and emergency brake cables in good shape. If your car left ford with a V8 under the hood, you had an LSD. Adding a posi-traction rearend to your ride can make a positive difference. This is a clutch-style limited slip differential that relies on Pyrolytic carbon friction discs to automatically prevent wheel slip. This is the bread-and-butter of Mustang differentials. Torque output comes in quicker with large cubic inch street and mild engines, while limiting high rpm horsepower. Test each Computer Area Network (CAN) data line at the Yaw and Lateral Accelerometer sensor, Dark Blue pin 3 and Light Blue pin 2. Takes a few hours to replace. It had to be special ordered. This is a genuine Dana Trac-Loc differential for Dodge vehicles with the 8.25 ring gear from 1976-1996 with 27 spline axles. basically when you lifted your car and spun your wheel back it was the pinion of the two axles spinning. While Packard pioneered the LSD under the brand name "Twin Traction" in 1956, the most famous of these was Chevrolet's "Positraction". The serial number of 1969 and 1970 models were GS specific. The actual car . For reference, the Ford car spring (PN E0AZ-4214-A) has a free height of approximately 1.510 inches and a Ford Racing truck or heavy-duty version (PN F3TZ-4214-A) is approximately 1.765 inches. as it will . My original question is "does anyone have any information as to the availability or existence of replacement positraction units for 71-76 RWD full size cadillacs" Greg traction lok=limited slip=posi-traction. Message: does the 2000 4.7 dakota come stock with. When traction control engages on Fixed Dallara P217. It is possible, you just have to know what gear ratio you have in your Sierra. Each wire should have less than 3 volts on it, but each wire should have some voltage on it, approximately 1-2.5 volts. The actual car . It should also fit other era cars (Firebird) with leaf spring rear ends. i have a question for anybody who knows im building a street strip car its a 1972 pontiac ventura II has a straight 6 in it but going to a v8 hopefully 435hp. Once the differential gears align correctly, remove the differential pin and install one of the two S-shaped preload springs that came with your kit. Why spend money on a posi-traction rearend when a limited slip would do pretty much the same job without incurring the expense? So then posi traction is what? basically the driveshaft goes into your differential and spins a big gear with your axle running through it. Fyi-The G80 is a Eaton Locker and is not a posi. I am interested in getting a Positraction or Limited Slip rear end for my 94 4cyl 2wd 5spd S10. Begins right up, shifts smooth and tracks directly. Come join the discussion about restoration, engine swaps, reviews, performance, modifications, classifieds. If only wheel is spinning, that means the clutches in the differential are worn out. The radiation affected me and If I remember correctly, the term "Posi-Traction" is trademarked by Generous Motors and was used to Come join the discussion about specifications, modifications, troubleshooting, maintenance, and more! ANY 57-64 posi center section is a 100% direct bolt-in for a 55-64 axle housing (55-57 axles need about 1/8in shaved off of the splined end). They sometimes won't unlock Posi-Trac is a type of limited slip. He is going to have 330 horses moving his car, Mine will not be near his. They also make a nice upgrade when . 9" diff is completely different and parts will NOT interchange. 6. A GTO for example (66 -67). ok im using the original rear end finding this out its only limited slip i need posi and need th know the gear ratio on this rear end, and how to convert it to posi traction if possable. Many people refer to this as "one wheel drive." The first solution for better traction was the clutch-type limited slip or posi-traction differential, which came into use in the '40s and is still in use today.