This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. . Find the torque thats on it before hand and tighten it down to that afterwards. First I measured the old crush sleeve as a starting point. It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. It also has an inner diameter of 1 . . 6 TO 10. On the other hand, reducing the size of the pinion or increasing the size of spur gear will result in decreased top speed but with an increase in acceleration. Some of the most popular GM vehicles have come with 10-bolt rear ends. Rotate the pinion when tightening the nut to seat the bearings evenly. Gear oil is nasty stuff, mostly in smell. The closer the teeth count is between the two gears, the higher the speed output will be; conversely, if there is a greater difference in tooth count, then more torque will be generated. 9 Minutes Read / This strength comes from its larger pinion shaft diameter which measures 1.625 inches with 30 splines, 13 percent larger than the 1.438 inch diameter and 25 spline pinion shaft found on a 10-bolt axle. .006" to .010" 120 ft-lbs. . It was in the 30-35 I "think" from GM. The trick is to get it tight as possible without crushing the sleeve any more then it already is crushed. Tighten nut until it takes 15-20 inch lbs of torque to rotate the pinion bearings: None: Self Locking Nut . We are available to help Monday thru Friday from 8 AM to 5 PM Pacific Standard Time, and most orders placed by 4 PM ship out the SAME DAY! sny 00235 converted stock 4L60E on 5th filter/fluid change; 2nd set of drive shaft u . **Note the Pinion nut is in INCH pounds Ring Gear Bolts = 55 lb. Try our Differential Gear Calculator. CRAWLPEDIA Off-Road Encyclopedia. Both axles use a third member that contains the differential, which is made up of the . It is important to have the right pinion nut for your 8.5-inch 10-bolt rearend. With proper maintenance, this rearend will hold up over time and ensure that your vehicle runs smoothly no matter what sort of conditions you put it in. Some vehicles require an 8.5" 10-bolt pinion nut to secure the rear axle assembly of their vehicle. If it takes a 1/2-inch wrench to remove it, its an 8.2. Thanks Mike, Id appreciate it. Inside, the ring-gear bolts are the same as the 8.5 corporate unit, but the pinion-shaft diameter measures 1.438 inches. JavaScript is disabled. This sleeve must be replaced every time the pinion nut is torqued. The pinion nut should then be secured and tightened until there is no bearing play at all. While deciding on the ideal gear ratio for your bike, it's important to consider that a lower value will provide more comfortable pedaling, as you'll be able to spin the pedals at a higher cadence. 1989 Toyota Pickup/3vze/R150F/Dual RF1A's/8.0 Detroit/8.0 Detroit/5" SAS/38 TSL'S. 9 Minutes Read / Chrysler 300 and Dodge Charger 2006-2008 Torque Specifications Repair Guide. 3/8" x all lengths 45-50 ft lb. Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. Once you give everything a thorough inspection you can begin the re-assembly process. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. when assembling the pinion into place, include the crush sleeve between the two pinion bearings. For a better experience, please enable JavaScript in your browser before proceeding. Data is accurate to the best of our knowledge and is offered as-is with no guarantee. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. 14 bolts and 10 bolts are different, not sure about changing seals though. What happens if you have too much backlash in differential. tighten the nut down till its snug and put on your torque wrench and turn it about 3 revolutions. Crankshaft Pulley to Crankshaft bolt 77. When a very slight increase in pinion turning effort is noted, check the pinion rotating torque using an inch-pound torque wrench. Backlash refers to the distance between two mating gear teeth when they are not engaged. Too much won't hurt anything other than break the bolt. Good luck finding one of these, however, as they are very popular among performance enthusiasts. 5 - 8 : Ring Gear Bolt Torque (Foot lbs) 120 : Bearing Cap Torque (Foot lbs) 135 : Pinion Nut Torque: Tighten as necessary to obtain correct preload: Pinion Bearing Retainer Torque (Foot lbs) :65 : . Are all GM 10 bolts the same? When it comes to suspension, preload is an important factor. 2 ways. Whats The Reason Enthusiasts Cant Get, Yes I Am A Dinosaur, And Why I Feel Electric Cars, Rare Rides: The 1969 Chevrolet Camaro COPO, SPEC Clutches: For That Next Engine Swap Or OEM Upgrade, Shop Tour: Brian Tooley Racing Expands To Be A One-Stop Shop, Moroso Anti-Roll Kit Is The Right Tool For The Dragstrip, Why You Need A Proper Fuel Tank Vent In Your Ride, Fenix Is A Next-Gen 69 Camaro With 1,180 Horsepower. How Much Hp Can Stock 5.3 Injectors Handle, What Kind Of Gas Does A Jeep Cherokee Take, Popping Noise When Accelerating And Braking. This ring and pinion install kit comes with new pinion bearings, carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. Is a GM 10 Bolt rear end good? Edit: This difference can cause issues with accuracy and repeatability in some applications, necessitating either higher-end components or additional compensation mechanisms. Most 8.5-inch 10-bolt rearends have two extruded, cast-in lugs on the bottom of the differential housing at the 5:00 and 7:00 positions. 440-500 lbs ft and I wouldn't tackle it bring it somewhere where they know what they are doing..I have a four foot torque wrench that goes to 500 but thats one hell of a grunt and you have to hold the flange while doing this. 24-32 INCH pounds?? We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. This process helps increase longevity of both the pinion gear and its tapered bearings while also providing optimal performance from both components at all times. Some builders . 14 TO 19. Crankshaft Pulley to Hub Bolts 37. While the 8.5-inch rearend was used on vehicles up to 1999, The 8.6-inch (8.625) was used on 2000 and later-year trucks. Not sure the torque specs on the carrier bearing caps, we red lock-tight them and hit them with the impact pretty hard at work. On the other hand, if your backlash is too wide you will need to adjust by moving the carrier towards the pinion with a similar measurement technique. Maintaining your car's paint finish is essential to keep it looking great. There is no way to happiness.happiness is the way. Mikz86TA. . For bearings that are already in use, set preload at 15 inch-pounds; if they are new bearings then you should aim for 25 inch-pounds when setting preload. The reason why it's so hard to turn the pinion nut is because not only are you crushing the crush collar but you're also pressing the outer pinion bearing onto the pinion gear. In either case, it is important that this critical adjustment be performed correctly in order to avoid costly repairs or replacements down the line. With its strong construction and corrosion resistant coating, the PYN10 provides reliable performance for years to come, making it one of the best choices you can make when securing your vehicle's rear axle assembly. New bearings 19 to 22 inch pounds. On top of that, many pickup owners find that making such modifications also provides them with a greater sense of control over their vehicles capabilities, allowing them to feel more confident and secure on their journey no matter what lies ahead on Oct 5 2022. Since listing them all within this article is impossible, well be focusing only on visual identification. Originally, gear ratios ranged from 2.41 through 4.10. West Coast Differentials has been distributing quality differential and axle parts since 1982. In this context, "hardest gear" refers to the ratio of front sprocket teeth to rear sprocket teeth - typically expressed as 4.55:1. Whilethe 10-bolt rearendslineage can be identified by the code stamps, which are usually on the passengers side axle tube, there are literally hundreds ofpotential codes for the three different 10-bolt rearend housings. Continue tightening the pinion nut to collapse the spacer and preload the bearings. carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. The "feel" people are way more experienced that you or I so the top one is re-commended. Once properly secured in place, you should have no further issues with your pinion nut installation. When in doubt, refer back to step #6 for more information about suggested torque specs for your particular axle installation project. Reply Quote. Order our high performance synthetic oil and friction additive combo kit at time of order for ring and pinion or bearing overhaul kit and pay only $49.95 plus S&H, a $54.00 value. Replace original worn or damaged nuts each time a gear set is changed. One intimidating part for a lot of guys is the rear end. I will attempt to cover the necessary steps in building a differential for a GM 10 bolt rear end with an 8.5/8.6 ring gear. See other Red Line Oil Products that we recommend. Here is my related question at almost 1 a.m. and torn down in driveway need to get to work: There was quite a chance that you have crushed the sleeve beyond the preload spec to make it hard to turn. 1/2" T-bolts - 50 ft lbs. I have a 2001 2500 HD. The GM 8.5" 10 Bolt axle, also known as the GM 8.6" axle or GM 10-Bolt, is available in many front and rear axle . 7.25 12-14: 6-7: 6-10: 55: 50: 8 IFS: 12-15: 6-8: 6-10: 55: 60: 8.25 12-15: 6-8: 6-10: 55: 60: 8.75 - 41 Case: 13-15: 6-8: 6-10: 55: 90: 8.75 - 42 Case: 15-25: 7 . Install left-side adjusting nut lock, washer, and bolt. Pinion Nut FT. LBS. Zach got enlisted by a friend to help rebuild the 7.5" factory 10 Bolt rear in the G-Body Monte that he is working on, so naturally it became a teaching moment. It is well known that altering the gear ratio of a vehicle, whether it be through changing the pinion or spur gear, can have a significant effect on performance. Additionally, this nut features a thread pitch of 11/16 x 20 which allows for easy removal during maintenance periods or when replacing bearings or other components within your axle assembly. GM 8.6" differentials can be installed in a GM 8.5" axle with the proper conversion bearings. If youre building a street car and want to improve performance, we all know the drill. It's not easy, but pushing yourself can be rewarding; after all, with hard work come great rewards! Reports from multiple Chevy Bolt owners confirm that on May 28th, 2021, Chevrolet began taking steps to rectify any potential issues with these cars by paying off the original cost and allowing them to be taken off of the road. When riding a bicycle, the hardest gear available is sometimes necessary for tackling steep climbs and flats alike. Ring and Pinion Ratio Variations - An explanation of why some ring and pinion gear ratios vary. Not sure what to do here but I know I'm looking at a boat load of parts I do not have the money for right now so not sure what the hell I'm going to do. Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. Nut secures driveshaft yoke to pinion gear. checking the pre load with the inch lb torque . Finding a 12-bolt that is affordable, is getting to be anearly impossible endeavor. Take Zach R. for instance. This is a metal spacer, usually made of brass or aluminum, that is used to put tension between the bearings in order to keep them properly spaced and aligned. We started by getting a rebuilt kit from Motive Gear . It was used in different models by all GM divisions with the exception of Cadillac. MOPAR: 8.75" x 1.75" pinion: .090. . Pin. This article is a compilation of information and and specs relating to the venerable GM Corporate 14 Bolt full-floating rear axle - also referred to as the 10.5" (after the size of the ring gear in inches) or just simply the "14b" for short. They say ignorance is bliss but I say it's just damn expensive. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. This versatility makes it a great choice for those who want to take their car from the street to the track without worrying about its durability. The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. The torque required to seat the nut is very large, possible 200 ft-lbs or more. The Series 3 carriers are good for use with 2.73 and lower gears (numerically higher), so 3.08 and 3.73 gears work well. If you installed a new seal, add 1 or 2 in-oz. PINION NUT GM 7.5 8.5. CAP TORQUE. 8-10 ft lbs: None: None: GM 12 Bolt Car: Torque: Lubricant: Thread Locker: Main Caps: OEM Housing: . That way, you dont unknowingly spend money on something you really do not want. Constructed from high quality steel, the PYN10 features an integral washer design that ensures proper alignment of the bearing preload during installation and prevents damage to both the yoke and bearings. Allstar Pinion Nut GM 7.5 8.5 ALL72156. Usually, when people are discussing gear ratios, theyre referring to the relationship between a pinion gear and a spur gear. The more torque produced, the less energy needed to move the car forward. This technology is particularly advantageous in improving vehicle handling and traction under all types of driving conditions, from wet roadways to tight turns. The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. The correct way to do this is to use the yoke lock (part of the setup tool kit we bought) and use a breaker bar with a cheater pipe. Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. To ensure optimal performance in any application, it is essential to pay close attention to the amount of backlash between gears on all differentials. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. It has to be drained to get a peak inside. Copyright 2023 Sierra Gear & Axle - Web Design by Zenxeon Technologies, Backlash for Aftermarket gears .006 -.012, Instructions Differential Installation & Setup, Differential Setup & Torque Specifications, GM RPO Codes Axle & Ratio Identification, Measurement Axle Shaft Length & Bolt Circle. Skip to main content. Talk to the experts. Speedway also offers the Economy Ring & Pinion Setup Tool we needed. Looking for a driveshaft for your 67-72 C10? Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more! We think top-notch customer service is the most important thing we do. Known alternatively as the GM 8.875-inch (referring to its ring gear diameter), Chevrolet's 12-bolt rear end is one of the most celebrated in the American hot-rodding scene. Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. I need the torque on the pinion nut for the rear differential. if it is under twents hold the yoke with a pipe wrench and tighten just a little at at time till the torque wrench reads a constant 20 inch pounds for the revolutions. The control arm-mounting ears on top of this 7.5 rearend denotes it is usable for any 1978-88 GM A or G-body intermediate like a Cutlass, Monte Carlo, El Camino, Malibu, Regal, or Grand Prix. Many times when you are rebuilding an existing rear end you want to save the original pinion bearing shim and re use it under the new bearing. Save Share. While adjusting preload can provide some relief from overly-stiff or soft springs, ultimately you should replace the springs themselves if they dont provide the desired level of performance. The distinction between these two types of torque can be useful for assessing how well a car will perform in different situations: cars with higher levels of low-end torque are typically better suited for starting from standstill or accelerating quickly; whereas cars with greater amounts of high-end torque are likely more suitable for reaching faster top speeds over long distances. The most current parts and application information can always be found here on our website or by calling one of our differential parts experts. RING GEAR TORQUE FOOR LBS. How do you fix a loose pinion bearing preload? Is a GM 10 bolt rear end good? (Note: The 7.5 GM rear used different pinion bearings in 1979-80 vs. the 81-up axles, so you want to make sure that the old bearings match up to your new pinion bearings). Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility. The pinion diameter is 1.438 inches, and has 25 splines. I used an 1/4" inch-lb torque wrench with two adapters and a 1 1/16" socket to check the preload. Oct 20, 2011. for new bearings. Use the blue medium strength on the retaining bolt and the red on the others. Differential Locker Comparison - A detailed comparison of popular differentials and lockers. What is the gear ratio on a 10 bolt rear end? Search Car Torque Specifications by Engine or Model without any detrimental effects occurring. #5. It said you want this to be from 5-35. Over 6,000 Automotive Torque Specs. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. You will need to know that there are different series of differentials (seriestwo and three). Lighter and more efficient than its Ford 9-inch and Dana 60 rivals, the 12-bolt enjoys as much use amongst brand-loyal off-roaders as it . I have seen street 12 bolts that . EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. With the pinion bearing properly lubricated, increase or decrease . Randy Bolig has been working on cars and has been involved in the hobby ever since he bought his first car when he was only 14 years old. Unfortunately, unless you have the two units side by side, it is nearly impossible to tell them apart. You keep on tightening the pinion nut until you are within the in-lb. In addition, if the sleeve is over-crushed during installation then it must also be discarded and replaced with a new one as crushing it too much can cause damage to other components within your transmission. This applies to all types of vehicles with any type of gearing system regardless of pitch or size it doesnt matter which one you change as long as you can adjust it accordingly. The concept of low-end torque is an important one for drivers to understand when it comes to the performance of a vehicle. Another way to tell the difference between an 8.2 and an 8.5 rearend is to pull the cover and look at the bolt holding the spider gear crosspin. We will safeguard your e-mail and only send content you request. TORQUE-TENSION REFERENCE GUIDE Printed in U.S.A. Supply Part Number: 9702365 AS 06/14 Torque Poster . Next, attach the pinion nut onto the end of the shaft and use a torque wrench to tighten it to between 110-125 ft/lbs of torque. GM 8.5 10 bolt - 10 bolt cover with 8.5 ring gear. I then assembled the pinion, inner bearing, shim pack in the carrier then pressed on the outer bearing using a 20 t press then installed the yoke washer and nut. The small torque . After it has been properly crushed (by checking the rotating resistance of 19-22 inch pounds on the pinion) there should be at least 150 pounds torque on the pinion nut (or else you pull it apart get another crush sleeve and start over). Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. The 8.2-inch 10-bolt has a smooth, round, lower-case area (no cast-in protrusions), with an 11-inch cover that has a diagonalprotrusion at the top.