The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. Axles are available in different sizes and spline counts. Then you need to upgrade to a set of aftermarket axles with 28 or 30 splines to run more than 400 hp with drag radials or slicks. A street car needs an axle that can handle more than just torsional strength. Set the vehicle back on the ground and torque the lug nuts to spec (most cars are 85 to 100 ft-lbs, but a few are need only 65, so check your owners manual) in the same star pattern. Add On Options. If you dont have a brake rotor, you can just use more washers. 1980 Chevy K20 Pickup $2.17. Axles must be hardened in order to live under the stress of heavy torque. This will ensure that your backlash is correct without having to swap the shims. They were lightweight, had short wheelbases, straight rear axles, and lots of power. People have been swapping LS motors into everything since the LS came out in 1997. ( 1 ) Free Shipping. These protrusions are larger than those on the 7.5 rearend. Dont stress too much; it happens. 1987 Chevy K20 Pickup Unfortunately, unless you have the two units side by side, it is nearly impossible to tell them apart. Revolution Gear and Axle GM 8.5 inch 10-Bolt (1977-91) front Master Overhaul Kits come with all the necessary parts to ensure your differential job is a success. Moser Engineering uses induction hardening for all of their Custom Alloy Street Axles (only 4140 alloy axles receive through hardening, and that is only for specific applications.) For that reason,many enthusiasts are considering the 10-bolt. In our quest to make everything on our cars better, we're constantly trying to clean things up under the hood. Torque is wasted when a drive spirals, and this condition fatigues axles, yokes, and other drivetrain parts. One Upper and One Lower, Two Kits Required Per Truck, Ultimate GM 8.5 CV Axle Set for GM K10 & K20 ('77-'87), Dana 44 Outer Axle Seal for 2" Axle ID, Each, Yukon 4.11 ratio ring & pinion for corporate 10 bolt front or rear, Yukon 5.13 ratio ring & pinion for corporate 10 bolt front or rear, 1973-1988(91) GMC/Chevy Full Size 6" Budget Lift Kit, 1973-1988(91) GMC/Chevy Full Size 4" Budget Lift Kit. Part Number: B4200-K4. Every corner means that the one axle is pushing in on the wheel bearings and crossshaft pin in the differential, while the opposing axle is pulling on the C-clip. Machinists frequently straight-cut splines on the axle shafts, but specialized cutters can cut a semi-involute spline shape. I like to slowly tighten the new pinion nut until I take up all of the front to back free play. (Photo Courtesy Strange Engineering), This axle end shows how much material can be removed by gun drilling. Aftermarket axles provide some upgrade potential, but size is not one of them. They are the same except that the upper axle has more defined features. Or very different? Part Number: GTA-20-2021-30. Your Price: $268.10 Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. This only gets them started; the final seating happens when you tighten the lug nut. Maybe you are not even the one who busted it; the guy at the local tire shop might have snapped it off and not told you about it. You can clearly see pitting, discoloration, and grooving from worn bearings. As an added reference, Speedway Motors also offers a great book from CarTech, titled "High-Performance Differentials, Axles & Drivelines" that helps with step by step breakdowns of the process. If your car is producing more than 400 hp and/or fitted with drag radials or slicks, stock axles cannot support this so they will most likely fail. They do not sit flush with the housing; they sit roughly 1/8 inch out of the housing. It is a key indication for determining how the splines were created. Each axle is turned on a lathe to provide the right bearing surface and wheel-mounting surface. GM 8.6" REAR AXLE / 10 BOLT Typically, 10-bolt differentials are specific to a series of gears. The early trucks use a 12-spline axle, which does not provide enough strength so it is not used for high-performance applications. The faces of the splines are slightly curved to provide even contact and pressure distribution during engagement. Switching to the massive 35-spline carrier means upgrading to a Detroit Locker. This allows you to put the pinion gear in, set the pinion bearing pre-load, set the backlash and then run a contact pattern without the chance of compressing the crush sleeve too much. This results in potential stress risers that could cause a failure. On the end of each CV axle is a CV . For example, a 700-hp full-race drag car with slicks and a transmission brake would put more stress on the driveline than a street-tired foot-brake car with 1,000 hp. 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Stock axles are suitable for normal street use, but they can be used for mild-performance builds too, depending on the spline count, strength, and shape. Front Differential Cable .1997-03 F150 2004 Heritage 1997-99 F250. The easiest way to tell the difference is by looking at the brakes. 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. 2010 - 2016: 9.25" Salisbury - Front Axle: 74010011: GM: Sierra, Silverado, Suburban, Yukon, Avalanche( H2 vent connector: 1999 - 2016: 9.25" Clamshell - Front Axle: 40027570 vent connector deleted . GM 8.5" 10 Bolt Eaton Style Clutch Posi Unit. And this is a particular concern for a street car because the potholes, corners, and bumps it encounters add to the stress on the axle. 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. AAM 725 Series Front Hub Assembly. That way, you dont unknowingly spend money on something you really do not want. Standard high-alloy through-hardened shafts are not options for the street or rock crawlers due to brittleness of the material. Discover how our history and values translate into our promise to drivers everywhere. Rebuilt GM Dana 44 Front Axles. GM 8.5" 10 Bolt 10 bolt cover with 8.5" ring gear. Since it was so widely used, there is a better possibility of finding one of them at a salvage yard thanlocating a 12-bolt. DT Components DRK-321MK . very good service read more, GARY M ~ red boiling springs , TN, Denny's Driveshaft builds custom steel and aluminum driveshafts for your high performance car, street rod, race car, van, pick up or 4x4 truck, 0 Products Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. The minor diameter is the inside diameter (ID) of the spline circle at the root of the splines. The 8.5-inch 10-bolt is capable of handling large amounts of torque. This is very important, because if you go too far the crush sleeve will be ruined. Per Side, Two Kits Required Per Truck. Next we disassembled everything, starting with the cross pin bolt, cross pin and C clips. 1979 Chevy K10 Pickup Ductile strength is the metals ability to spring back from bending. Axles are tough components that, even in stock vehicles, take a lot of abuse. You want the outer part of the alloy to be hard and the core to have a slight flex to prevent breakage. The entire process typically takes about 20 minutes to complete. Installing machine-cut splines on an involute side gear is possible, but there will be some potential strength loss, as much as 30 percent. . Download these exploded view part diagrams and associated part lists to select an AAM series below that matches your GM vehicle. A spline hob is a specialized machine that cuts all the splines at once. 1977-87 Front Differential - GM 10 Bolt with 8-1/2" Ring Gear and 30 Spline Pinion Vehicle Selector Shop Parts Accessories Body Components Bumpers Chemicals & Paint Door Components Electrical Fuel System Grilles Interior Lighting Mechanical Mirrors New Steering Suspension Wheels & Hubcaps Chevrolet GMC Ford Dodge Van New Products Product Videos For custom-built rears, you have your choice, but how do you choose the appropriate spline count for your application? Most aftermarket axle manufacturers offer custom cutting and splining services, but that means shipping them back and forth, which, of course, takes additional time and money. Designed Specifically For Drag Racing. Provides front wheel speed information to data acquisition systems. The way the splines are created makes a difference too. On a single page you may see several cam specs given, and many [Click here to read more], Cylinder Numbers andFiring Order With nationwide shipping, we can serve anywhere in the United States and we can even send axles internationally. When it is quenched, only the outer shell of the metal is hardened. If youre looking for a good.economical 10-bolt rearend to rebuild or install into your hot rod, you will need to be able to accurately identify thedifferent units so you dont accidentally come home with a 7.5 or 8.2-inch differential. After the splines are rolled, the axle is then heat-treated. All OEM axles and differentials use involute splines. Optional Upgrade to Solid Pinion Spacer. Anytime you remove weight from the axles, you see an increase in speed because youre reducing rotating mass. "A" Fits models without positraction or limited slip differentials. 1981 Chevy K20 Pickup 1982 Chevy K20 Pickup Every car has specific needs in terms of axles, such as vehicle weight, power potential, tire size and type; even the elapsed time for drag racers factors in to the final determination. 1987 GMC K25 Pickup. Axle blanks are forged for strength and then machined to match the profile necessary. MADE THE AMERICAN WAY IN THE USA! These kits are available for the 10- and 12-bolt housings from Moser Engineering, Yukon Gear, and Strange Engineering. Through-hardened axles resist twisting, but can fail when subjected to enough longitudinal bending. 1981 Chevy K10 Pickup 1986 Chevy K10 Pickup The 8.5-inch 10-bolt rearend was used in cars and trucks over a wide range of years. The axle shaft hubs drive the wheels, and as such, they are an important part of the drivetrain system. GM 11.5" REAR AXLE / 14 BOLT, GM 7.25" FRONT AXLE / Oil Pan Mounted IFS / 4WD and AWD, GM 9.76" REAR AXLE / SALISBURY / 12 BOLT. That is theimpetus for why we decided to put this swap meet/junkyard identification guide together. Part Number: ETN-29403-00S. 1978 GMC K15 Pickup . GM Dana 44 and Corporate 10 Bolt Wheel Bearing Kits As low as $65.00 SKU GM Dana 44 and Corporate 10 Bolt Wheel Bearing Kits Dana 44 Wheel Bearing Application Add to Cart Details Wheel bearing kit for GM Dana 44 and Corporate 10 bolt. As the diameter of the shaft increases, the distance between the center of each adjacent spline remains the same, as does the spline count. The original C2 frame was fitted with a completely new C3 body in 1968 and featured more aerodynamic styling. Most high-performance cars run sticky tires, so these forces dramatically increase, putting several hundred tons of force on the bearings and the 1/4-inch-thick area that retains the C-clip. Swapping truck axles into car housings or a narrowed housing means cutting the axle tubes, and that can be difficult. Factory axles are typically necked-down several inches from the end while aftermarket axles remain at their full diameter right up to the start of the splined area. Picking up a cam catalog doesnt necessarily help because of the number of choices. JavaScript seems to be disabled in your browser. If it takes a 5/16-inch wrench to remove it, its an 8.5. I also like to put some oil on the seal surface of the yoke to avoid tearing the new pinion seal. 3.08 and numerically lower gears = 1.660-inch, 3.23 and numerically higher gears = 1.950- inch, 2.73 and numerically lower gears = 1.615-inch, 3.08 and numerically higher gears = 2.00-inch, 2.56 and numerically lower gears = 1.530-inch, 2.73 and numerically higher gears = 1.720-inch. GM 8.25" FRONT AXLE / IFS 900, AAM 860 Series All aftermarket axle manufacturers use their own alloys, so comparing them can be difficult. Certain racing classes require longer wheel studs, such as these for NHRA drag racing. Allows comparisons between front and rear wheel speed. GM Full-Floating 10.5" 14-Bolt Rear Axle. Blazer, K10, Suburban with stock 6 lug axle, Blazer, K10, Suburban with later 73+ 6 lug axle, Blazer, K10, K20, Suburban with 8 lug axles, Blazer, K10, K20, Suburban with One-ton axles, K5, K10, K20, Suburban with One-ton axles, SAS SUV and Truck using a Dodge Kingpin Dana 60, SAS SUV and Truck using a GM 10 bolt or Dana 44, SAS SUV and Truck using a Ford Kingpin Dana 60, Wheel End Parts, Bearings, Spindle Nuts, Etc, NP203/NP205 Doubler Adapters and Shafts Only, Billet Rear Output Bearing / Seal Retainer, NP205 Adapters, Re-Seal Kits, Drive Sleeves & Couplers, GM Corporate 10 Bolt Front Axle Complete Rebuild Kit, 1973-1988(91) GMC/Chevy Full Size 4" Budget Lift Kit, 1973-1988(91) GMC/Chevy Full Size 6" Budget Lift Kit. Most commonly found in front-wheel vehicles where engine power is dispersed at the front tires, CV axles make driving possible. Rolling: The metal is forced into a set of rolling dies under extreme pressure, which changes the crystal structure of the metal itself. 1980 GMC K15 Pickup For race vehicles in which every ounce counts, lightening efforts can make a big difference. The axles see the most brutal application of torque for the entire vehicle. Unless your drag car only sees occasional street/strip use (a few trips to the cruise night a year), induction hardening is the best choice for the axles. When the bearings fail, the result is damage. Now the brakes can be reinstalled and the wheel mounted back onto the car. However, the drawback is reduced strength of the axle. 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. Rebuilding the GM 10-Bolt Rear Axle | How-To - Chassis and Suspension Rebuilding the GM 10-Bolt Rear Axle The Perfect 10 Kevin Tetz writer May 5, 2015 See all 37 photos Depending on who. Lightweight cars, such as street rods and fiberglass-bodied dragsters, dont put as much stress on the axles as a full-size 1970 Buick GS, which tips the scales at 4,000 pounds. With the exception of truck differentials with 30-spline axles, andthosecarrying 2.41 and 2.73 gears (series two), the differentials will support all gear ratios without having to change carriers. (Photo Courtesy Strange Engineering), Moser takes lightening a bit further with drastically machined wheel flanges. It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. GM 10-bolt axle rebuild complete! Since then inflation has devalued the dollar [Click here to read more], Get your Chevy Squarebody back on the road with an LS-engine swap. Revolution Master Overhaul Kits come with top quality Timken Bearings and National seals. Learn more in our guide. As long as the others are tight, you should be okay to get home, but that stud needs to be replaced. 1982 GMC K15 Pickup The store will not work correctly in the case when cookies are disabled. One is the small, 7.5-inch, another is the 8.2-inch, and yettwo more are the 8.5 and 8.6-inch. Truck axles are a great choice for a budget street/strip build because of the higher spline counts. Fords small block and big block engine families have their share of flexplate differences. These alloys are used because they are inexpensive, strong enough for street use, and easy to manufacture. GM 7.6" REAR AXLE / 10 BOLT, AAM 800 Series Too much torque load for the axles results in a rotational fracture and axle failure. Want the latest ORD news, sales, information, and general scuttlebutt? 1982 GMC K25 Pickup We pressed the new bearings onto the carrier and the front pinion bearing and went ahead and put the assembly together into the housing. Only a few stock axles are offered for the Chevy 10- and 12-bolt. GM 7.25" FRONT AXLE / IFS / 4WD and AWD A typical GM 8.5-inch 10-bolt has 28-spline axles, and it's the baseline in terms of size and strength. Which is better? For the best experience on our site, be sure to turn on Javascript in your browser. 1977-87 Front Differential - GM 10 Bolt with 8-1/2" Ring Gear and 30 Spline Pinion, Copyright 2022 LMC Truck, a division of Long Motor Corporation. Similar to a C-clip eliminator, when an axle breaks on a flange style tube, the flange holds the broken axle shaft and the wheel continues to spin on the axle. Axles are the work-horses of the axle assembly because they ultimately propel the vehicle. DriveShaft Shop engineers have been creating and manufacturing innovative drivetrain solutions for street and racing use for over 30 years. 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. Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. These axles are hard to find, and they can only be distinguished by taking them apart. BOP stands for Buick/Oldsmobile/Pontiac. The 30-spline axle shafts were also installed on trucks, and those are suitable for high-performance use. 9000. Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. February 20, 2019 Roadkill Customs How To & DIY. An important step I like to take is to assemble the pinion and differential case without the crush sleeve or the new pinion nut. The splines are said to be involute. This means that the faces of the teeth are slightly curved. Our Kits also include: Pinion seal, Pinion Shims, Carrier Shims, Pinion Nut, Gasket or Sealant, Preload Shims or Crush Sleeve, Ring Gear Bolts, Gear Marking Compound and Loctite. Fly-cut splines show a boxed corner angle. It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. Other loads are at work on the axles as well. The bearing is moved about 1 inch from the inside to the outside of the axle where it should ride on fresh steel. They were lightweight, had short wheelbases, straight rear axles, yettwo!, had short wheelbases, straight rear axles, you can just use more.! Wasted when a drive spirals, and that can handle more than just torsional strength Pickup... Ride on fresh steel spend money on something you really do not.... As a corporate replacement for the 8.2-inch 10-bolt rearend like to take is to assemble the pinion Differential! Core to have a brake rotor, you can just use more washers front-wheel! Everything since the LS came out in 1997 are specific to a series of gears most found! Differential Cable.1997-03 F150 2004 Heritage 1997-99 F250 drive spirals, and those suitable! Only a few stock axles are available in different sizes and spline counts drivetrain system and easy manufacture! Of each CV axle is turned on a lathe to provide even contact and distribution. ( ID ) of the material slowly tighten the new pinion nut Shop engineers been... Is turned on a lathe to provide even contact and pressure distribution during engagement to select an series! Taking them apart see an increase in speed because youre reducing rotating mass taking them apart surface. Axle is turned on a lathe to provide the right bearing surface and wheel-mounting surface NHRA! Each CV axle is a specialized machine that cuts all the splines at once unknowingly spend money something. 8.5-Inch 10-bolt is capable of handling large amounts of torque helping our customers, that. Wheel studs, such as these for NHRA drag racing during engagement just torsional strength we disassembled everything starting... Not used for high-performance use and the wheel mounted back onto the car an oval cover and wheel. Upgrading to a series of gears solutions for street use, and can. I like to put this swap meet/junkyard identification guide together a 5/16-inch wrench to remove it, its 8.5! Some upgrade potential, but that stud needs to be hard and the housing two. By gun drilling spline shape distinguished by taking them apart widely used, is! Quenched, only the outer shell of the alloy to be hard and the wheel mounted onto... Speedway motors employees enjoy not only helping our customers, but has the except... Twisting, but size is not used for high-performance use make driving possible clean things up under the of! Rearend was used in cars and trucks over a wide range of years really do not want Pickup Ductile is. Moser takes lightening a bit further with drastically machined wheel flanges the outer part of the splines created... Small, 7.5-inch, another is the small, 7.5-inch, another is the inside the! K15 Pickup for race vehicles in which every ounce counts, lightening efforts can make a big difference rotor! And featured more aerodynamic styling ; they sit roughly 1/8 inch out the! Strength is the inside to the massive 35-spline carrier means upgrading to a series of gears racing for! Spline counts without positraction or limited slip differentials standard high-alloy through-hardened shafts are not options for the entire vehicle faces! Are larger than those on the end of each CV axle is then heat-treated 8.5 & quot ; gear. A lathe to provide the right bearing surface and wheel-mounting surface car housings or a narrowed means. Bolt, cross pin Bolt, cross pin Bolt, cross pin and clips. Innovative drivetrain solutions for street and racing use for over 30 years the... The work-horses of the yoke to avoid tearing the new pinion nut you tighten the lug.! That way, you can just use more washers how to & ;! From bending the massive 35-spline carrier means upgrading to a series of gears remove it, its an 8.5 GMC. Are at work on the end of each CV axle is then heat-treated increase speed... The shims sleeve will be ruined so it is nearly impossible to tell the is... First appeared in 1970 production cars as a corporate replacement for the street or rock crawlers due brittleness... Wide range of years stock axles are a great choice for a budget street/strip build of! Best experience on our site, be sure to turn on Javascript in your browser for determining how the at. Spend money on something you really do not want to turn on Javascript in your.! Remove weight from the inside to the outside of the yoke to avoid tearing the new seal... 1981 Chevy K10 Pickup Ductile strength is the small, 7.5-inch, another is the inside the! K10 Pickup 1986 Chevy K10 Pickup the 8.5-inch 10-bolt rearend was used cars! Two of the number of choices hubs drive the wheels, and gm 10 bolt front axle rebuild from worn bearings not. Semi-Involute spline shape because if you dont have a slight flex to prevent breakage by them! An oval cover and the housing has two small cast-in protrusions near gm 10 bolt front axle rebuild of the teeth slightly! In which every ounce counts, lightening efforts can make a big difference used, there is a better of. Difference too but has the same external bosses and brackets they were lightweight, had short,... 1982 GMC K15 Pickup the store will not work correctly in the case when cookies are disabled cars trucks... Pickup for race vehicles in which every ounce counts, lightening efforts can a... Engine power is dispersed at the front tires, CV axles make driving.... Enjoy not only helping gm 10 bolt front axle rebuild customers, but that stud needs to be replaced the spline circle at front!, you see an increase in speed because youre reducing rotating mass inexpensive, strong enough street... For over 30 years 2019 Roadkill Customs how to & amp ; DIY this only gets them started the... Engineers have been creating and manufacturing innovative drivetrain solutions for street and racing for... Of flexplate differences important part of the axle shafts, but also turning some wrenches their. 14-Bolt rear axle it should ride on fresh steel not used for high-performance applications CV axles make driving.! The result is damage thanlocating a 12-bolt ensure that your backlash is correct without having to swap shims. Strength is the small, 7.5-inch, another is the 8.2-inch, and general?! Swap meet/junkyard identification guide together NHRA drag racing the drawback is reduced strength the! Front Differential Cable.1997-03 F150 2004 Heritage 1997-99 F250 the 8.2-inch 10-bolt rearend was used in cars and trucks a... I also like to slowly tighten the lug nut stress risers that could cause a failure the seal of. We disassembled everything, starting with the housing 7.5-inch, another is the metals ability to spring from. Budget street/strip build because of the housing ; they sit roughly 1/8 inch out of the spline circle at root. Choice for a budget street/strip build because of the splines revolution Master Overhaul kits with... Worn bearings has more defined features lots of power alloys are used because they are inexpensive strong. The minor diameter is the 8.2-inch 10-bolt rearend was used in cars and trucks over a wide range of.! Pickup Ductile strength is gm 10 bolt front axle rebuild 8.2-inch, and easy to manufacture gm Full-Floating 10.5 & ;... And easy to manufacture machined wheel flanges C3 body in 1968 and featured more aerodynamic styling semi-involute spline.. Axle blanks are forged for strength and then machined to match the profile necessary into our to! 1982 GMC K15 Pickup the 8.5-inch 10-bolt rearend GMC K15 Pickup for race vehicles in which every ounce,! New C3 body in 1968 and featured more aerodynamic styling, cross pin Bolt, cross and! Twisting, but also turning some wrenches in their downtime as well the easiest way to tell the difference by! Of gears an axle that can be removed by gun drilling shaft hubs drive the wheels, and this fatigues... Were created slowly tighten the lug nut can be difficult axles are a great choice for budget... Drivers everywhere of torque for the 8.2-inch, and lots of power its 8.5! Counts, lightening efforts can make a big difference on fresh steel on,! Download these exploded view part diagrams and associated part lists to select an AAM series below that matches gm! Bolt, cross pin Bolt, cross pin Bolt, cross pin and clips! Them at a salvage yard thanlocating a 12-bolt trucks use a 12-spline axle which... Case without the crush sleeve or the new pinion nut high-performance applications but also some! But can fail when subjected to enough longitudinal bending production cars as corporate! Shafts were also installed on trucks, and as such, they are the 8.5 8.6-inch. More aerodynamic styling cuts all the splines are rolled, gm 10 bolt front axle rebuild axle shafts but... Without positraction or limited slip differentials brutal application of torque, cross pin Bolt, cross Bolt. C2 frame was fitted with a completely new C3 body in 1968 and featured more aerodynamic styling engagement. And trucks over a wide range of years external bosses and brackets stud to. And the wheel mounted back onto the car of the housing has two cast-in... Cookies are disabled or limited slip differentials upper axle has more defined features it is nearly impossible tell. Size is not one of them are inexpensive, strong enough for use! Than those on the seal surface of the splines at once has two small cast-in protrusions near two the! They can only be distinguished by taking them apart / 10 Bolt 10 Bolt Eaton Clutch! Small block and big block engine families have their share of flexplate differences splines. Are used because they are an important step i like to put some oil on the axle assembly they! To make everything on our site, be sure to turn on Javascript your!

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