163:. Introduced in 1973, this differential employs a full-floating design, boasting a substantial ring gear diameter measuring 10.5 inches (270 mm). Its nomenclature, "14-bolt," represents the 14 bolts securing the differential cover, although the ring gear itself is fastened by 12 bolts. Notably, the 14-bolt differential gained traction among Jeep Wrangler owners seeking axle replacement options, earning the moniker "corporate" 14-bolt because of its association with GM's corporate structure during the 1970s.
254:. Full-size GM vans continued featuring drum brakes for several more years, transitioning entirely to disc brakes by 2003. The original design of the braking system within the 14-bolt differentials accommodated diverse wheel sizes, initially fitting drums suitable for 15-inch wheels and later adapting to cater to the needs of 3/4-ton and 1-ton vehicles. Enthusiasts often opt to convert this section of the axle assembly to disc brakes for enhanced performance and reduced maintenance costs.
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introduced notable improvements. Some models allowed for the removal of the brake drum without requiring hub and axle shaft removal. Additionally, a larger diameter bearing enhanced the durability of the pinion while maintaining its original diameter. Notably, both designs employed a full-floating axle system, bolstering their robustness.
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The pinion is supported both in front of and behind the pinion teeth, an arrangement often referred to as "straddle mounting." Straddle mounting greatly reduces pinion deflection under high torque loads, conferring increased longevity and torque capacity. The pinion is also removable from the back as
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14-bolt rear differential started replacing the 10.5" 14-bolt in
Chevrolet Silverado and GMC Sierra trucks from the 2001 model year onwards. However, the 10.5" 14-bolt axle remains in production today, specifically utilized in GMC Savana and Chevrolet Express vans. Notably, the 11.5" 14-bolt axle is
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axle. While the 10.5" 14-bolt axle is heavier than the standard Dana axles offered on the
Wrangler, it is much stronger. This increased strength allows Jeep Wrangler owners to mount up to 44" tires with sticky compound without concern about axle shaft breakage. Additionally, for Wrangler owners with
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The initial design of the GM 10.5" 14-bolt differential spanned from 1973 to 1984, remaining unaltered until 1986. This iteration featured brake drums secured by wheel studs and utilized a smaller diameter pinion bearing compared to the subsequent design. The second design, in production since 1986,
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Distinguishing it from the GM 14-bolt 9.5-inch ring gear rear differential is the latter's utilization of C-clips to retain axles, differing from the free-floating axle mechanism of its heavy-duty counterpart. Identification between the two can be made by examining the hub: the protrusion of the hub
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There are discernible differences between the GM and Ram versions, evident in the gaskets used and the axle cover designs. The GM AAM axle tubes exhibit a smaller diameter at the spindle compared to the AAM Dodge axles—measuring 4" for GM and 3.5" for Dodge from the housing. In design variation,
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In third-generation Dodge Ram 2500 trucks, the 10.5 AAM axle was used in all V8-equipped trucks, with some early-model diesel and V10 trucks also adopting this axle. Similar to the 11.5 variant, this axle also features a reusable rubber gasket and bears a resemblance to the 11.5 axle in its
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newer GM trucks are aligned with Dodge axles. Additionally, GM incorporates a vibration damper on the yoke, while Dodge positions it on the drive shaft. This configuration became the standard axle across all Ram 2500 and 3500 trucks starting from the 2014 model year.
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The 9.5-inch C-clip rear differential was featured in both the
Suburban and pickups, available in 6- or 8-lug variations, employing 33-spline axles. This differential remained in production through 2009 and even found use in vehicles like the
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Braking systems in the 14-bolt differentials manufactured until the 1998 model year predominantly incorporated drum brakes. However, select 1999 models with the 14-bolt configuration received upgrades to disc brakes; for example, the
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through the center of the wheel denotes the preferred 10.5-inch full-floating rear axle. While the 9.5-inch rear end exhibits its own durability, it is generally considered less favorable for high-torque applications.
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appearance. Notably, the Ram Power Wagon incorporates this axle type equipped with a locking differential. The 2013 model year marked the final usage of this axle configuration in the Ram 2500 and 3500 trucks.
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engines, the 14-bolt can handle the engines' increased stress. Many
Wrangler owners will have up to two inches removed from the bottom of the 10.5" 14-bolt differential housing to maximize ground clearance.
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The popularity of GM trucks and vans made 10.5" 14-bolt axles a common sight in junkyards, making them an option for vehicle customization projects, including buggy builds and even classic trucks.
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488:"129 1305 04+14 Bolt Basics Inside The Ultimate Junkyard Axle+disc Brake Bracket Install - Photo 48757743 - 14-Bolt Basics - Inside The Ultimate Junkyard Axle"
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of the topic and provide significant coverage of it beyond a mere trivial mention. If notability cannot be shown, the article is likely to be
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Larger ring and pinion versus the "14-bolt" axle, although the pinion lacks support bearings similar to the 14-bolt design.
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The 10.5" 14-bolt differential and axle is quite popular with Jeep
Wrangler owners who want to upgrade their standard
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Pinion supported with bearings on both sides of the teeth (straddle mount), which minimizes pinion deflection
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569:. Department of the Army, the Air Force, and Headquarters, Marine Corps. 12 January 1989. pp. 6–117
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http://www.4wheeloffroad.com/techarticles/drivetrain/131_0605_gm_14_bolt_axle_rebuild_parts/index.html
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Intermediate Direct
Support/General Support Maintenance Manual for CUCV (TM 9-2320-289-34)
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589:"14-Bolt Basics - Inside The Ultimate Junkyard Axle - Four Wheeler Magazine"
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trucks, SUVs, and vans from 1973 onward, including specific versions of the
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414:"Axle Results | American Axle & Manufacturing | Aftermarket OE Parts"
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11.8 AAM axle, optioned on Ram 3500 trucks with the High Output package
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Please help to demonstrate the notability of the topic by citing
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2011 Ram Power Wagon 10.5 AAM with electric locking differential
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stands as a robust drivetrain component extensively featured in
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Gear ratios: 3.21, 3.42, 3.73, 4.10, 4.56, 4.88, 5.13, and 5.38
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Selectable locking differential available on the 2014–present
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http://www.pirate4x4.com/tech/billavista/14b_bible/index.html
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614:"TMR Customs: Shaving a GM Corporate 14-bolt differential"
537:"14 Bolt Disc Brake Conversion - Four Wheeler Magazine"
201:1.590 in (40.4 mm) diameter shank on the
330:Increased GAWR: 6,900 pounds (3,100 kg) Max.
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304:GMC All Terrain concept truck with 11.5 AAM axle
213:1.5 in (38 mm) axle spline diameter
219:Axles are different lengths from side to side
216:1.34 in (34 mm) axle shaft diameter
438:"Our Favorite Jeep Axle Swaps - Jp Magazine"
210:Carrier break: 3.21:1–4.11:1 and 4.56–5.38
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132:Learn how and when to remove this message
18:10.5" Corporate 14 Bolt Differential
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228:GAWR: 8,600 pounds (3,900 kg) max.
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463:"What Is A "Corporate" 14 Bolt Axle?"
192:10.5 in (270 mm) diameter
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81:"GM 10.5-inch 14-bolt differential"
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27:Automotive heavy duty differential
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263:well, making for easier access.
252:new Silverado/Sierra 2500 trucks
225:Weight: 550 pounds (250 kg)
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54:reliable secondary sources
43:The topic of this article
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198:Axles are 30-spline axles
45:may not meet Knowledge's
222:Removable pinion support
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333:1541 alloy axle shafts
317:2500 and 3500 trucks.
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187:General specifications
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284:high-horsepower GM
647:2007-07-07 at the
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418:www.demandaam.com
161:Cadillac Escalade
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618:Four Wheeler
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541:the original
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663:Categories
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599:2019-03-30
573:14 October
547:2011-04-24
522:2019-03-30
498:2019-03-30
494:. May 2013
473:2019-03-30
448:2019-03-30
423:2019-03-30
400:References
384:Gear train
379:Powertrain
92:newspapers
66:redirected
674:Chevrolet
467:Lugnut4x4
315:Dodge Ram
308:The 11.5
194:ring gear
177:Saab 9-7X
153:Chevrolet
56:that are
645:Archived
373:See also
356:10.5 AAM
325:Features
296:11.5 AAM
389:Dana 60
281:Dana 44
277:Dana 35
273:Dana 30
106:scholar
70:deleted
258:Pinion
245:Brakes
236:Design
203:pinion
179:, and
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62:merged
567:(PDF)
279:, or
113:JSTOR
99:books
68:, or
575:2011
155:and
147:The
85:news
310:AAM
181:SSR
157:GMC
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