TRANSMISSION & DRIVETRAIN 253 Get feedback from real Summit customers with our online Ratings and Reviews! Order today! SummitRacing.com | 1-800-230-3030 Eaton Performance Differentials Eaton differentials feature precision-forged gears for smooth, quiet performance and great traction, even under high torque loads. They’re housed in high-strength steel cases and come with a manufacturer’s 1-year limited warranty. Quality petroleum-based oil is recommended for installation. More applications available—call us or visit SummitRacing.com. Posi Performance Differentials Posi Performance limited-slip differentials have carbon disc clutch packs that smoothly increase grip as torque input increases. The result is unbeatable traction with seamless activation and chatter-free performance. Add friction modifi ers to gear oil for optimum performance. Price Each ETN-19663-010 GM 10 bolt, 7.5", 26-spline, 3.23-up ratio ......................... $696.99 ETN-19599-010 GM 10-bolt, 7.5"/7.6", 28-spline, 3.23-up ratio .................. $777.99 ETN-19686-010+ GM 10-bolt 55P, 8.2", 28-spline, 3.90-below ratio ............. $775.99 ETN-19603-010 Chevy 10-bolt, 8.2", 28 spline, 3.08-up ratio...................... $750.99 ETN-19674-010 Pontiac/Olds/Buick 10-bolt, 8.2", 28-spline, 3.36-up ratio; $857.99 ETN-19670-010 Chevy Corvette, 1963-79, 8.5", 17-spline, 3.08-3.90 ratio; $886.99 ETN-19557-010* GM 10-bolt, 8.5", 28-spline, 2.76-up ratio ......................... $750.99 ETN-19559-010* GM 10-bolt, 8.5"/8.6", 30-spline, 2.73-up ratio .................. $750.99 ETN-19554-010 GM 12-bolt, car, 8.875", 30-spline, 3.07-3.73 ratio ............ $750.99 ETN-19555-010 GM 12-bolt, car, 8.875", 30-spline, 4.10-up ratio ............... $801.99 ETN-19587-010 GM 12-bolt, truck, 8.875", 30-spline, 2.76-3.42 ratio ........ $609.99 ETN-19556-010 GM 12-bolt, truck, 8.875", 30-spline, 3.73-up ratio ........... $750.99 ETN-19689-010 GM 14-bolt, 10.5", 30-spline, 4.11-below ratio .................. $911.99 ETN-19588-010 Ford 8.8", 31-spline (excludes Super 8.8") ......................... $750.99 ELocker Differentials Switch from easy driving around town to sure-footed off-road traction at the push of a button! Eaton’s ELocker differentials engage and disengage electrically, so you get all the advantages of a fully locked diff on the trail, without any of the drawbacks when you return to the pavement. Include switch and relay. Price Each ETN-19977-010 Dana 44, 30-spline, 3.73-down ratio ............................$1,509.99 ETN-19969-010 Dana 44, 30-spline, 3.92-up ratio .................................$1,447.99 An oversize fee may apply. Details at SummitRacing.com. *Axles with small bearing bores (2.89" race O.D.), usually found on vehicles prior to 1999, require bearing LM102949 and race LM102911. Axles with large bearing bores (3.06" race O.D.), usually found on vehicles from 1999 to present, require bearing LM603049 and race LM603012. +Factory open differentials require housing modifi cation for installation. Legendary traction! Proven every week by professionals in NASCAR, IHRA, NHRA, ARCA, NMRA, and more, the original Detroit Locker delivers 100% torque and power to both drive wheels, maximizing traction. It’s engineered to keep both wheels in a constant drive mode, and has the ability to allow wheel-speed differentiation when needed. Price Each ETN-225S10 GM 14-bolt, 10.5", 30-spline .......................................... $713.99 ETN-187C145A+ Ford 8.8", 31-spline .....................................................$1,045.99 ETN-187SL17B* Ford 9", 31-spline ........................................................... $884.99 ETN-225SL56A Ford 10.25", 35-spline .................................................$1,099.99 ETN-187SL16C Dana 44, 30-spline, 3.92-up ratio .................................. $964.99 ETN-225SL29B Dana 60, 35-spline, 4.10-below ratio ............................. $992.99 *Except 2.72 pinion ratio. +Excludes Super 8.8". Auburn Gear Grip-N-Loc™ Differentials These Auburn Gear Grip-N-Loc limited-slip differentials feature an exclusive cone and cup clutch design that transfers up to fi ve times the torque of the low-traction wheel to the high-traction wheel. That means improved grip on the street, track, or trail while still maintaining good cornering performance. Plus, they’re built with hardened steel gears and a nodular ductile iron case that’s up to 50% stronger than your stock differential. Each comes with a 6 oz. bottle of friction additive, detailed instructions, and a manufacturer’s 2-year limited warranty. Made in the USA. Price Each AUB-546046* GM 10-bolt, 7.5"/7.625", 28-spline, 3.23-up ratio ................. $538.99 AUB-546061* GM 10-bolt, 8.2", 28-spline, 3.08-up ratio ............................ $549.99 AUB-5460100+ GM 10-bolt, 8.4" 55P dropout, 17-spline, 1955-64, 3.70-below ratio.................................................................... $605.99 AUB-546050* GM 10-bolt, 8.5"/8.6", 28-spline, 2.73-up ratio ..................... $582.99 AUB-546018* GM 10-bolt, truck, 8.5"/8.6", 28-spline, 2.73-up ratio ........... $536.99 AUB-546022* GM 10-bolt, 8.5"/8.6", 30-spline, 1989-98, 2.73-up ratio ..... $569.99 AUB-546097* GM 10-bolt, 8.5"/8.6", 30-spline, 1999-up, 2.73-up ratio ..... $544.99 AUB-546052* GM 10-bolt, truck, 8.5"/8.6", 30-spline, 2.73-up ratio ........... $556.99 AUB-546033* GM 12-bolt, car, 8.875", 30-spline, 3.07-3.73 ratio .............. $555.99 AUB-546062 Corvette 10-bolt, 8.5", 17-spline, 1963-79, 2.41-3.70 ratio .... $792.99 AUB-546059 Ford 8", 28-spline, 3.00-up ratio ........................................... $659.99 AUB-546080 Ford 8.8", 28-spline .............................................................. $585.99 AUB-546054 Ford 8.8", 31-spline .............................................................. $586.99 AUB-5460116 Ford 8.8", 33-spline .............................................................. $629.99 AUB-546043 Ford 9", 28-spline, all ratios .................................................. $709.99 AUB-546036 Ford 9", 31-spline, all ratios .................................................. $768.99 AUB-546089 Ford 10.25"/10.5", 35-spline ..............................................$1,002.99 AUB-546074 Chrysler 8.25", 29-spline, 2.71-up ratio ................................ $649.99 AUB-546051 Chrysler 8.75", 30-spline, all ratios ....................................... $682.99 AUB-546070 Chrysler 9.25", 31-spline, 2.71-up ratio ................................ $597.99 AUB-5460142 Chrysler ZF 9.25", 31-spline, 2010-21, 2.71-up ratio ........... $794.99 AUB-546081 AMC 20, 29-spline, 3.07-up ratio ......................................... $739.99 AUB-546085 Dana 44, 19-spline, 3.73-below ratio .................................... $652.99 AUB-546083 Dana 44, 30-spline, 3.73-below ratio .................................... $514.99 AUB-546082 Dana 44, 30-spline, 3.92-up ratio ......................................... $644.99 AUB-5460131 Toyota 8", 30-spline .............................................................. $809.99 AUB-5460132 Toyota 8.4", 30-spline ........................................................... $874.99 AUB-546030 Toyota Land Cruiser, 8.875", 30-spline ................................. $774.99 AUB-5460134 Toyota Tundra 10.5", 36-spline ............................................. $869.99 *3-series carrier. +3-series carrier. Non-posi “899” housings require grinding for clearance. Detroit Truetrac Differentials The Truetrac by Eaton features parallel-axis helical gears, which provide a quiet, automatic splitting of torque. You won’t notice it’s operating, even on front axles. The Truetrac operates like an open differential under normal conditions, and automatically transfers torque to the wheel with better traction when conditions warrant—any time, at any speed. Price Each ETN-911A319 GM 10-bolt, 7.5", 26-spline, 3.23-up ratio ........................$653.99 ETN-912A317 GM 10-bolt, 7.5"/7.6", 28-spline .......................................$642.99 ETN-912A556 GM 10-bolt, 8.5", 28-spline, rear ......................................$696.99 ETN-913A481* GM 10-bolt, 8.625", 30-spline, 2.73-up ratio ....................$659.99 ETN-913A555 GM 12-bolt, car, 8.875", 30-spline, 3.08-3.90 ratio ..........$716.99 ETN-913A315 GM 12-bolt, truck, 8.875", 30-spline, 3.73-up ratio ..........$746.99 ETN-914A538 GM 14-bolt, 9.5", 33-spline ..............................................$813.99 ETN-915A545 GM 14-bolt, 10.5", 30-spline, 4.10-below ratio .............$1,017.99 ETN-912A616 Ford 8", 28-spline, 3.25-up ratio.......................................$814.99 ETN-912A562+ Ford 8.8", 28-spline ..........................................................$767.99 ETN-913A561+ Ford 8.8", 31-spline ..........................................................$749.99 ETN-912A587 Ford 9", 28-spline, 3.25-up ratio.......................................$685.99 ETN-913A586 Ford 9", 31-spline, 3.25-up ratio.......................................$675.99 ETN-914A690 Ford 9", 35-spline, 3.25-up ratio.......................................$729.99 ETN-915A550 Ford 10.25"/10.5", 35-spline .............................................$874.99 ETN-913A572 Chrysler 8.75", 30-spline, 2.76-4.56 ratio ........................$839.99 ETN-913A368 Chrysler 9.25", 31-spline, 2.76-4.56 ratio ........................$819.99 ETN-912A585 Dana 30, 27-spline, 3.73-up ratio .....................................$642.99 ETN-915A568 AAM 11.5", 30-spline .....................................................$1,299.99 *Will fi t 8.5" with special bearings. +Excludes Super 8.8". Auburn Gear Select-A-Loc® Differentials Get improved traction at the fl ip of a switch! Auburn Gear’s Select-A-Loc differentials put you in complete control, allowing you to instantly switch from the trouble- free performance of an open or limited-slip differential to the always-on traction of a locked differential. They feature heat-treated hardened-steel gears and a nodular ductile iron case for unbeatable durability. These 12V differentials are 100% electrically operated, so you get instant engagement, even under full load (up to 5 mph). Also compatible with front axles, with or without lockout hubs. Installation manual and 6 oz. of limited-slip additive included. Call us or visit SummitRacing.com for application information and to get yours! Made in the USA. Select-A-Loc differentials, each .......................................................... from $1,209.99 An oversize fee may apply. Details at SummitRacing.com. Summit Racing™ Positraction Differential Carriers Get the aggressive traction you need, with smooth engagement. Our Positraction clutch-type differential carriers have strong, forged steel internal components, packed in a durable nodular iron case. Find the one that matches your axle at SummitRacing.com, or call us. Summit Positraction differential carriers, each .........from $568.99
