Transmission & Drivetrain
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Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic...
Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic and manual transmissions for street and strip applications, torque converters and clutch sets, flexplates and flywheels, plus limited-slip differentials, spools, lockers, ring and pinion sets, driveshafts, U-joints, axles, bearings, C-clip eliminator kits, transfer cases, shift kits, and rebuild kits. We also have a wide selection of trans-brakes, shifters, cables, and accessories—everything you need to put the power to the ground, Summit style.
Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic and manual transmissions for street and strip applications, torque converters and clutch sets, flexplates and flywheels, plus limited-slip differentials, spools, lockers, ring and pinion sets, driveshafts, U-joints, axles, bearings, C-clip eliminator kits, transfer cases, shift kits, and rebuild kits. We also have a wide selection of trans-brakes, shifters, cables, and accessories—everything you need to put the power to the ground, Summit style.
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Summit Bucks
The OE pressure regulator valve design prevents adequate cooler flow at low rpm and high-pressure conditions, which can create overheating. Additionally, in 1999 and later vehicles, the factory EPC pressure was set high at idle, resulting in engine surge conditions in GM 4L80-E and 4L85-E units. Sonnax lube-regulated pressure regulator valves provide a significant increase in cooler flow under low rpm and high-pressure conditions that benefits all vehicles—and eliminates the need for reprogramming 1999 and later vehicles with high EPC pressure at idle.
( 20 )
$39.30
TCI Outlaw shifters not only ensure that you will find the right gear when you need it, but also deliver great looks. Constructed of billet aluminum with a pistol grip shifter, they are rugged enough to handle both street and race duty, while complementing the interior of any vehicle. They feature rugged construction and are perfectly suited for competition use, being compliant with NHRA/IHRA-legal reverse lockout regulations. In addition, Outlaw shifters feature a park/neutral safety switch, along with provisions for a reverse light system. A shifter cable and installation hardware are included.
( 88 )
$412.95
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$497.95
These TCI FAST-GATE automatic shifters have been specially designed to fit most 3 or 4-speed automatic transmissions. They feature study construction capable of withstanding the demands of racing, and yet look classy enough for most street applications. The shifters have stamped components to ensure smooth, accurate movements when shifting, and the reverse lockout mechanism eliminates the chance of transmission damage from accidentally shifting into reverse. The TCI FAST-GATE automatic shifters include a stylish and durable injection-molded cover, a shifter cable, and all mounting hardware for a simple installation. All FAST-GATE shifters are compliant with current NHRA and IHRA safety regulations.
( 58 )
$257.95
Engineered for performance, designed for durability, TransGo automatic transmission torque converter clutch valves help correct common lockup issues. The valves are available as a drop-in lockup balance valve or an oversized converter regulator valve. The drop-in balance valve prevents or reduces, lockup failure, chugging or killing engine at stop, and engine code 628 activations. The oversized converter regulator valves help correct valve bore wear, which can cause harsh lockup, excessive lockup slip, overheating, or activate P0740 lockup performance codes. These simple fix, drop-in solutions are available to correct common problems, eliminate the need to replace the pump, and save you money.
Not Yet Reviewed
$27.14
TransGo automatic transmission TFSC SHIFT KIT Valve Body Repair Kits (P/N SKTFSC) fit 1960 and newer Chrysler, Dodge Plymouth, AMC, and Jeep vehicles with both small case 3-speed transmissions (such as the A904, A998, A999, TF6 and 30RH), as well as big case 3-speed transmissions (such as the A727, TF8, 36RH and 37RH) with or without lock-up. Common complaints on these transmission are soft shifts, loss of power on launch, pump bushing burn-up, TC clutch failure, stalls in reverse when hot, converter hub failure, and torque converter drain-back. * Features and benefits: The Shift Kit includes valve body components and modifications designed to deliver short smooth shifts and a better TC clutch apply. There are several innovative components in this kit. For instance, the line-to-converter feed system which helps the unit run cooler and promotes longer TC clutch life. Also included is a TransGo pioneered manual valve to reduce overnight forward and reverse delayed engagement complaints due to torque converter drain-back. Lastly, the kit can be installed with the transmission in the truck. * Corrects/Prevents/Reduces: -- TCC slip or shudder -- Reduces converter drain-back -- Soft shifts -- Loss of power on launch -- Converter hub failure -- Pump bushing failure * Includes: -- USA-made hardened steel manual valve with converter charge in park provision *(fits 1966 an dlater only) -- Mumbly peg (for easy detent spring and ball installation) -- PR valve shim, spring seat and inner spring for line-to-converter feed provision as well as outer spring for increased pressure -- Bypass valve spring -- Bypass ball spring -- Converter regulator valve spring
Not Yet Reviewed
$29.57
Summit Bucks
Sonnax Line pressure booster kits allow you to shift aggressively and then feel the tranny grab the clutches with more power when it changes gear. The larger boost valves and matching regulator springs raise line pressure progressively as higher pressure is commanded. These kits modify the sensor signal, which causes the computer to create a pressure increase. They're installed between the pressure sensor and vehicle harness using OE-style sealed connectors; no modifications are needed to the transmission.
( 14 )
$82.70
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