Performance Transmissions

Mechanic holding a silver transmission ready for installation under a vehicle in an auto repair shop, with another technician working on the car in the background.

Complementing your Chevrolet Performance crate engine with a factory-engineered new or remanufactured performance transmission is a cinch with our comprehensive lineup of automatic transmissions, torque converters and installation kits. Each transmission kit is engineered with factory-matched torque capacity ratings, helping ensure the transmission you purchase will stand up to the power of your engine.

4L85 automatic transmission displayed at an angle, highlighting its exterior design and structure, suitable for performance upgrades and repairs in various vehicles.

SuperMatic 4L85-E Four-Speed Transmission

Modified valve body for firmer shifts than production 4L85-E
Direct bolt-on for Gen I Small-Block and all Big-Blocks
Does not include torque converter
Includes additional clutch plates
Gear ratios: 1st: 2.48, 2nd: 1.48, 3rd: 1.00, 4th: 0.75
Tested up to 690 lb-ft of torque

NOTE: Use with electronic controller P/N 19332780 for carbureted and RamJet applications. Use with electronic controller P/N 19302410 with Chevrolet Performance LS fuel-injected applications. Torque converter not included.

Part Number – 19300175

~~WAS $5,664.25~~

NOW $4,655.25

6L80-E six-speed automatic transmission displayed with components including wiring harness and connectors, designed for enhanced vehicle performance and efficiency.

SuperMatic 6l80-E Six-Speed Transmission W/ 2400-2800k Stall Converter

Electro/hydraulic controls with clutch-to-clutch shifting
Output torque rating: 650 lb.-ft.
Gear ratios: 1st: 4.02, 2nd: 2.36, 3rd: 1.53, 4th: 1.15,
5th: 0.85, 6th: 0.67
Does not include dipstick
Includes production vent tube assembly & truck-style production oil pan
Kit includes controller and harness, with calibrations for street and track; harness also includes paddle-shift connection
Kit includes transmission bulkhead connector that supports aftermarket gear indicator displays, electronically controlled shifters and more
Chevrolet Performance-specific design includes provisions for an aftermarket transmission cooler, including -6AN fittings

Part Number – 19366637

~~~~WAS $6,215.95~~~~

NOW $4,940.68

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