19300175 SuperMatic 4L85-E Transmission

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Item #: 19300175
Reg. Price: $4,152.94
Our Price: $3,422.35


19300175 Replaces 19154550 SuperMatic™ 4L85-E Four-Speed Transmission
The SUPERMATIC 4L85-E heavy-duty, high-performance transmission is based on the GM Hydra-Matic 4L80, and was designed specifically for GMPP’s powerful big-block family of engines. It was meticulously tested and validated to the high standards of GM Performance Parts, using both dynamometer and real-world, in-car testing. In fact, the mighty ZZ572/720 crate engine put this transmission through its pace, so racers can be confident that it will perform dependably on the track.
Unlike some transmissions that are remanufactured, the SUPERMATIC 4L85-E is assembled with all-new parts, several upgraded internal components and a revised valve body. It requires the GMPP transmission controller (part number 12497316 – sold separately) that allows the user to customize the shifts to fit the driver’s style or engine combination. When the transmission is used with a late-model LS engine, a special transmission flexplate with adapter must be used (part number 12621399).

With all of its enhancements and modifications over the production 4L80 transmission, the SUPERMATIC 4L85-E is rated to 720 horsepower (537 kW) and 685 lb.-ft. of torque (929 Nm). And while it was designed specifically to be used with a big-block, the high torque capacity makes it a perfect complement to LSX and small-block engines.
The torque converter is not supplied and requires (approximately 1,800- to 2,000-rpm stall speed), See part number 19299805

• Newly designed for use on our ZZ572/720 crate engine
• All new parts, including additional clutch plates
• Improved valve body for firmer shifts
• Direct bolt-on for Gen I Small-Block and all Big-Blocks
• Does not Include torque converter for Big-Block applications (approx. 2,200 rpm stall)
• For Small-Block applications, an aftermarket converter is strongly recommended
• Gear ratios: 1st: 2.48, 2nd: 1.48, 3rd: 1.00, 4th: 0.75
NOTE: Use with electronic controller P/N 19212657.
Use P/N 15000206 Dust cover for sb, bb applications.

GM Performance Parts – tested to the limits, backed by GM

GM Performance Parts crate engines undergo a 50-hour, full-throttle engine dynamometer validation that requires the engines perform from peak horsepower to peak torque. GMPP also installs crate engines in its own engineering vehicles for testing and continuous improvement. That commitment to quality and durability enables General Motors to back GM Performance Parts crate engines with a 24-month/50,000-mile warranty (whichever occurs first). All GM Performance Parts components carry a 12-month/12,000-mile warranty.

NOTE: Use with electronic controller P/N 19212657 for carbureted and Ram Jet applications. Use with electronic controller P/N 19257661 with Chevrolet Performance LS fuel injected applications.
Use yoke P/N 12473106

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