Selecting the right transmission greatly enhances the driving enjoyment and performance feel of your vehicle. Chevrolet Performance has you covered with a range of modern, electronically controlled automatic transmissions that offer great strength to match their powerful crate engines. Each electronically controlled automatic transmission is designed to deliver smooth, consistent, trouble-free performance on the street and stand up to high-power engines, run after run, on the drag strip. SuperMatic Transmissions offer the ultimate in automatic transmission strength and torque capability - and every Chevrolet Performance transmission is backed by a 12-month warranty. Chevrolet Performance transmissions also deliver the fuel economy benefits of a modern, electronically controlled overdrive transmission. So don't worry about taking your resto-mod for that long drive. It will be comfortable and economical!

Chevrolet Performance transmissions come factory fresh, either brand-new or remanufactured to GM standards, and are GM engineered, tested and validated to deliver smooth, dependable performance. Most importantly, you purchase them outright so there's no need to deal with shipping messy cores. Complement them with a transmission controller kit for plug-and-play operation. Conversion kits are also available to enable the use of electronically controlled transmissions in older vehicles.

Differences between 4L80-E and 4L85-E (4L80 Family Transmissions)
The 4L80-E gearsets have four pinion gears, while the 4L85 comes equipped with five pinion gears in each. External fit form and function are identical between the two variants of 4L80-E and 4L85-E transmission assemblies.

Maximum engine torque capacity rating for these units are:

• Production 4L80-E: 440 ft/lbs
• SuperMatic 4L85-E: 685 ft/lbs

   

  Features:
• Rated for up to 685 ft/lbs torque
• All new parts, including additional clutch plates
• Improved valve body for firmer shifts
• Bolt-on for Gen I small blocks and all big blocks
• For small block applications, an aftermarket converter is strongly recommended
• Ratios: 1st: 2.48, 2nd: 1.48, 3rd: 1.00, 4th: 0.75

Note: Torque converter NOT included with the transmission. Torque converter is included with kit p/n 809-19300175K2.

GM Warranty