Pro-Fit kits available for 5- and 6-speed Tremec transmissions

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Transmission conversion kit designed for cars such as this 1983 Chevrolet Monte Carlo

Next-generation Pro-Fit 5- and 6-speed Tremec transmissions for 1978-88 GM G-body vehicles have been released by American Powertrain, the company based in Cookeville, Tennessee, has announced. G-body vehicles include the Chevrolet Monte Carlo, Pontiac Grand Prix, Oldsmobile Cutlass Supreme and Buick Regal.

“Designed around the famous Tremec TKO 5-speed and the dual overdrive Magnum 6-speed transmissions, the Pro-Fit kits features a custom adjustable cross member, custom high strength driveshaft, trans mount, offset shifter and speedo solution,” American Powertrain said.

Tremec
Kit for 5- and 6-speed Tremec transmissions | American Powertrain photo

“G-body hydraulic clutch kit is also available to complete the conversion to three pedals.”

Pro-Fit kits are covered by a 2-year warranty and extended-hours tech support, the company said.

For more information, visit the American Powertrain website.

Other American Powertrain products include electric power steering for classics and hot rods.

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A former daily newspaper sports editor, Larry Edsall spent a dozen years as an editor at AutoWeek magazine before making the transition to writing for the web and becoming the author of more than 15 automotive books. In addition to being founding editor at ClassicCars.com, Larry has written for The New York Times and The Detroit News and was an adjunct honors professor at the Walter Cronkite School of Journalism and Mass Communication at Arizona State University.

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