More Transmission Choices For Corvettes! New Pro-Fit TKX 5-speed Systems For 1955-82 C1, C2 and C3 Corvettes

More Transmission Choices For Corvettes! New Pro-Fit TKX 5-speed Systems For 1955-82 C1, C2 and C3 Corvettes

I told you that the new Tremec TKX Transmission was going to be a game changer for hot rods and muscle cars, not only because it is a super bad ass 5-speed trans, but because this bastard fits inside stuff that was always a pain to fit a TKO into. To prove me right, or maybe my claims were a bit of foreshadowing, the gang at American Powertrain have announced all new TKX Pro-Fit kits for 1955-1982 Corvettes, with more stuff coming soon! These kits are super complete and fit factory shifter locations, require ZERO TUNNEL MODIFICATIONS, and even have shift pattern plates that look factory but with the new TKX pattern on them. I’ve seen these kits installed, and I can tell you that they are bitchin for sure. Below is all the info from American Powertrain.

And don’t forget that they have kits for anything cool you might want to build, so even if you don’t have a Vette you are going to want to hit them up.


Cookeville, TN (January 14, 2021)…American Powertrain introduces their new Pro-Fit 5-speed system for classic Corvettes featuring the all new TREMEC TKX 5-Speed. The new TKX Pro-Fit kit fits vintage Corvettes like an original GM manual transmission with the correct shift position and tunnel fit. The new TKX features a streamlined case for improved fitment with zero tunnel modifications. American Powertrain modifies the TKX shifter location that mimics the stock 4-speed fitment and shifter location. Replica shifter handles and shift pattern plates finish out the look for factory original.

The new Pro-Fit 5-speed system features the new TREMEC TKX transmission with 600 lb-ft of torque capacity with shifts up to 8,000 RPM. The system comes with American Powertrain’s patented driveshaft yoke, brand new DOM driveshaft and all installation parts for easy installation without having to remove the engine. The Pro-Fit kits are covered by American Powertrain’s two year warranty and comprehensive tech support.

American Powertrain, a TREMEC Elite Distributor located in Cookeville, TN,  manufactures and sells Pro-Fit modern overdrive transmission systems, Hydramax hydraulic clutch systems, X-Factor Cross Members and thousands of powertrain accessories for muscle, sports, street rod and race cars.

For more information about the new TREMEC TKX 5-speed, view this video, or visit To speak with one of American Powertrain’s highly qualified sales technicians, call 931-646-4836.

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