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GM Chevy Chevrolet Buick GMC Pontiac
Mopar Dodge Plymouth Chrysler
American Motors Corporation
TREMEC Overdrive Transmission Kits

Overdrive Transmission Kits

Crate Engines

Crate Engines

Spraker Rear Axle Assemblies

Rear Axle Assemblies

Recommended Parts

GM 621 Reproduction Bellhousing

Having a hard time locating a good Chevy 621 bellhousing that doesn't have stripped threads or cracks? Look no further because Silver Sport Transmissions produces its own version of the 621 bellhousing. This new bellhousing is cast from thick wall titanium aluminum alloy, CNC machined to provide precise location of mounting and dowel pin holes, and the center bore that locates the gearbox. Read More

Silver Sport Transmissions PerfectFit™ Hydraulics Kit

The Silver Sport Transmissions Hydraulic kit is the OEM style, proprietary design release bearing. It’s rated at 7000 rpms, has a forged aluminum housing, silicone dust boot , piston wiper seals and a 1,000,000 cycle service life. This bearing is well suited for everyday use. Read More

Tremec 6-Speed Reverse Lockout Control Module

The Reverse Lockout Control Module restores functionality of the Reverse Lockout Solenoid on classic cars. *Requires the optional connectors below if you don't already have them. Read More


The overdrive transmission kit that everyone loves

Silver Sport Transmissions modifies Tremec 5 and 6 speed transmissions to retrofit into your classic car, truck or street rod and includes any parts and accessories required to install them. Our PerfectFit™ Kits are made to last with only the highest grade parts included in our kits and all of our transmissions are quality tested for leaks, noise, and performance. No one else performs all the testing we do.

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Latest News

Jack Silver's 1986 El Camino

Jack Silver's, SST CEO, experiences as a customer have made SST the best company to do business with.


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Carr's Corvette 1962

Carr's Corvettes and Customs, one of our Authorized Installers, does beautiful work which is featured in magazine after magazine. This 62 can be found in Super Chevy and has a TKO 5-speed!

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Shift balls

Did you know registering your TREMEC Transmission will get you a FREE shifter ball?

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1968 Camaro

A 1968 Camaro Resto-Mod by Authorized Installer, Bowtie Automotive / Mike Poupart Motorsports

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Upcoming Shows

Carlisle Ford Nationals

Join Silver Sport Transmissions at the largest and most thrilling all-Ford event in the world.

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Hot Rod Power Tour

We'll be attending the last day of Power Tour in Bowling Green, KY. Come see us!

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Carlisle Chrysler Nationals

Join Silver Sport Transmissions and over 2,500 vehicles from all eras of the Chrysler brand, classics, muscle cars, high-performance new models all converge on Carlisle for a one of a kind weekend. 

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Mopar Nationals

We'll be in Columbus, Ohio for the Nats! Several cars with our transmission kits will be on display.

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