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Overdrive Transmission Kits

Crate Engines

Rear Axle Assemblies

Recommended Parts

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

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

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


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

TREMEC Elite Distributor

We are very excited to announce that TREMEC has appointed Silver Sport Transmissions as one of its Elite Distributors.  It is a great honor to be recognized in this fashion by such a superb company as TREMEC.

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Super Chevy's article on a customer's 1967 El Camino "Gentleman Cruiser" that's really a bruiser!

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Raybestos Mustang

Watch the video of the Raybestos Mustang as it navigates the cones.

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Street Muscle Magazine

Street Muscle Magazine humorous look at our customer service.

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Upcoming Shows

Mopar Nationals

Join SST at Mopar Nats, a show that offers the participant as well as the spectators three action packed days (and nights) of everything MOPAR. With 3000 cars that represent all eras of the Chrysler brands, featuring classics, muscle cars, the high-performance new models and AMC's for a one of a kind everything Mopar weekend.

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Silver Sport Transmissions Tremec TKO and T56  line of PerfectFit™ Kits are all LS compatible and we also sell our  EZ-LS Kit to make swapping to an LS engine a lot easier.  Even if your car doesn't have an LS engine, come visit, there will be plenty to see!  We also have several LS engines for sale.

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Silver Sport Transmissions will be attending Carlisle Chrysler Nationals. Come visit our tent on the Midway in front of the grandstands and ask us about our show special!  With over 2,500 Mopars on show, it will be the place to be for Mopar lovers.  The cars are arranged by year, make, and model and there are special indoor exhibits as well.  To learn more or to register your car for the show, visit Carlisle's website here.

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Jimmy "Tater" Matthews will be representing us well in the Charolette Rod & Custom's tent and on the track at Good Guys Charlotte 22nd Southeastern Nationals at Charlotte Motor Speedway. Read more for details.

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