All kits made from High-Quality USA Aluminum and Steel. Proudly manufactured in the U.S.A.!
All kits made from High-Quality USA Aluminum and Steel. Proudly manufactured in the U.S.A.!
The small block Chevy engine pattern has shaped hot-rodding for over 70 years. From early Powerglides to modern overdrive and 10-speed automatics, its consistency makes transmission swaps easier, more affordable, and more accessible than ever. Learn why SBC-pattern transmissions remain the foundation of modern drivetrain upgrades.
Torque and horsepower aren’t competing ideas—they’re inseparable parts of the same equation. By unpacking how force, RPM, and time work together, this post explains why peak numbers can be misleading and why the area under the power curve is what really determines how fast a machine is.
When you’re deep into a custom build—whether it’s a classic hot rod, a restomod pickup, or a modern powertrain swap—few decisions matter more than choosing the right transmission adapter. An adapter is more than just a mounting plate. It’s the...
Speed Gems and Wilcap (now integrated under Speed Gems) have been key players in the hot rod and custom car scene since the 1940s, providing adapters that enable non-original engine-transmission pairings.
Today, Wilcap is operated by Speed Gems, rebranded as Wilcap by Speed Gems and based in Wisconsin. They still produce engine-to-transmission adapters, flywheels, and alignment pins for vintage engines .
This history of Back to the 50s car show in Minneapolis, Minnesota, put on by the MSRA.
Whether you’re working on a hot rod, vintage restoration, diesel conversion, or a wild custom project, finding the right transmission adapter is the first step toward making it all work. Below is a breakdown of our some of our popular adapter kits at TransmissionAdapters.com, including what engines and transmissions they connect—and what kinds of vehicles they’re commonly used in.
Greetings motor enthusiasts and mechanics; I’m Kenneth from speed gems transmissionadapters. Today in this article, we will examine some of the strange places in which car engines were originally developed for the motor industry, and how they found their way into...
The world of engine swaps and custom vehicle builds continues to evolve, pushing the boundaries of performance and engineering compatibility. Automotive enthusiasts often struggle to pair transmissions with high-performance engines that lack built-in compatibility. The latest adapter kit provides a...
