Performance Adapters: Transmission Adapters & Performance Accessories - A Perfect fit for your Project!
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Performance Adapters - Keep on Adaptin'!

PerformanceAdapters.com offers a wide range of Transmission Adapter Kits and Performance Accessories designed to help automotive enthusiasts and professionals achieve seamless engine-to-transmission swaps. Their lineup supports classic, modern, and custom builds with precision-engineered components designed here in the USA and tailored for performance and reliability.




Transmission Adapter Kits for Every Build
Performance Adapters specializes in transmission adapter kits that allow users to mate engines and transmissions across different generations and platforms. These kits are ideal for hot rodders, restorers, and custom builders looking to upgrade drivetrains without sacrificing compatibility.
Popular Transmission Adapter Kits Include:
- Chevrolet Inline/Straight-6 to GM TH350/TH400 V8 Automatic A cost-effective solution featuring a billet aluminum adapter plate, custom flexplate, starter, and all necessary hardware.
- Ford Small Block (289/302/351W) to Ford Modular 6R80 V8 Automatic Designed for modernizing classic Ford builds with newer transmission tech.
- Ford Big Block (429/460) to Ford Ecoboost 6R80/10R80 V6 Automatic Enables high-torque engines to pair with efficient modern transmissions.
- Honda K-series to Subaru EJ Manual Transmission A unique offering for tuners and rally enthusiasts blending Japanese performance platforms.
- Chevy/GM 4200 Vortec/Atlas to TH350/TH400 Automatic or Manual Supports both automatic and manual setups for versatile GM engine swaps.
Each kit is engineered for minimal weight and maximum strength, with attention to ease of installation and long-term durability.
Custom Engineering and One-Off Projects
Beyond their standard kits, Performance Adapters offers custom engineering services for unique builds. Customers can collaborate with the team to design bespoke solutions for rare or unconventional engine-transmission pairings.
Examples of Custom Projects:
- Allis-Chalmers to GM Automatic Transmission
- Volkswagen TDI to Dodge NSG238 Transmission
- Net-gain Hyper-9D AC Motor Honda K-20 Manual Transmission
- Cadillac NorthStar to AUDI O1-E Manual Transmission
These projects demonstrate the company’s commitment to innovation and adaptability, helping customers bring ambitious builds to life.
Performance Accessories and Fittings
To complement their adapter kits, Performance Adapters also offers transmission cooler adapter fittings for 6R80/10R80 setups:
- Forward Facing (#PATCA6R10R-FF)
- Straight Out (#PATCA6R10R-ST)
These accessories ensure optimal cooling and performance for high-demand applications.
Customer Support and Community Commitment
Performance Adapters stands out for its 24/7 customer support via call, text, or email, and its dedication to military and first responders. Their slogan, “Keep on Adaptin’™,” reflects a culture of continuous improvement and customer empowerment.
Whether you're restoring a vintage ride, building a track monster, or crafting a one-of-a-kind street machine, Performance Adapters provides the tools and expertise to make your drivetrain dreams a reality.
Give us a call and mention this blog on your Next Order!
Thanks!...and...Keep on Adaptin'!