Transmission Conversions
Select Motor Company specializes in transmission conversions, offering swaps from automatic to four-speed manual or vice versa. We tailor each conversion to enhance your vehicle’s character and performance, whether it’s a classic muscle car or custom street rod.
Custom Transmission Selection
Choosing the right transmission is about matching your engine’s power, torque, and performance goals with the ideal gearbox. Our team evaluates your engine’s specs to select a transmission and torque converter that deliver the best performance and driving experience.
Five and Six-Speed Upgrades
Want to boost your classic car’s performance with modern reliability?
We offer overdrive automatic and manual transmission upgrades, including five-speed and six-speed options, for smoother shifting, better fuel efficiency, and enhanced performance on the street and highway.
Gear Ratios & Performance Optimization
When selecting the right transmission and gearing, we consider more than just the type. For muscle cars and street rods, we focus on how the transmission's gear ratios work with the differential for optimal performance. Our calculations ensure your vehicle performs perfectly, from acceleration to cruising efficiency, at every speed.