Coan
Coan 11120-176 Competition Powerglide Transmission with Transbrake 1.76 Ratio
Coan 20504 High-Performance Race Torque Converter 8 Inch Spragless TH350/TH400
Coan 20417-1 Competition Torque Converter 9 inch TH350 TH400 Small Block Chevy 3500-4000 Stall
Coan 20416-1 Competition Torque Converter 9in BB-Chevy TH350/TH400 3000-3500 Stall
Coan 20425-1 9-Inch High Performance Torque Converter for Big Block Applications
Coan 22812 Forward Clutch Hub Billet Steel Alloy for GM TH400 and 4L80E Transmissions
Coan 22864 TH400 Direct Clutch Hub with Forward Pressure Plate - Billet Aluminum
About Coan Engineering
Coan Engineering has been at the forefront of performance automatic transmission technology since its founding in 1976. What started as a two-man garage operation in Indiana has grown into one of the most respected names in drag racing and street performance — without ever losing the hands-on dedication to quality that defined it from day one.
The brand built its reputation on a straightforward philosophy: build a better product than what the market had available. Coan was among the first manufacturers to use steel stators in torque converters, a design innovation that allowed their converters to withstand the extreme stress of high-horsepower racing applications. That pioneering spirit has carried through every decade of the company's history.
Today, Coan Engineering manufactures the full spectrum of performance automatic transmission components entirely in the USA. Their lineup spans complete automatic transmission assemblies for GM, Ford, and Chrysler platforms — including the legendary TH400 and Powerglide — as well as precision-engineered torque converters available in street, Pro Street, competition, and hi-performance race configurations. Whether you're building a bracket racer or a serious Pro tree application, Coan offers a solution designed for your specific power level and racing class.
Every Coan component is developed using CAD/CAM design software and manufactured on CNC turning and machining centers, ensuring tight tolerances and consistent performance run after run. All products go through strict testing procedures before leaving the facility, giving racers confidence that each part meets or exceeds the demands of competition.
Beyond complete units, Coan's extensive catalog of service and transmission repair kits, main shafts, and shift solenoids makes it easy to rebuild or upgrade an existing transmission to Coan's exacting standards. For racers and enthusiasts who want American-made quality backed by decades of motorsport experience, Coan Engineering remains the benchmark.
Why Choose Coan Racing Parts?
- Made in the USA since 1976, with a legacy rooted in drag racing innovation
- Pioneer in steel stator torque converter technology for high-horsepower applications
- Full product range from complete assemblies to individual repair and service components
- CNC-machined parts designed and tested to meet rigorous performance standards
- Bracket and Pro tree transmissions available for GM, Ford, and Chrysler platforms
- Trusted by professional and amateur racers worldwide