PRODUCT DESCRIPTION
TF-904 w/weights, 4200-5000 RPM stall
All Full Race series converters are built, tested, and proven to support up to 1,000
horsepower
Features a custom anti-balloon plate designed to stop potential torque converter ballooning
Designed to handle the extreme shock and abuse of trans-brakes, nitrous oxide, superchargers, and
turbochargers
State of the art Spray Welding process is used in select areas. Spray Welding provides clean,
strong and consistent fusion while also increasing strength through hardening from higher process
temperature
Each converter is hand-built and inspected in every step of assembly to ensure top of the line
quality
All Hays torque converters are internally welded compared to brazing. Testing has shown welding
provides longer converter life while also enhancing consistency
Heavy duty Torrington bearings are used for greater strength and durability
Stators are chosen with high flow vents and channels to promote cooling in heat producing higher
horsepower applications
Increased horsepower and acceleration due to a weight saving, one application design. Almost all
Hays converters are built for one application to reduce weight compared to a multi-bolt pattern
converter.
Full Race series torque converters are offered in several different stall speeds for popular
automatic transmissions
Industry leading Tech Support Team is available to provide assistance with stall speed
selection
Torque converter specs:
Anti-Balloon Plate No
Balanced Yes
Bolt Circle 10"
Brand Hays
Crank Pilot Diameter 1.81
Diameter 10"
Emission Code 3
Input Spline 27
Lock Up/Overdrive No
Product Type Torque Converters
Series Full Race
Stall 4200-5000
Transmission TF-904
Use with Power Adder Yes
Use with Trans-Brake Yes
Part Number 97-3D42F
