Circle D 10" Pro Series Torque Converter for 8HP70 / 8HP90
The Circle D 10" Pro Series Torque Converter is engineered for serious performance enthusiasts running the ZF 8HP70 or 8HP90 transmission. Built to handle extreme power levels with unmatched efficiency, durability, and throttle response, this converter is the ideal upgrade for high-horsepower street builds, drag racing applications, and boosted platforms demanding precision and strength.
At the heart of the Pro Series converter is Circle D’s exclusive billet stator, designed to dramatically improve torque multiplication and acceleration. A billet steel front cover, furnace-brazed internals, and fully hand TIG-welded pump and turbine guarantee maximum structural integrity under extreme load and heat. Torrington-style bearings ensure smooth operation and reduced friction, while the modular clutch pack assembly delivers over 1500 ft-lbs of holding capacity, making it suitable for big-power forced induction and aggressive racing setups.
Whether you're chasing quicker 60-foots, smoother power transfer, or improved reliability at high torque levels, the Circle D Pro Series converter delivers the performance edge your build deserves.
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Exclusive Circle D billet stator for improved torque multiplication
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Billet steel front cover for superior strength and longevity
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Furnace-brazed and hand TIG-welded pump/turbine for maximum durability
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Torrington-style bearings for reduced friction and enhanced reliability
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Modular high-capacity clutch pack rated for 1500+ ft-lbs
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Brass pilot design with variable lengths for precise fitment
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Ideal for high-horsepower, boosted, and competition-focused builds
Fitment
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Designed for 8HP70 and 8HP90 transmissions
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