Circle D billet performance torque converters for GM transmissions — 4L60, 4L80, 6L80/6L90, 8L90, 10L90, and Powerglide/TH350/TH400.
Fun choice for a street/strip C5 Corvette, LT1 F-Body, Impala SS, 350 Vortec Truck, or even 700R4 equipped vehicles. Furnace Brazed Hand TIG We...
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This is an excellent choice for your high HP 2017 ZL1 and 2020+ 6th-Gen! We have options available to accommodate a wide variety of engine, power-a...
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This is an excellent choice for your 2019+ GM L87/L84 10L90 build! We have options available to accommodate a wide variety of engine, power-adder, ...
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This is an excellent choice for your 2019+ GM L84 build! We have options available to accommodate a wide variety of engine, power-adder, and vehicl...
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Applications include 5.7 vortech trucks, LT1 Impala SS, LT1 F-Body, LT1 Corvette and more. Converter Diameter: 298mm - 11" Stall speeds 1800-24...
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Pro Series Billet Torque Converter Converter Diameter - 265mm - 10 1/2" Available in stall speeds from 2500 - 3400 rpm Furnace Brazed Hand TIG W...
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These Pro Series 230mm billet torque converters are ideally suited for Track, Street/Strip, & Sportsman Drag Racing applications using a Powerg...
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This is our most durable and adjustable option for the high hp street/track cars. Designed for use in 800+HP, this converter is the perfect match f...
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Billet Front Cover Billet Lockup Piston Carbon Lockup Clutch Lining Furnace Brazed Pump/Turbine Modified Impeller/Stator for Higher Stall Flanged ...
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Pro Series Billet Torque Converter Converter Diameter - 265mm - 10 1/2" Available in stall speeds from 2500 - 3400 rpm Furnace Brazed Hand TIG W...
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This is our most durable and adjustable option for the high hp street/track cars. Designed for use in 800+HP, this converter is the perfect match f...
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Let's talk about torque converter clutch drag when using a multi disc torque converter in a 4L80E transmission. We see this issue come up from time to time, especially (but not limited to) in 4L80E applications equipped with a transbrake...
Today we're diving in to the often debated & sometimes mysterious topic of single disc vs. multi disc lock-up torque converters for use in common OEM-based overdrive transmissions. To begin, we need to understand the purpose of a torque...
