Circle D billet performance torque converters for GM transmissions — 4L60, 4L80, 6L80/6L90, 8L90, 10L90, and Powerglide/TH350/TH400.
Pro Series Billet Torque Converter Converter Diameter - 258mm - 10 1/4" Available in stall speeds from 2800 - 3700 rpm Furnace Brazed Hand TIG W...
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Great option for Daily Driver vehicle looking for a little more stall. Will drive 99% stock under light throttle. Converter diameter: 300mm - 12"...
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Pro Series Billet Torque ConverterConverter Diameter - 258mm - 10 1/4" Available in stall speeds from 2800 - 3700 rpm C6 & C7 Corvette Owners...
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Pro Series Billet Torque Converter Converter Diameter - 245mm - 9 3/4" Available in stall speeds from 3200-4600 rpm Furnace Brazed Hand TIG Weld...
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This converter is a fantastic upgrade over the OE 6L80 Converters. A daily-driver friendly stall speed coupled with billet components makes this a ...
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Great performance torque converter for a daily driven car or truck. This torque converter will have excellent street manners and only flash high ...
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Our "go to" converter for the street/strip F-body, truck, GTO or similar. 97-04 Corvette See "4L60 LT Product Line"2005 C6 Corvette - Select Bolt P...
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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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Pro Series Billet Torque Converter Converter Diameter - 245mm - 9 3/4"Available in stall speeds from 3000-4400 rpmC6 & C7 Corvette Owners - Ple...
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Pro Series Billet Torque Converter Converter Diameter - 258mm - 10 1/4" Available in stall speeds from 2800 - 3700 rpm Furnace Brazed Hand TIG W...
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This converter is a fantastic upgrade over the OE 6L80 Converters. A daily-driver friendly stall speed coupled with billet components makes this a ...
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Awesome choice for the late model 8L90 equiped GM vehicles looking to maximize boosted performance. C7 Corvette Owners - Please select application ...
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Pro Series Torque ConverterConverter Diameter - 265mm - 10 1/2" Available in stall speeds from 2500 - 3400 rpm Furnace Brazed Hand TIG Welded T...
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Pro Series Billet Torque Converter Converter Diameter - 265mm - 10 1/2" Furnace Brazed Hand TIG Welded Torrington Bearings Billet Front and Bi...
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A drop-in, factory-replacement option for the failure prone 8L90 torque converters. Billet Front Cover Triple Clutch Lockup Billet Apply Piston He...
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Pro Series Torque ConverterConverter Diameter - 265mm - 10 1/2" Available in stall speeds from 2500 - 3400 rpm Furnace Brazed Hand TIG Welded Turb...
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These Pro Series 245mm billet torque converters are ideally suited Street, Street/Strip, & Sportsman Drag Racing applications using a Powerglid...
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Running an LS or Gen-V LT swap in front of a Powerglide, TH350, or TH400 transmission? This is the right converter for you! Our 258mm option will...
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Awesome choice for the late model 8L90 equiped GM vehicles looking to maximize N/A performance. C7 Corvette Owners - Please select application und...
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This is an excellent choice for your 2017+ Camaro ZL1 and 2018+ GM 10L90 equipped vehicle! This converter is based off the original factory convert...
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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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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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Pro Series Billet Torque Converter Made to Fit the GM 4L60E LT Style Transmission Converter Diameter - 258mm - 10 1/4" Available in stall speeds fr...
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This is our most durable and adjustable option for the high HP track cars. Designed for use in 1500+HP, this converter is the perfect match for you...
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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...
