Circle D billet performance torque converters for GM transmissions — 4L60, 4L80, 6L80/6L90, 8L90, 10L90, and Powerglide/TH350/TH400.
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 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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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...
