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