Circle D billet performance torque converters for GM transmissions — 4L60, 4L80, 6L80/6L90, 8L90, 10L90, and Powerglide/TH350/TH400.
Awesome choice for the late model 8L90 equiped GM vehicles looking to maximize boosted performance. C7 Corvette Owners - Please select application ...
View full details
A drop-in, factory-replacement option for the failure prone 8L90 torque converters. Billet Front Cover Triple Clutch Lockup Billet Apply Piston He...
View full details
Pro Series Torque ConverterConverter Diameter - 265mm - 10 1/2" Available in stall speeds from 2500 - 3400 rpm Furnace Brazed Hand TIG Welded Turb...
View full details
Awesome choice for the late model 8L90 equiped GM vehicles looking to maximize N/A performance. C7 Corvette Owners - Please select application und...
View full details
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...
View full details
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...
