See All 17 Photos See All 17 Photos A quick note about the torque converter. We’re using Yank Performance Converters’ “Pro Yank” 4L80E 3400. This is a 10.5-inch billet piece that stalls at ...

The failures have included: a smoked torque converter clutch ... The only logical transmission for our 4x4 was the 4L80E four-speed automatic transmission commonly found in 3/4- and 1-ton GM ...