Turbo 8.1 DESTROYED my 4L80

The Turbo Big Block 8.1 makes a ton of torque, and the 4l80e is usually a great transmission, and it will normally hold up to a ton of power, and behind the Turbo 8.1 this stock 4l80 held up very well. Its seen about six months of 620lb.ft. of torque on low boost, and a couple dozen passes at a higher boost level with over 700lb.ft. My goal at the beginning of the day was to remove the 4l80, install a Circle D torque converter and a Transgo shift kit, but as I was wrapping up the job, I noticed a small detail that changes the direction we're gonna take...

The shift kit is a Transgo HD2, and the torque converter is from Circle D, its a 265mm single disc rated at 3,200 to 3,400 RPM stall speed.

#turbobigblock #circled #silverado

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