the MOST IMPORTANT UPGRADE for ANY automatic transmission.

The freshly rebuild 4l80e is now ready to go back into the turbo Silverado, and there are a few things I need to finish up before we go on our first test drive. First, it's important to check the clearances between the 4l80 torque converter and the 8.1 big block to make sure the torque converter is properly seated into the transmission pump, and second, we need to keep the trans fluid temps under control, which means a bigger transmission cooler. Today, we're installing a TruCool 40k transmission cooler behind the massive intercooler. I'm also eliminating the stock hardlines for the trans cooler, and bypassing the in-radiator trans cooler just to keep things simple. Replacing the hard lines will be some Earl's Stainless braided -6 AN hose.

DEI Fire Sleeve and Tape Kit, 5/8" ID for -6 hose. Protects hose from heat and abrasion
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Flywheel Turning Tool
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4l80e to -6 fittings for with rear return port
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-6 AN to 5/8-18 inverted flare, fits trucool 40k
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TruCool 40k transmission cooler
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Ebay Crossmember for 2000-2007 4l60 to 4l80 2wd trucks
https://www.ebay.com/itm/353514300555

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#turbotruck #silverado #4l80e

Chapters:
0:00 The rebuild is DONE
3:36 Installing the transmission
4:24 Converter to Flexplate spacing
6:34 Crossmember, driveshaft, and torque converter
8:35 Things that bug me
11:45 Mounting the Trans Cooler
16:42 AN Line conversion Parts
20:50 Building AN trans cooler lines
24:00 Test Fire