We did it! UGT finally made a 10 second pass with the STOCK BOTTOM END 8.1 holding together like a champ. UglyTruck (UGT) is a 2000 Silverado that weighs over 5,000 pounds, and is powered by a 100% bone stock, unopened, junkyard 8.1 with an S480 turbo. From what I've seen, this is the fastest pass anyone has made on a stock bottom end 8.1 in a full size Silverado. Check out the 535 big block build https://youtu.be/fm2V7B1zzMY TPMS Re-Learn tool, its only $10 on Amazon. Just don't forget the 9V batteries https://amzn.to/3YaRJeK