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Stesso

Drivetrain Reinforcement for Drag Racing

2:50
17:45
17.2K views

At 2:50 in

He Turned His Wife's Daily Driver Into A Grudge Truck! Crew Cab 4x4 Twin Turbo Silverado (Runs 9s)

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What happens here

As the truck transitioned to drag racing, the stock drivetrain components proved inadequate for the increased power. Garry recounts experiences with transmission failure (the 4L60) and a broken front differential (teeth breaking off the ring gear), which he attributed to an inexpensive "eBay gear" set. To fortify the vehicle for high-performance use, substantial upgrades were made: a robust 9-inch rear differential was installed, and custom gear ratios of 3.70 in the rear and 3.73 in the front were selected to optimize power delivery and prevent binding in the all-wheel-drive system. These modifications were crucial for the truck's durability and competitive potential.

Goal: Strengthen the entire drivetrain to handle extreme power and prevent component failure during drag racing.

Tools and materials

  • 3.70 Rear Gears

What they say

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long time and then she saved up and bought something else and i started towing with it and so i pulled it in the shop one day and i put some 410 gears in it and i had a little 62 millimeter charger i stuck on the 5'3 to make a better tow rig and it was it was a towing son of a gun and i took it to a local racetrack one night and it went like 12 20s couldn't believe it and like just people just flocked to it then you buy then you buy a converter then you'll wipe out the 4l60 and then you start building transmissions and put cams in it you know it's just a big snowball and i built a stroker and i blew up the stroker you're the only guy i know that's ever broken a front diff in one of these for the four-wheel drive people but it wasn't why you would think you would break it honestly i don't know i really can't tell you why i broke it going from two different locations on drag week cruising down the road like 50 mile an hour it just locked the front end broke broke some teeth off the ring gear but i had a really cheap gear set in it i mean it was like a usa gear ebay crap that's probably why it broke so you got the nine inch back here and you because the gm and the four ratios don't cross over so you got like four tens in the nine inch and four eleven in the front um i don't have the 410s anymore put a 370 in the rear and a 373 in the front i can't say i've ever noticed an issue from it you don't feel like it binds up going down the road

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