I have a new Chevrolet (2015) 2500HD 4X4 Crew Cab with the 6.0 gas engine. The dealer says it has a .410 rear end but I'm not sure. How can I be sure?
Back in the day checking out gear ratios you would lift up the rear end, put a mark on the drive shaft & tire, rotate the tire around 1 revolution & count the number of turns on the drive shaft.4 and some revolutions gets you close to the 4:10 or 4:11. I'm sure Fordnut's web sight may give you more insight.
The window sticker should have that information.
Thanks Mark. Your formula seems to still hold true. I turned the drive shaft four times and the tire made one complete rotation and about 10% more. Just what you would expect for a .410. The sticker did say .410 but it just didn't feel like a .410 back in the day. I guess these fancy new transmissions are to blame, lol.
The newer transmissions with the tall overdrives make the feel of the 4:10 rears go away in the top transmission gears. Good luck with your new truck.
Thinking of buying a 2018 Chevrolet 2500 HD Crew Cab Standard bed with a 6.0 engine a six speed trans with a 4.10 rear end ratios is this a good combo for pulling my 7500 L.B.S. travel trailer I have a e-qualizer hitch. Thanks Ed
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