2004 chevy 2500HD with vortec 6.0 liter with a GT5 label so I think it has 4.10 gears. Can I change the gears and get better mileage and lower rpms

5

Asked by Feb 28, 2016 at 04:34 PM about the 2004 Chevrolet Silverado 2500HD 4 Dr LS Extended Cab SB HD

Question type: General

I have a 2004 Chevy 2500HD that I just bought. It has the Vortec 6.0 liter V8.
Its running 2500rpm at 70mph on the highway. Can i change the rears in the
rearend to get better mpg with lower rpm.

2 Answers

37,965

You probably have the 3.73 gear ratio in the rear end, if you had 4.10 you would be running up around 3200-3500 RPM. I'm not sure you'd really want to go with a higher gear ratio with what that set-up is, cause it would be a lot more strain on the trany, especially pulling anything heavy.

1 out of 1 people think this is helpful.
5

I was thinking of trying to go with something like 3.55 gears so that it would run lower rpm on the highway. Does anyone have any helpful information. I dont pull anything with the truck. I will be driving it on the highway mostly.

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