Is it worth regearing my tow rig?
I recently bought a new travel trailer and a used truck to use as the tow vehicle. When I bought the truck I was told it had a 3.73 rear diff... anyhow after some investigation it has the 3.42. That...
Forum Discussion
4.56's and 31.5" tires put me at 2200-2300 @ 65mph. I am very glad I didn't go with 4.10's.
Here is a great link for calculating speed and rpm I'm different gears:
Gear Ratio Calculator
I have the same transmission as you, but less power at lower RPMs.
I would expect a 5.3 to appreciate a little gear since it makes power at a higher rpm than my 5.7.
I gained .5-1mpg towing. Haven't checked unloaded, probably lost about the same.
I would do 4.56's in a minute then. Best bang for the buck change I've made to my truck so far.
Here is a great link for calculating speed and rpm I'm different gears:
Gear Ratio Calculator
I have the same transmission as you, but less power at lower RPMs.
I would expect a 5.3 to appreciate a little gear since it makes power at a higher rpm than my 5.7.
I gained .5-1mpg towing. Haven't checked unloaded, probably lost about the same.
SnowSTi wrote:
Yeah I would need to go to a 4.56 to make use of OD I think. Looks like I'd be at roughly 2300rpm at 65mph using 4.56 gears. That probably makes more sense than the 4.10s.
This truck is used exclusively as a tow vehicle so I don't care how it performs when it isn't towing.
I would do 4.56's in a minute then. Best bang for the buck change I've made to my truck so far.
