best first upgrade?
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New User
Joined: May 2011
Posts: 18
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Thanks for all the helpful thoughts ...I will definitely post more questions later, the truck does have 4:10 gears ..and will probably use the truck@ least half the time for hauling the camper around
Posting Guru
Joined: Feb 2011
Posts: 2,216
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From: Princeton MN
The axle swap may be the easiest option to get your milage up, if you find axles and a different speedo gear your looking at bolt in stuff.
The E4OD is a good option but requires a computer.
A manual convertion requires trans,bellhousing,hydraulic clutch slave and master cylinder, and the pedal support and pedals from a manual truck. Weighing each choice depending on how much you drive the truck too.
The E4OD is a good option but requires a computer.
A manual convertion requires trans,bellhousing,hydraulic clutch slave and master cylinder, and the pedal support and pedals from a manual truck. Weighing each choice depending on how much you drive the truck too.
Postmaster
Joined: Jan 2010
Posts: 4,319
Likes: 4
From: Elk City, OK
3.55's would be a good swap for you. being factory height the gears you have are lower then needed. you can find either a entire axle you can just swap in like 84 said or you can trade someone gears here. im sure theres more then a few guys that would like to get some lower gears in their truck since they lifted theirs. you just have to go though the added expense to have em installed (unless you know what your doing, dont try it yourself or you can install em wrong and wear them out quickly) but if you do an axle swap, takes an hour or so and theres no fee and doesnt take much know-how to do the job
Post Fiend
Joined: Feb 2009
Posts: 8,005
Likes: 7
From: Ottawa, Ontario
X2 on 3.55's with the C6. It's a great combo for a mix of highway/towing.
My motorhome witch comes to about the same weight as your truck and slide-in does fine with that setup.
Just keep it around 60mph on the highway, and it keeps you around 2300-2500RPM.
Your gonna have a decent wind load, so keeping RPM's over 2k is important.
My motorhome witch comes to about the same weight as your truck and slide-in does fine with that setup.
Just keep it around 60mph on the highway, and it keeps you around 2300-2500RPM.
Your gonna have a decent wind load, so keeping RPM's over 2k is important.
Post Fiend
Joined: Feb 2009
Posts: 8,005
Likes: 7
From: Ottawa, Ontario
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Fleet Owner
Joined: Jul 2006
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From: Mi'kma'ki
yeah the front axle is technically 3.54 with the rear being 3.55.
4:09 fronts with 4:10 rears.
just a little "diff" there to avoid some stress and trying to run over herself...or i guess the other way around right,so she pulls a bit slower up front while the rear pushes so very slightly more.but anyway lol.
4:09 fronts with 4:10 rears.
just a little "diff" there to avoid some stress and trying to run over herself...or i guess the other way around right,so she pulls a bit slower up front while the rear pushes so very slightly more.but anyway lol.
Posting Guru
Joined: Feb 2011
Posts: 2,216
Likes: 0
From: Princeton MN
How is that possible? There isn't enough teeth in the ring and pintion to change the amount of rotation by one onehundreth of a turn correct? I'm thinking it's just a difference between axle builders.
The only reason I stated that was to aid in finding them, so if he called a JY looking for a 3.55 gear set they may tell him no because it may be listed as a 3.54.
The only reason I stated that was to aid in finding them, so if he called a JY looking for a 3.55 gear set they may tell him no because it may be listed as a 3.54.
Posting Guru
Joined: Feb 2011
Posts: 2,216
Likes: 0
From: Princeton MN
I guess we could try and make sence of it all, or master quantum physics. I'm thinking the physics might be easier, I walked by a physics class everyday on my way to woodshop, so I think I know what I'm talking about!
Trailering
Joined: Jun 2011
Posts: 20
Likes: 0
From: San Antonio, TX
My question would be what kind fo MPG gains could I expect, and what would the RPM's be around 70MPH? (I know they advertise 25%,but I'd like to know real life for this application) Also, how exactly does this work. The website doesn't really explain it best I can tell, but based on the picture I'm guessing a switchable electronically controlled gear set added to the tail shaft that splits the gear? How reliable is this thing really? Could I install it myself with what I would say is above average mechanical ability but no experience in transmissions? They are selling it for just shy of $3K, are you aware of other places to find this cheaper?