Trucks back from the shop, 4.56 installed!
All Star
Joined: Nov 2011
Posts: 802
Likes: 0
From: Kennedale, Texas
Finally got my truck back from the shop to get 4.56 gears installed. Im about half way through my break in period and im very happy with the results so far. Avoiding mud pits and keeping my foot off the gas has been a big challenge but i only have about 200 miles left till i can really test the new ratio. I also found out that the previous owner installed an auburn LSD in the rear so thats less money out of my pocket. Overall Im glad i did it and ill never go back.
Professional
Joined: Aug 2008
Posts: 249
Likes: 0
From: Red Deer, Alberta
1 full rotation of driveline / rotation of tire. Have you noticed a big difference in RPMs while at highway speed? to be doing 70mph wouldnt you have to be at 2500 rpm, or did the larger tire, already offset the difference made in gearing
Veteran
Joined: May 2012
Posts: 405
Likes: 0
it's not that high... I'm just under 2400rpm at 70 with 30.5" tires so 35's would be down just below 2100.
Thread Starter
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Professional
Joined: May 2010
Posts: 242
Likes: 0
From: Lemoore, CA
Im gonna have to go out and drive with a pen and paper to get all my rpm's because i dont know for town driving. I do know that its running right at 2k at 60mph.
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Professional
Joined: May 2010
Posts: 242
Likes: 0
From: Lemoore, CA
The 35in tires on stock 3.55 made the truck gutless. Hills were my worst enemy and i could forget about towing anything. Doing the gears while your rebuilding the axles is a great idea because your already gonna have everything torn apart. If you were taking it to a shop they might even give you a discount on labor sense the pumpkin will be taken out anyway.
All Star
Joined: Nov 2011
Posts: 802
Likes: 0
From: Kennedale, Texas
I meant to say sig not dog btw. I'm just wondering what's the cost of the gears for a 4x4? I'm not concerned about the rpms
Registered User
Joined: Dec 2012
Posts: 24
Likes: 0
All im saying is that it would have been good to have some sort of reasoning behind it. 4.56s may not be right for some people in what they do with there trucks. Me im just happy i can set them up myself and dont have to pay a shop 6 or 700 just for the install.
Captain
Joined: Aug 2011
Posts: 723
Likes: 8
From: Dublin, OH
wish i could do that, id have new gears in there next week if i didn't have to pay someone to do it...
Registered User
Joined: Dec 2012
Posts: 24
Likes: 0
install and set up is not that difficult. just have to be tedious about it. tools on the other hand they are expensive.