Gearing
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Freshman User
Joined: Oct 2013
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Gearing
So first off I know this is a stupid question and I know I can search it but just wanna get some feedback from y'all so here we go
1. What's gears are in my truck now I got a f150 4.9l EFI 4x4 with the 8.8 in the rear I can't read the tag on the diff cause it beyond rusted and coated in god only knows what
2. I plan on lifted it and putting 37's up under it and wanna know the best gear ratio I should run for them to get alright gas mileage cause I know I ain't gonna get the best and good to go wheeling cause it my daily and my toy
Thanks and again I'm sorry I know I could search all this but I just wanna get some feedback and thoughts from y'all
1. What's gears are in my truck now I got a f150 4.9l EFI 4x4 with the 8.8 in the rear I can't read the tag on the diff cause it beyond rusted and coated in god only knows what
2. I plan on lifted it and putting 37's up under it and wanna know the best gear ratio I should run for them to get alright gas mileage cause I know I ain't gonna get the best and good to go wheeling cause it my daily and my toy
Thanks and again I'm sorry I know I could search all this but I just wanna get some feedback and thoughts from y'all
Junior User
Joined: May 2011
Posts: 74
Likes: 0
From: roxboro N.C
ok someone will come along with more experience. should be a tag with the codes trim,axel, and so on. only other way is to jack it up and turn the wheel and count the drive shaft revolutions
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Freshman User
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Yeah on the bottom of the tag it says axle but all it says under it 1Q whatever that means haha
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From: roxboro N.C
Logistics Pro
Joined: Mar 2012
Posts: 3,507
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From: Oregon
3.55's with 37's would be TERRIBLE. But thats not all. The TTB front axle simply cannot handle 37's. Don't let anyone tell you otherwise. I had 35's on mine and it ate balljoints, universals and could not stay aligned for more than 500 miles. And with 37's, there shouldn't be any discussion of fuel mileage other than it will suck. You are going to have to solid axle swap with a 6" lift and 4.56, possibly 4.88, gears as well as simply putting fuel economy out of your mind to have a reliable offroad toy that could be driven when your done wheeling. Your best bet for an offroad toy with 37's is a Dana 60, Sterling 10.25 swap, which will likely require a donor truck.
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Joined: Mar 2013
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From: Hellinois
Lead Driver
Joined: Feb 2013
Posts: 5,006
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From: Roseville, MN
"Suck" is not a very quantifiable term. What sucks for some people might be fine for others. Also engine and trans both make a huge difference.
I had 3.55s and 33" tires on my '95 F-150 with a 351 and E4OD. That combo worked great for me. I hauled 11,000 lb loads (total including the weight of the truck) in the Rockies with that setup and was perfectly satisfied with it. It certainly wasn't as fast as it would have been with 4.10s, or a 460. But for me that was the right setup.
I had 3.55s and 33" tires on my '95 F-150 with a 351 and E4OD. That combo worked great for me. I hauled 11,000 lb loads (total including the weight of the truck) in the Rockies with that setup and was perfectly satisfied with it. It certainly wasn't as fast as it would have been with 4.10s, or a 460. But for me that was the right setup.