Hello everyone
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New User
Joined: Jul 2002
Posts: 11
Likes: 0
From: Daytona Beach USA
Hello everyone
I wanted to say hello to everyone out there. I've been lurking on this board for a while, but thought I should at least register and say hi!
I'm currently buying a 88 F150 that has quite a bit of work done to it. 460 w/C6, haltech, 10:1, full exhaust, blah blah... It gets ~12 mpg currently, and is running a 3.55? rear end (can't remeber exactly, but it's around that ##)
Wondering how hard a swap to a 3.08 rear gear might be. I mechanically inclined, but I've never done anything like that. If it would be better to take it somewhere, what do you think it might cost me, on average. I'm just looking to get a little better mpg outta this thing if possible, and I'm thinking it should still pull quite hard being that the motor is built.
Thanks for any suggestions, I'll try and post some pics of my new truck asap
I'm currently buying a 88 F150 that has quite a bit of work done to it. 460 w/C6, haltech, 10:1, full exhaust, blah blah... It gets ~12 mpg currently, and is running a 3.55? rear end (can't remeber exactly, but it's around that ##)
Wondering how hard a swap to a 3.08 rear gear might be. I mechanically inclined, but I've never done anything like that. If it would be better to take it somewhere, what do you think it might cost me, on average. I'm just looking to get a little better mpg outta this thing if possible, and I'm thinking it should still pull quite hard being that the motor is built.
Thanks for any suggestions, I'll try and post some pics of my new truck asap
Elder User
Joined: Jan 2002
Posts: 555
Likes: 0
Hello everyone
Hello,
I would definately take it to a repair shop that is familiar with differentials. A do it yourselfer can get into a whole lot of crap trying to set those gears. And I mean it!
Cost can depend on whether you supply used ring and pinion gears or buy new ones. I should expect labour in the neighbourhood of around 400-600 dollars.
What size tires are you running, you may be able to get a little mileage gains from larger diameter tires. Later....:-)
I would definately take it to a repair shop that is familiar with differentials. A do it yourselfer can get into a whole lot of crap trying to set those gears. And I mean it!
Cost can depend on whether you supply used ring and pinion gears or buy new ones. I should expect labour in the neighbourhood of around 400-600 dollars.
What size tires are you running, you may be able to get a little mileage gains from larger diameter tires. Later....:-)
Post Fiend
Joined: Nov 2001
Posts: 14,947
Likes: 6
From: Topsfield, MA
Hello everyone
You'll lose some acceleration and power if you go down to 3.08s. Us men don't like to lose power now, its not often that we go backwards.
Primary rig is Green Thunder:
95' F-150 XLT 4x4, 302, 5 spd, MSD 6A, Sunroof, CD player with 2 10" subs and some 32" BFG Muds
.
Check out my Gallery for a look-see.
Then theres:
99' Mustang GT 4.6L
88' F-250 Superduty 4x4 351/c6
95' Mercury Cougar 4.6L V-8
80' E-350 300/6 with a
3 spd column shifter. Top speed is 65mph, Go Baby Go!
Primary rig is Green Thunder:
95' F-150 XLT 4x4, 302, 5 spd, MSD 6A, Sunroof, CD player with 2 10" subs and some 32" BFG Muds
.Check out my Gallery for a look-see.
Then theres:
99' Mustang GT 4.6L
88' F-250 Superduty 4x4 351/c6
95' Mercury Cougar 4.6L V-8
80' E-350 300/6 with a
3 spd column shifter. Top speed is 65mph, Go Baby Go!
