75 F150 ?'s
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Senior User
Joined: Nov 2004
Posts: 324
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75 F150 ?'s
Hey guys!
Since the price of gas is $3.26 in my area, what can I do to get better mileage out of my 390? It has 235/75/15's and 3.00 rear gears in the diff. I only took it out on the highway one time and it turned 2800 rpm at 75. I got about 14 mpg or so. It wasn't bad for a 390. But it got 8 to 10 when I drove it all thru high school.
Is it possible to change the gears in the C-6 trans. or is it impossible?
I'd like to put a overdrive trans in behind the 390.
Also, is my truck worth restoring or not? It's a Explorer.
Thanks
Since the price of gas is $3.26 in my area, what can I do to get better mileage out of my 390? It has 235/75/15's and 3.00 rear gears in the diff. I only took it out on the highway one time and it turned 2800 rpm at 75. I got about 14 mpg or so. It wasn't bad for a 390. But it got 8 to 10 when I drove it all thru high school.
Is it possible to change the gears in the C-6 trans. or is it impossible?
I'd like to put a overdrive trans in behind the 390.
Also, is my truck worth restoring or not? It's a Explorer.
Thanks
Post Fiend
Joined: Jan 2006
Posts: 5,037
Likes: 9
From: Kasson, Minnesota
14 MPG is good for a 390. Overdrive won't get you that much in MPG. If your lucky, you may get an improved 2 or 3 MPG which doesnt' justify the cost of doing an overdrive. Getting a good overdrive system in these trucks can cost up to $2500 or more and you could get a nice small car for that. And it would double your MPG issue. That's where the real savings are, IMO.
Senior User
Joined: Sep 1999
Posts: 180
Likes: 0
From: Calderwood
Originally Posted by Jermafenser
14MPG is pretty good.
Drive a small car and leave the F150 at home.
Drive a small car and leave the F150 at home.
