400 mileage
Post Fiend
Joined: Mar 2011
Posts: 8,501
Likes: 4
From: Lynchburg, VA
Somewhere in the 7-9 range city and 11-14 range highway. Depends on engine condition, rear end ratio, 4x2 vs. 4x4, and transmission, of course. Driving style will also have a profound effect.
Post Fiend
Joined: Oct 2009
Posts: 8,674
Likes: 0
From: town of less than 200 ppl
When you are looking at a 70's model Ford pickup, you throw miles per gallon out the window...
Remember,"it's not miles per gallon you need to be concerned about, it's SMILES per gallon"
Remember,"it's not miles per gallon you need to be concerned about, it's SMILES per gallon"
Cargo Master
Joined: Apr 2009
Posts: 3,038
Likes: 4
From: South west Idaho
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Post Fiend
Joined: Oct 2009
Posts: 8,674
Likes: 0
From: town of less than 200 ppl
My buddy daily drives a 78 F250 4x4 with a pretty stout 400. He claims to get 10 when he isn't romping on it, but an average of 6-8.
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Cargo Master
Joined: Apr 2009
Posts: 3,038
Likes: 4
From: South west Idaho
I had one when it was new ,79 / 150 super cab, back when you could get good fuel,which is hard to find now. It did for a couple of years get,13.5 mpg , but as it got older and fuel got worse ,it was down to about 9 mpg . I'v had others since then and they were bad mpg . I had a 460 that was as good if not better on gas as the 400 was after they got to be old trucks.
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Moderator & parts slinger
Joined: Feb 2007
Posts: 50,158
Likes: 5,786
From: S/W Missouri, Polk county
Enough to make you cry at every gas station you have to stop at. All the above things mentioned will affect how hard and long you cry.
Really look at why you are getting this truck, cause a "cool daily driver" IS NOT THE BEST REASON when it comes to a weekly fuel bill.
I get 6 to 8 on a good day with a tail wind and "I'm not tailgating", "I'm drafting" behind anything bigger than me, LMAO.
Really look at why you are getting this truck, cause a "cool daily driver" IS NOT THE BEST REASON when it comes to a weekly fuel bill.
I get 6 to 8 on a good day with a tail wind and "I'm not tailgating", "I'm drafting" behind anything bigger than me, LMAO.
Posting Guru
Joined: May 2010
Posts: 1,867
Likes: 3
From: Alton, MO
Boy you're optimistic! I would be 1 happy camper if I got 10 out of my 460 BUT in fairness to the 460 I love stepping into it every time I get in the truck. 
Again it is smiles per gallon & I get plenty. Nothing like getting sideways for no reason whatsoever than putting my foot into it.
Again it is smiles per gallon & I get plenty. Nothing like getting sideways for no reason whatsoever than putting my foot into it.
Post Fiend
Joined: Oct 2009
Posts: 8,674
Likes: 0
From: town of less than 200 ppl
Boy you're optimistic! I would be 1 happy camper if I got 10 out of my 460 BUT in fairness to the 460 I love stepping into it every time I get in the truck. Again it is smiles per gallon & I get plenty. Nothing like getting sideways for no reason whatsoever than putting my foot into it.
Again it is smiles per gallon & I get plenty. Nothing like getting sideways for no reason whatsoever than putting my foot into it.
Post Fiend
Joined: Oct 2009
Posts: 8,674
Likes: 0
From: town of less than 200 ppl
That is also a 2wd with a t18 and 3.73 rear. Quite a big difference.
Posting Guru
Joined: Dec 2009
Posts: 2,134
Likes: 1
From: Mississippi
. My '76 4x4 w/360 gets 12-12.5 mpg on the hwy, guess I shouldnt be too unhapy with that