Did anyone do these things?
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Post Fiend
Joined: Jan 2006
Posts: 14,941
Likes: 4
From: North of Normal
Did anyone do these things?
I have done a little research on ways to help my F 250 to get better gas mileage. I don't expect a big jump in mileage. But here is what I have come up with,and wanted to know if anyone here has done the same and what the results were?
My truck is a 76 F250 with a 390 2 barrel, 4 speed trans ( I don't know which one) 4.10 rear gear,tires 33x12.5R16.5
What I planned.
1.factory 4 barrel intake and 600 cfm Edelbrock carb
2.Dura spark 2 dist to replace the points dist.
3.new timing gear and chain set.
4.Electric Fan for the rad.
5.GM Alternator conversion.
6.Dual exhaust.
My truck is a 76 F250 with a 390 2 barrel, 4 speed trans ( I don't know which one) 4.10 rear gear,tires 33x12.5R16.5
What I planned.
1.factory 4 barrel intake and 600 cfm Edelbrock carb
2.Dura spark 2 dist to replace the points dist.
3.new timing gear and chain set.
4.Electric Fan for the rad.
5.GM Alternator conversion.
6.Dual exhaust.
Last edited by SuperSnake; Apr 23, 2008 at 03:14 PM. Reason: I forgot one thing.
Lead Driver
Joined: Nov 2000
Posts: 6,637
Likes: 349
From: Albuquerque
Probably wont see a big change but...
The 4V carb could get better milage with a light foot.
Electric fan good (15") but be sure to have some kind of shroud. Mine doesn't run at all in the winter.
The 4V carb could get better milage with a light foot.
Electric fan good (15") but be sure to have some kind of shroud. Mine doesn't run at all in the winter.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
All 1973/76 FE equipped F100/350's came with fan shrouds (there were two types).
The shroud used with standard or xtra cooling and/or with A/C is still available from Ford.
D3TZ8146C / MSRP: $93.30 / ftepartsguy.com price: $67.18.
The Super Cooling fan shroud is obsolete.
The shroud used with standard or xtra cooling and/or with A/C is still available from Ford.
D3TZ8146C / MSRP: $93.30 / ftepartsguy.com price: $67.18.
The Super Cooling fan shroud is obsolete.
Posting Guru
Joined: Apr 2007
Posts: 1,191
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From: Lockport, NY
I have a similar set-up as well, not awful on gas if a go light on the skinny pedal (but that's hard to do!) I do a lot of around town driving, I have also noticed that the higher octane seems to last better? maybe its just my imagination?
Post Fiend
Joined: Apr 2008
Posts: 8,261
Likes: 15
From: Big Sky Country
Pretty much what i get too, i average around 9mpg, 87 octane just hit $3.59/gal here today so the old girl doesn't see as much road time as she used to.
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Post Fiend
Joined: Jan 2006
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From: North of Normal
I think when I get my engine pulled to do rebuild it I might try to see if they have a economy cam or at the very least get a cam that has more torque than HP.
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Senior User
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the only thing I can add is my 460 is being rebuilt as we speak, and my builder said the pre-72 'straight up' timing set will bring my torque down in the rpm range AND give me slightly better mileage-- he also said I'll still easily pass CA smog.. no downside- and cheap! Maybe there's a similar cam timing alteration issue with pre/post smog 390's(?)...
Postmaster
Joined: Oct 2005
Posts: 3,034
Likes: 1
From: NJ
I get about 9 mpg with a 2 barrel and true duals. I think I made a big mistake on getting headers too. If you go to duals I would say maybe stick with manifolds, but that is just my opinion. I slightly regret my header upgrade. Gas is $3.40/gallon here.
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Post Fiend
Joined: Jan 2006
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From: North of Normal
My truck was a 360 new,I was told by the PO that he bought it and that owner said the engine was swapped out for a 390 and converted over to points.
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Post Fiend
Joined: Jan 2006
Posts: 14,941
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From: North of Normal
I need to find a a set of exhaust manifolds for my truck if I can find them.