Is it worth it?
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Is it worth it?
I have a 86 f150 with the 4.9 I'm rebuilding. It has a dead c6 behind it. I have two options, get another c6 to put behind it, or put a AOD I have. Now, here is my delima, I looked at the article about the guy who put a AOD in place of his C6 in his bronco. Except I don't have access to anything fabercation wise. So can I do the swap without the fabercation? Is this swap possible that way? Or should I just get a c6?
The problem with getting another c6, is I have to spend money, whereas I have the AOD already.
Help!
The problem with getting another c6, is I have to spend money, whereas I have the AOD already.
Help!
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My thought would be to trade the AOD for a C6 and pop it in.
The newer trannys have computer connections that your C6
probably does not have. If you put in an AOD, do you also
need to have a computer from the same model vehicle that
the AOD came from? I don't know but it would be interesting
to find out.
Ed
The newer trannys have computer connections that your C6
probably does not have. If you put in an AOD, do you also
need to have a computer from the same model vehicle that
the AOD came from? I don't know but it would be interesting
to find out.
Ed
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Originally Posted by fastfordmobile
I think the computer controled trannys wont work right if they arent wired up
That would be my thought as well. Something else to
consider is when did the AOD trannys start using computer
control. If there were any models of AOD produced before
computer control came about, maybe that would work in
this situation.
Ed
Elder User
Joined: Mar 2004
Posts: 517
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From: Texas
Originally Posted by scottie2hottie
I don't think the AOD tranny is computer controlled, it's vacuum. At least the one I had was. It had vacuum lines and no computer. IMO go with the C6.
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Joined: Jun 2006
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From: I hate Chesapeake, Va.
my 86 f250 has an aod and i think the only electronics are for reverse lights, but i'll double check. aod's like to puke, though.
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It sounds to me like the general thought is to stick with the C6. My problem is , this is going in to a truck for daily driving, highway miles, and my brother needs the gas mileage. The guy who owned the truck before said he got 19 with the old set up (4.9/c6) as is what most people say with that setup. Can I crank more out of that? I'd like to see 20 or 21 mpg....
Thoughts?
Thoughts?
Post Fiend
Joined: Jan 2006
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From: North of Normal
There are a few things that you can do to help your mileage. I plan on putting in a electric fan set up in my truck after a engine rebuild. It will help with HP and Mileage due to the fact it puts less drag on your engine. Check your rear gear ratio Depending on the rear you might be able to go to a higher gear and pick up better gas mileage but there are draw backs it might limit how much you can tow and or haul. If it's strictly a driver with no hauling or towing changing gears can help.
BTW what carb will you run? a single barrel carb has large jets,2 barrel has slightly smaller jets,4 barrel has smaller front jets which if you keep your foot out of it will help also along with dual exhaust and good tune up.
Check out Clifford Performance I think thats the name for 6 cyl parts like intakes and headers for some of these parts.
Here's a link http://www.cliffordperformance.net/
Some of these modifications will not be cheap but they will pay for themselves over time.
BTW what carb will you run? a single barrel carb has large jets,2 barrel has slightly smaller jets,4 barrel has smaller front jets which if you keep your foot out of it will help also along with dual exhaust and good tune up.
Check out Clifford Performance I think thats the name for 6 cyl parts like intakes and headers for some of these parts.
Here's a link http://www.cliffordperformance.net/
Some of these modifications will not be cheap but they will pay for themselves over time.
Last edited by SuperSnake; Jan 31, 2007 at 10:50 AM.
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Originally Posted by Marty86
It sounds to me like the general thought is to stick with the C6. My problem is , this is going in to a truck for daily driving, highway miles, and my brother needs the gas mileage. The guy who owned the truck before said he got 19 with the old set up (4.9/c6) as is what most people say with that setup. Can I crank more out of that? I'd like to see 20 or 21 mpg....
Thoughts?
Thoughts?
My old '78 F150 with 4.9L and 3-spd + OD tranny would
get 23 mpg on a flat ground road trip. That was driving
at 55-60 mph with a light load. That didn't seem an
especially strong tranny but then I never used that truck
for anything really heavy duty... just dump runs, getting
firewood, and yardwork. Still, that was pretty good mileage
for a 3800 lb. full-sized truck.
My current truck is similar but is an '84 F250 4x4 with 4.9L
and T-18 4-spd. It is an "underdrive" tranny with a very
low 1st gear. I drive it like a 3-spd, starting out in 2nd
gear. It doesn't do too bad on the road, getting 17-18
mpg, but around town it is probably only getting 14-15
mpg. Not too sure what the gears are in this truck but
suspect that they are in the area of 3.90. Will check it
when the weather improves a bit.
Tires can also have a significant impact on your mpg. Tires
that are thinner and well inflated help a bit but don't get
carried away with this in wet or icy weather as it can also
reduce traction.
Ed
Elder User
Joined: Nov 2006
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From: Pensacola, FL
shift kit would definately improve the life of the tranny and should show improvements in mileage. factory settings are "slushy" so you get a smooth transition from one gear to the next, but this causes more wear on clutches and i'd assume less efficiency on the motor.
Postmaster
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From: Honkytonkville
Originally Posted by 82F1507.5
The early E4OD was vacuum and linkage controlled up until 1987. (They were troublesome though)