F350 crew cab 6.9 idi

[jose.castillo.921025]

I want to get better fuel economy out of this truck what auto transmission could I use on it?
I'd like to make it manual but don't know what other parts I would need or which tranny would bolt up to it.
Help please


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[Waystro]

Put your truck in your Sig so we know what Trans engine etc you have. I'm assuming you have a C6 Automatic.
if you want to keep it an automatic then the E4OD is your best bet but you need a computer to run it.
if you want a manual than the ZF5 is the best option.

 

[jose.castillo.921025]

Yes it's a c6.

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[IDIoit]

any diesel ZF5 ford used from 90-97
a set of pedals
master & slave combo
flywheel and clutch.
maybe driveshafts...

 

[79jasper]

Diesel zf started in 88. Maybe some rare 87's.
I would go all out and run a standalone trans computer.

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[C_Luft]

Or you could add a gear vendors over drive and only really need to shorten your drive shaft, that way you have a bullet proof drive train, with no electronic crap to go wrong.

 

[jose.castillo.921025]

How much does that run??

1986 F350
crew cab
6.9 IDI

 

[jose.castillo.921025]

How much does a gear vendor run??

1986 F350
crew cab
6.9 IDI

1986 F350
crew cab
6.9 IDI

 

[FarmerFrank]

Is your truck 2wd or 4wd? I have a 2wd overdrive box that will bolt directly on a c6 but you will have to shorten the driveshaft

 

[C_Luft]

3000 for a brand new unit, 500-1500 on ebay/craigslist.

 

[jose.castillo.921025]

It's a 2 wheel drive. I'll check on eBay first.

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[IDIoit]

message FarmerFrank.
he has one forsale.
2wd for c-6
http://www.oilburners.net/forums/showthread.php?73227-FS-Doug-Nash-DNE2-overdrive-box

 

[Black dawg]

Is this truck 3.5 geared or 4.11? If 3.5 ratio, the mpg improvement may be very small.