Dually Conversion, I did it Alan.

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Dually Conversion, I did it Alan.

Post  Tennessee Bullitt on August 7th 2012, 10:50 pm

Ok after some grusome work it's done, I switched my 95 f350 from FI to Carb. I still am getting a better idea how this is all working cause I have used the factory dizzy and harness and was even able to use the factory fuel pumps. I will get some pics for all to see but here is what I have in my junk pile....

Edelbrock 75cc 6067 heads with a little rubbing on them.
Weiand stealth manifold matched.
Holley 750 vac secondary carn with lots of mods
Custom Lunati hyd cam.
Headman long tube headders

With the bottom end my compression should be at exactly 10.3 to 1

I love how all factory stuff was reused and how stock the truck looks.

One question for you all is what would be a good timing setting for this kind of compression with pump gas? I figure 32 or 34 seems good right now.
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Re: Dually Conversion, I did it Alan.

Post  cool40 on August 7th 2012, 11:10 pm

have you put a timing light on it yet? when i changed my 86gt from FI to carb the FI diz would'nt advance so i changed it too.when i changed the diz out the FI fuel pump would'nt run anymore Rolling Eyes i found a plug on the firewall where i put a jumper wire to make it run with the key on.
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Re: Dually Conversion, I did it Alan.

Post  Tennessee Bullitt on August 8th 2012, 12:21 pm

Yea I got it all set I was looking what would be a good total timing setting.
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Re: Dually Conversion, I did it Alan.

Post  83-88T-Bird Guy on August 17th 2012, 7:38 am

Ernie:
How did you reduce your fuel pressure from 40 to 7 psi? Standard regulator ?

Is your stock ECU still hooked up and that is what is firing your dizzy ?
I can't remember if yours has the E4OD or manual trans. If it's an automatic, I assume the ECU shifts the tranny ?

Post some pics up as I am curious how you did it. Very Happy

BTW: I am getting my 95 Dually road ready with the slide in camper.
I have to hook up the 2nd trans cooler and my temp guage. The trans fluid temps are my concern right now.


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Re: Dually Conversion, I did it Alan.

Post  Tennessee Bullitt on August 17th 2012, 10:00 am

I had to double regulate the fuel pressure. I am using factory hookups for ignition, trans shift and all Yea its a E4OD. I will get some pics up for you. I am pretty pleased with it.
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Re: Dually Conversion, I did it Alan.

Post  83-88T-Bird Guy on August 17th 2012, 11:28 am

I am amazed your factory ECM is shifting the trans, seeing as how it needs a TPS to calculate line pressure and shift points.
Encouraging news for sure.
I am studying up on what it will take to hook up a C-6 trans if my E4OD ever takes a dump pulling everything.

For now I will stick with the EFI and I might play with a TwEECer to adjust the tune and see if I can pick up some mpg. Right now it gets worst mileage than my 84 Crew Cab 460 carbed truck. Crying or Very sad
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Re: Dually Conversion, I did it Alan.

Post  Diggindeeper on August 17th 2012, 4:20 pm

Make sure it's not just running on limp mode. You WILL be rebuilding the trans sooner than later if that's the case. It probably will not go in or stay in lockup in limp. At least that was my experience with limp mode.
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Re: Dually Conversion, I did it Alan.

Post  Tennessee Bullitt on August 17th 2012, 5:59 pm

No its not in limp mode from what I can tell. I turned the OD off and went down the road and all was good so in the middle of driving I turned the OD back on and it shifted back up into OD. I was thinking about seeing if I can rig the TPS to the carb but that will be a later date. The shifting is a little erratic at 1,000 to 1500 rpms when it tries to shift but if you put a load on it it will shift just like it did before. This is definatly going to be intersting to study how all this works.
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Re: Dually Conversion, I did it Alan.

Post  Tennessee Bullitt on August 29th 2012, 6:23 am

Here are some pics Alan, I got a video, as soon I can get it uploaded I will post it.......



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Re: Dually Conversion, I did it Alan.

Post  83-88T-Bird Guy on August 29th 2012, 4:24 pm

Looks great !
Got that military look paint job.

You need to get it to US60 one of these Sat. nights and see what she'll run. Wink
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Re: Dually Conversion, I did it Alan.

Post  yellowhorse7 on August 29th 2012, 4:44 pm

Nice!!!
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Re: Dually Conversion, I did it Alan.

Post  61coon on August 29th 2012, 6:30 pm

Looks awesome man! Can't wait to hear what kind of mileage you are getting. I know it's your truck,but those valve covers would look sweet if they were painted the same color as the truck....
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Re: Dually Conversion, I did it Alan.

Post  Tennessee Bullitt on August 30th 2012, 6:41 am

I am going on a trip back to east TN so I will get to see what kinda of gas milage I am gonna get. I plan on getting it to the track when I get back. I am gonna get the ultra street avenger carb. It's got 4 coner idle. I will look u up then Alan.

I thought about making it all the same under the hood but I couldn't resist on having the Wow factor when I pop the hood. I have the block and the valve covers the same.
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Re: Dually Conversion, I did it Alan.

Post  Tennessee Bullitt on September 26th 2012, 5:15 pm

I'm headed out to ohio valley tonight for some test and tune. Time to see what I can get this ol classic to do. I will tell ya that I have found some good info to share but I wanted to run it first and then share all at once......... keep an eye out Alan. Very Happy
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Re: Dually Conversion, I did it Alan.

Post  83-88T-Bird Guy on September 27th 2012, 3:29 pm

Do any good at the Valley Ernie ?

I might have to hop up my purple dually like you did yours.
Then I'll have gobs of power to pull the slide in camper and a 10K lb. enclosed trlr.
Got to get the E4OD out and put a C-6 in first tho.
The lockup convertor is slipping too much at cruise speeds and is really getting the fluid hot. Mad
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Re: Dually Conversion, I did it Alan.

Post  67460 on September 27th 2012, 4:07 pm

Look Cool, Nice Job!
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