1/2T Conversion - Front Suspension Question

Cummins Conversion & Builds

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Re: 1/2T Conversion - Front Suspension Question

Postby dazedandconfused » Tue Jun 18, 2013 1:18 pm

Weigh your truck the way it sits for us. SuperioRam what does yours weigh as it sits? Mine is right at 4200 with the steel wheels and big tires I have on it. My draglites weigh a third of what these wheels do.
Big Andy
1983 Dodge D150 that has been repowered with a 93 Cummins/518 running gear AKA The Ugly Duck! I would much rather build them then buy them.[
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Re: 1/2T Conversion - Front Suspension Question

Postby dazedandconfused » Tue Jun 18, 2013 1:26 pm

nitrofumes wrote:Thanks for the replies everyone!

Currently the truck has been lowered using ¾ ton van lower control arms with factory D150 springs. The rear however has been lowered by flipping the rear end on top of the spring. I'm running 235/75/15's on the front and 285/75/15's on the rear. The truck currently has an 8-3/4 with 3.23 gears and I feel comfortable that it will live behind the Cummins - provided I don't get the itch to bolt on slicks and see what it would run at the drag strip... Additionally I will be replacing the 727 with an A518 along with a good converter.

Image

The truck will never be used to haul anything serious at all. The most action it would probably see is toting around a small trailer with a lawn mower on it.

The reasoning behind the swap is first and foremost I like driving my truck, secondly fuel economy, and last power. With the basic pump mods/timing advance the truck will make more power than I would ever need and get reasonable fuel mileage as well, 22-24 mpg I'm estimating. I know my modded '92 CC 4x4 D250 gets 18-20 mpg with a stock A518. So the combination of reduced weight and taller gearing will potentially get me 22-24 mpg? That's the goal anyway.

Thanks for all advice!


Just for comparison I run a 9" with a 3.25 gear and a 518 and 31" tire. I have hit 22 mpg but my trans is loose and I'm blowing threw the convertor now. I would look for a 47rh or 47re and run a manual VB in the re. You wouldn't need the pcm and could run of and lockup off switches. About 70mph I'm blowing threw my trans and hitting governor.
Big Andy
1983 Dodge D150 that has been repowered with a 93 Cummins/518 running gear AKA The Ugly Duck! I would much rather build them then buy them.[
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Re: 1/2T Conversion - Front Suspension Question

Postby Knoberman » Sun Jun 23, 2013 6:56 pm

Call dpc, get a convertor for that thing, you won't regret it.
92 Cummins& a 518. installed in a 86 cclb f350 4x4
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Re: 1/2T Conversion - Front Suspension Question

Postby FIRST GEN. JAKE » Wed Feb 19, 2014 10:39 pm

I was planning on doing 1/2 ton sb swap but never could fine a clean one. I ended up buy a 89 srw d350 12v. I'm going to cut it down put a sb on it and lower.
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