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Old 06-01-2012, 07:45 PM   #23
Dieselwrencher
6>8 Plugless........
 
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Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,143
Re: cummins swap help

If mileage isn't a huge concern, then an A518 from a dodge cummins is the way you can go cheaply. This is basically a 727 with an over drive, and a stronger case. That's the route I'd go for cheap. And the 727s and A518s will not require a disc in the torque converter because they are not lock up. These torque converters are a lot cheaper than one for a lock up trans. If you set up the truck right as far as gearing, you can still acieve great mileage. Dodge used 3:07's with most of the 727s. If your truck has a chevy D70HD, I'd try to find 3:73's, but 3:55s or higher would be better for you.
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1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread
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