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Old 02-12-2012, 08:47 PM   #14
yjheep
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Join Date: Feb 2012
Location: st. louis mo
Posts: 58
Re: 88 crew cab 4x4 single wheel conversion with 02 Cummins/allison auto

Quote:
Originally Posted by gtdownonit View Post
I did 6 inches of lift by springs with the added leaf to the front for the cummins. I also did a 1 inch body lift for a bit more room under the cab for the tranny. With the 6 inches The 37s fit great. I also have 4.56 gears and they need to be closer to 3.72. Top speed is 83 MPH with an NV4500.
That's why I'm waiting for the six speed it has 0.61 in the second overdrive (sixthed gear). I Like alot of room in the fenders over the tires the 12" over 38"s is the look I'm after. I'm going to keep my 8" springs I think under the truck for now since it's looking like I'm going to need a 3" body lift to clear the big ass 545. I'll make that decision after I get the motor and trams mocked up. I would rather not use a body lift. I guess I'll find out when I get the trans in.
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