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Old 08-27-2016, 08:18 PM   #3
57taskforce
All about them K’s
 
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Join Date: Jun 2014
Location: Land of Entrapment
Posts: 6,589
Re: 8100/Allison in a 4x4 71???

I'd ditch that nv 261/263xhd transfer case in a heart beat if I were you. I've rebuilt a few of them and in my honest opinion they are junk. the other problem is that the case will have the wrong front drive shaft drop for your 71 Dana 44. I'd be willing to bet someone has but a np205 behind an Alison but I've never looked into it first hand. The 8.1 will fit just as any other big block swap into a 67-72 4x4. I plan to swap the 8.1 from my suburban into my k/20 when I can convince my wife to get another suburban. Can't wait to see yours take shape.
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Tyler
'57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888
'72 K20 Cheyenne: 5” lift, 35’s, front dana 60 blah blah blah… http://67-72chevytrucks.com/vboard/s...d.php?t=662879
‘69 K10 SWB: 4” lift 33”s… in a million pieces http://67-72chevytrucks.com/vboard/s...d.php?t=805206
'98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 35x12.5x20’s

Last edited by 57taskforce; 08-27-2016 at 08:51 PM.
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