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Old 02-14-2021, 04:24 PM   #6
gmc684x4
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Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,218
Re: 69 k20 rockwell to np205 swap

When swapping i kept motor in stock 4x4 location and used drive shafts from donar vehicle that I swapped tranny tcase from
Is your front shaft a double cardigan joint ?
Most of the diff is a 420 tranny is shorter then a 465

Moving the engine forward you will have to watch for clearance issues with the front diff pumpkin which is why the engine is in the back position
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