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Old 10-02-2018, 09:28 AM   #1
BFD305
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Join Date: Aug 2017
Location: Greeley, CO
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1963 K10 Axle Swap - When did the rear perch width get wider?

Hello All - Well I ventured out and picked up a '63 K10. Excited to get started. It is disassembled right now, so I figure its a good time to swap out the closed knuckle front and get some disc brakes too.

I found both front and rear assemblies from a '72 K10. I know the front will just bolt on, but not sure on the back.

What year did the spring perches get wider?

I have searched but have not gotten a definitive answer. Not a lot on these 60-66 K10's.

Thanks!
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Old 10-02-2018, 09:45 PM   #2
Mike C
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Re: 1963 K10 Axle Swap - When did the rear perch width get wider?

1/2 and 3/4 tons got wider in '73. Compared to the 69-72 trucks. I THINK 67-68 same spring perch width but they have unique springs.

I know zip about trucks earlier than that.

One ton 4x4's kept the same narrow spring perch spacing as the 67-72 trucks through the end of the square bodies.
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