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Old_iron · 09-03-2019, 06:38 PM

I discovered the problem. The front drive shaft is binding due to the 4" spring lift installed last year. Attached are some pictures showing the worst that the problem is with the axle in a certain position. Also showing the impact points at the joints.

As you can see it's not even close. Everyone said that the front axles are fine for a 4 inch lift. Maybe the 68 GMC K20s are different, possibly because it had a very heavy V6 in it stock which made it ride lower??

What do I do? Grind some relief into the yoke parts? Find a different driveline from a later model?

09-03-2019, 06:38 PM	#17
Old_iron Registered User Join Date: May 2016 Location: Idaho Posts: 87	Re: Is this supposed to happen with a transfer case? I discovered the problem. The front drive shaft is binding due to the 4" spring lift installed last year. Attached are some pictures showing the worst that the problem is with the axle in a certain position. Also showing the impact points at the joints. As you can see it's not even close. Everyone said that the front axles are fine for a 4 inch lift. Maybe the 68 GMC K20s are different, possibly because it had a very heavy V6 in it stock which made it ride lower?? What do I do? Grind some relief into the yoke parts? Find a different driveline from a later model? Attached Images __________________ 1968 GMC 3/4 Ton 4x4 K20 / 2500 1971 Chevrolet Chevelle Malibu