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07-07-2018, 09:43 AM | #1 |
Registered User
Join Date: Jul 2018
Location: Memphis, TN
Posts: 2
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1972 GMC Long bed lowering problem
I lowered my 72 GMC longbed 3 inches front and back. Used blocks and 4 degree shim on rear. I am hearing a chirping sound from I believe the carrier bearing. Rear driveshaft is tight against bearing. Should I soften the shaft and if so how much?
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07-10-2018, 07:04 AM | #2 |
Senior Member
Join Date: Jan 2011
Location: Hayes Va
Posts: 4,569
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Re: 1972 GMC Long bed lowering problem
A 3 inch block is to much in my opinion. Blocks move the rear forward (on trailing arms) and I assume that is what you have since the shaft is binding up. You can cut it but the best way to do this would be a set of 3" springs. 4 degrees is a lot for just a three inch drop. Have you checked the u-joint angles?
Jimmy
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60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic |
07-10-2018, 07:09 AM | #3 |
Registered User
Join Date: Jul 2018
Location: Memphis, TN
Posts: 2
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Re: 1972 GMC Long bed lowering problem
I will look into buying springs and getting rid of the blocks. Seems like the springs will push things forward as well to some degree.
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