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Old 07-01-2020, 12:17 PM   #9
lolife99
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Join Date: Nov 2002
Location: Mid-MO
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Re: 1989 Suburban 2WD 3/4 to 1/2 Swap?

Quote:
Originally Posted by SCOTI View Post
The upper a-arm studs are likely larger on the 3/4 ton so the shafts might need to be drilled out to utilize the 1/2 ton arms as is.
.
The other option would be to put a 1/2-ton ballpoint in the 3/4-ton UPPER a-arm.
You can’t do that with the lower a-arm because the 3/4-ton ballpoint hole is larger than the 1/2-ton version.

I would still not swap the crossmember itself.
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Convert to disc brakes.
http://67-72chevytrucks.com/vboard/s...d.php?t=444823
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