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Old 06-07-2019, 10:55 AM   #1
68gmsee
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Finally thinking of drum to disk conversion

Thinking of converting this old 68 GMC to 6 lug disk brakes as soon as I can free up some cash. While looking online I see prices vary but it seems that around $700 or so ought to do it. There's a note on some kits that say "original wheels may not work."

Anybody know what that means? I'd like to keep the original 6 lug wheels all around if possible.
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Old 06-07-2019, 11:56 AM   #2
68Gold/white
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Re: Finally thinking of drum to disk conversion

Beware, not all 6 lug wheels will work with the 6 lug disc conversion. You might post a picture of both sides of your wheels here. Experts here will know if your wheels are good to go, for disc brakes...
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Old 06-07-2019, 12:08 PM   #3
Warrens69GMC
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Re: Finally thinking of drum to disk conversion

or source a set of 6 lug rallyes for your truck.
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Old 06-07-2019, 01:25 PM   #4
68gmsee
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Re: Finally thinking of drum to disk conversion

I'll do some more research. It's not completely stock now since I added power steering and power brakes, but I wanted to keep it as stock looking as possible by using the original rims. May have to rethink that.
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Old 06-13-2019, 10:42 AM   #5
mattfranklin
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Re: Finally thinking of drum to disk conversion

Folks here have really documented this topic. I opted to switch the crossmember on my '70 to a '72 so it would take all stock '72 disc brake parts. A lot of work. I'm happy with the results, but not sure I'd do it that way again. I did it to also get 5-lug wheels.

But you can use a later rotor and keep the six-lug wheels. Others far wiser than I have amazingly documented everything somewhere on this site.
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Old 06-13-2019, 12:00 PM   #6
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Re: Finally thinking of drum to disk conversion

This is the one:
http://67-72chevytrucks.com/vboard/s...d.php?t=456889
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