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Old 04-08-2021, 05:24 PM   #1
desert-rat
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Help with brake parts.

So I have disk brakes from a '71 on my '69 GMC. When I'm buying parts like the booster, master cylinder, brake lines, would I just order parts for a '71?? Thanks.
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Old 04-08-2021, 05:41 PM   #2
68Gold/white
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Re: Help with brake parts.

Yes. The parts you mentioned will have to be for a 71 (or 72). The steel brake lines on the frame come out in a different spot, where attached to the calipers vs. where they were for drum brakes...

If this conversion has already been done by someone else, there's a chance they may have done it a little differently...beware. You might post pictures of your calipers, hoses, and such before you buy any parts to make sure...
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Old 04-08-2021, 07:38 PM   #3
jocko
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Re: Help with brake parts.

also note that some reuse the original 1/4" front lines for the disk brakes - which still works - but factory for the disk front brakes is 3/16" lines.
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Old 04-08-2021, 08:47 PM   #4
desert-rat
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Re: Help with brake parts.

Quote:
Originally Posted by 68Gold/white View Post
Yes. The parts you mentioned will have to be for a 71 (or 72). The steel brake lines on the frame come out in a different spot, where attached to the calipers vs. where they were for drum brakes...

If this conversion has already been done by someone else, there's a chance they may have done it a little differently...beware. You might post pictures of your calipers, hoses, and such before you buy any parts to make sure...
I got the disk brakes, upper/lower control arms, spindles, and steering linkages from my buddies '71 or '72 donor truck. So right now there is no brake lines. I need all new everything brake related otherwise. Seems easy enough. Just order brake related parts for 71 or 72.
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Old 04-08-2021, 08:48 PM   #5
desert-rat
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Re: Help with brake parts.

Quote:
Originally Posted by jocko View Post
also note that some reuse the original 1/4" front lines for the disk brakes - which still works - but factory for the disk front brakes is 3/16" lines.
Thanks for that info. I'll definitely note that.
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Old 04-08-2021, 08:55 PM   #6
BigBird05
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Re: Help with brake parts.

You might see if you can get the brake line mounting tabs so you can route the new lines in the factory location.
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