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04-05-2013, 07:46 PM
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#1 |
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Registered User
 
Join Date: Mar 2002
Location: Dallas, TX
Posts: 555
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Master Cyl to Proportion Valve Tubing
I have a 68 3/4 ton 4x4 that now has a disk brake front end. I am using a 72 master cylinder, proportion valve and brake booster. My question is how should the tubes from the master cylinder to the proportion valve be connected. I have attached two different photos showing the difference.
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1968 GMC 305 V6 3/4 4x4 Stepside 06 Corvette Daily Driver Dallas TX |
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04-05-2013, 08:03 PM
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#2 |
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Registered User
Join Date: Dec 2012
Location: Chandler AZ
Posts: 1,149
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Re: Master Cyl to Proportion Valve Tubing
I just got through with my 3/4 disc conversion and installed the M/C and proportioning valve. According to the instructions I received, it should look like this. Keep in mind this isn't stock and is a disc conversion on a 70.
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1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9 |
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04-05-2013, 08:15 PM
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#3 |
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member #16
 
Join Date: Dec 1999
Location: Yuba City Ca.
Posts: 3,618
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Re: Master Cyl to Proportion Valve Tubing
Top pic looks correct for a 3/4 ton, for some reason they were opposite on 1/2 tons. front to front and rear to rear on halfs.
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john http://67-72chevytrucks.com/vboard/showgroups.php board vendors  http://www.flickr.com/photos/1745471...7602865984234/ |
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04-05-2013, 10:01 PM
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#4 |
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Cluster King
Join Date: Nov 2012
Location: Junction City, OR
Posts: 5,263
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Re: Master Cyl to Proportion Valve Tubing
Here is mine for a 1972 Cheyenne 1/2 ton 2wd.
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04-05-2013, 10:28 PM
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#5 |
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Registered User
Join Date: Jul 2012
Location: Ft Wayne Indiana
Posts: 1,204
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Re: Master Cyl to Proportion Valve Tubing
Here's my '71 K20
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71 K20 64 GMC mud truck |
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04-06-2013, 12:11 PM
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#6 |
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Registered User
Join Date: Mar 2002
Location: Dallas, TX
Posts: 555
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Re: Master Cyl to Proportion Valve Tubing
71K20chevy your setup looks original. Is that the case?
I had ordered new stainless tubes from Inline Tube and they look like yours. I had not seen that configuration before.
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1968 GMC 305 V6 3/4 4x4 Stepside 06 Corvette Daily Driver Dallas TX |
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04-06-2013, 09:03 PM
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#7 | |
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Registered User
Join Date: Jul 2012
Location: Ft Wayne Indiana
Posts: 1,204
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Re: Master Cyl to Proportion Valve Tubing
Quote:
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71 K20 64 GMC mud truck |
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