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GMC V6 and V12 Engines Engine repair and rebuilding

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  #1  
Old May 26th, 2017, 05:24 PM
pasadenajim pasadenajim is offline
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Default Master Cylinder

6066ers, am looking to replace the "fruit jar" master cyl in favor of a dual + proportioning valve on the Power Brake sys from the factory. Does anyone have any suggestions re a particular part / manufacturer? I see the usual suppliers are advertising $285 for a complete assy but I think just going to the local NAPA might cut that number in half. Suggestions??? Jim Hyde
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Old May 29th, 2017, 06:32 PM
fishhunter679 fishhunter679 is offline
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Default Re: Master Cylinder

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Originally Posted by pasadenajim View Post
6066ers, am looking to replace the "fruit jar" master cyl in favor of a dual + proportioning valve on the Power Brake sys from the factory. Does anyone have any suggestions re a particular part / manufacturer? I see the usual suppliers are advertising $285 for a complete assy but I think just going to the local NAPA might cut that number in half. Suggestions??? Jim Hyde
Hey 1965 gmc dually here, I have been wondering that myself I think I need a need brake booster. Classic car parts.com out of kc, MO have a combo booster and master cylinder duel reservoir $300 plus shipping and handling. I went to Orielys and they only could pull up the single reservoir master cylinder.

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Old May 30th, 2017, 02:18 AM
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Default Re: Master Cylinder

Quote:
Originally Posted by pasadenajim View Post
6066ers, am looking to replace the "fruit jar" master cyl in favor of a dual + proportioning valve on the Power Brake sys from the factory. Does anyone have any suggestions re a particular part / manufacturer? I see the usual suppliers are advertising $285 for a complete assy but I think just going to the local NAPA might cut that number in half. Suggestions??? Jim Hyde
I used the power brake booster, dual master cylinder and proportioning valve from a 1975 GMC shorbed and it works great. But, I also swapped the entire break system with the 1975's brake parts (disc brakes and rearend)
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Old May 31st, 2017, 04:35 AM
donrm donrm is offline
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Default Re: Master Cylinder

I changed my 66 1/2 ton to a dual master cyl. I picked up one at a swap meet.
I believe it came out of a 1974 or so Chevy Impala. I had to change the length of the rod going into the rear of master cyl. I got mine for $10. There is a lot of 70's car parts that will work with little modifications. I got my proportioning
valve at a junk yard. donrm 1966 GMC 351E
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