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03-09-2024, 04:53 PM
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#1 |
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Registered User
Join Date: Aug 2014
Location: murfreesboro tn
Posts: 291
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72 Sierra Grande Brake ?
Afternoon Guys I'm running new Brake lines up front on my 72 GMC half ton 3/16 Brake line I went to my local NAPA store I got 2 front hoses, line size 3/16 one hose is a 3/8 tube nut the other hose is a 7/16 tube nut counter guy couldn't tell me why I have 2 different size tube nuts any body tell me why Thanks
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03-09-2024, 05:30 PM
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#2 |
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Registered User
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
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Re: 72 Sierra Grande Brake ?
From checking the parts on rock auto they left and right lines are different sizes. I couldn’t tell you why. I haven’t paid attention to what’s on my truck as it’s been so long ago that I replaced mine
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03-10-2024, 08:35 AM
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#3 |
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All stock and staying that way
  
Join Date: Jul 2003
Location: Elkland, PA
Posts: 2,118
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Re: 72 Sierra Grande Brake ?
They are indeed side specific:
https://store.fillingstation.com/det...KE_HOSERT.html https://store.fillingstation.com/det...KE_HOSELF.html  Orig GM part numbers: LEFT-6274063, 6264063, 6262737 3993921 RIGHT-6274064, 6264064, 6262738, 3993922
__________________
1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion..  1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor...  2017 Sierra 1500 SLT 4WD, Black, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 67k miles, 3.6, 8L45, 3.23 LS, 18" wheels |
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03-10-2024, 09:34 AM
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#4 |
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Registered User
Join Date: Aug 2014
Location: murfreesboro tn
Posts: 291
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Re: 72 Sierra Grande Brake ?
Morning Guys Thanks for your response so the 3/16 brake line tube nut size 7/16 goes on the left side front and 3/16 line tube nut size 3/8 goes on the right side why did the factory do that would it effect the braking? Thanks again
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