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02-18-2017, 02:46 PM
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#1 |
 Drives: 2010 Camaro 2SS LS3 Join Date: May 2012
Location: Michigan
Posts: 143
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Master Cylinder Brake Line size/thread?
This is driving me nuts. I have a B&M line lock and I cant find the Master Cylinder fitting thread size anywhere.. the standard size is too fine... these are more coarse thread.
2010 Camaro LS3 I know I could spend $200 on a kit that has it but $50 for the lock and $10 in fittings should be all I really need.. I know the line lock is 1/8 npt but what is the OEM master cyl output? any help would be appreciated 
Last edited by dookie454; 02-18-2017 at 04:44 PM. |
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07-17-2017, 08:26 PM
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#2 |
       
Drives: 12 camaro ss, 72 chevelle, 91camaro Join Date: Dec 2013
Location: findlay,oh
Posts: 2,070
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I know this is an old thread but if anyone stumbles across this... the correct size is m12x1.5 inverted flare. these fittings are damn near impossible to find at your local parts store, so order some 6mm copper nickel brake line and reuse your factory ends
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12 camaro ss 427lsx, th400, f310 heads, crower shaft mounts, gpi specd solid roller, shearerfab 2k hp a/w, twin bullseye 88mm turbos, hughes pro ssx bolt together converter, holley dominator, 8.50 cert, backhalf, Ford 9", 33x17x16 tires, c16 fuel
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09-25-2019, 04:37 PM
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#3 |
 
Drives: Black aSS 2011 - L99 Join Date: Apr 2012
Location: Texas
Posts: 330
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how do you flare the ends?
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Staying stock and loving it............
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09-25-2019, 05:31 PM
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#4 | |
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Drives: 12 camaro ss, 72 chevelle, 91camaro Join Date: Dec 2013
Location: findlay,oh
Posts: 2,070
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Quote:
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12 camaro ss 427lsx, th400, f310 heads, crower shaft mounts, gpi specd solid roller, shearerfab 2k hp a/w, twin bullseye 88mm turbos, hughes pro ssx bolt together converter, holley dominator, 8.50 cert, backhalf, Ford 9", 33x17x16 tires, c16 fuel
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02-23-2020, 03:51 AM
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#5 | |
 Drives: Superlite Join Date: Feb 2020
Location: Sweden
Posts: 4
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Quote:
I’ve tried both with a tap (M12) in the master cylinder and a die on the fitting. The pitch is correct, 1,5mm/thread but the diameter is not correct. M12 is 12mm and the stock Camaro fitting is around 11.6mm. I can’t get the tap more than 1.5 turns into the cylinder and the same with the die on the fitting, around 1.5 turns. Any new info regarding this? |
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06-08-2020, 11:15 PM
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#6 |
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Drives: 2015 SS 1LE Join Date: Mar 2018
Location: Washington
Posts: 4
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Anybody know the size of the fitting going into the master cylinder? I installed a line lock and the supplied brake line keeps leaking. Figured I’d just swap it out for a braided line
Last edited by Hewiththe1LE; 06-08-2020 at 11:16 PM. Reason: More information |
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03-31-2025, 06:29 PM
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#7 |
 Drives: 2015 Camaro 1LE Join Date: Jul 2020
Location: Las Vegas
Posts: 19
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2014-2015 Camaro brake master fitting size and specs
For 2014 and 2015 SS, 1LE, Z28 master cylinder 1/4 brake tubes going to ABS pump for front and rear are M12 x 1.5 fittings
This is a tandem master cylinder piston bore is 1.060” there are 2 pistons in “tandem”not sure about 2010-2013. |
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03-31-2025, 07:42 PM
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#8 |
  
Drives: 2010 Turbo LS3 Join Date: Dec 2009
Location: Palm Bay, FL
Posts: 3,041
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Thanks for the info.
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2010 SS - Kind of an On3 kit, CTR 78/80, CompCam 239/251 620/632 122+4, E85, Z28 suspension and ZL1 diff with Outlaw axles. Gen6 ZL1 brakes.
2011 Vert - 416/w 230/236 .612/.602 115lsa, 1LE suspension w/32mm rear bar. Z28 diff. Gen6 ZL1 brakes. |
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