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Old 03-06-2004, 11:50 PM   #1
SWEET7T
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Pwr vs. Non-pwr master cylinder...

They are the same right (for a '70)? I found a 70 with pwr brakes and I am doing the swap hopefully tomorrow afternoon. I want to say that both the pwr and non-pwr trucks used the same master cylinder, but I want to make sure before I get started. Thanks...
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1970 C10, 2wd, LB, 307/TH350/3.08. PS, PB
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Old 03-06-2004, 11:52 PM   #2
CPNE
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I believe that is correct
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Currently on or near the homestead:

67 Chevy SWB 2WD stepside 350/3 on tree (Pat's)
67 GMC SWB 2WD Fleet 402/auto (Brian's under construction)
67 Chevy 3/4 ton 2WD 402/auto (Business Hauler)
67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC)
68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC)
70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC)
71 Chevy SWB stepside (Crushed by tree - parts donor)
72 Chevy 3/4 ton 4WD (Parts donor)
72 Chevy 3/4 ton 4WD Suburban (Parts Donor)
72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC)
81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler)
82 Camaro Z/28 355/Super T-10 (Pat's toy)
93 Caprice 9C1 (Brian's Cop Car)
02 Toyota Camry (Reliable but a souless steel and plastic hulk)
2011 2SS RS Camaro M6 Factory Hurst Shifter

Maybe I need to sell some of this crap

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Old 03-07-2004, 01:24 AM   #3
Sweet72
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I did the same swap and used my manual brake master. What a difference, that and power steering make our trucks a lot more driver friendly!
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'72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction.
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Old 03-07-2004, 02:05 AM   #4
krue
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My non power MC worked with booster.
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Old 03-07-2004, 02:31 AM   #5
Longhorn Man
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I know for a fact that the 69 and 70 master cylinder is the same part number for power and non power assist.
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