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#1
11-29-2018, 10:06 PM
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1969 SS Chevelle 309 Master Cylinder Code
What is the two letter code on the pad of a 1969 Disc Brake Master Cylinder in a Chevelle? Does the code run all year long or does it split? Thanks, Scott.
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1971 Boss 351 , 17,000 miles .. 1971 Buick GS455 .. 2003 SVT Cobra .. 1971 GTO .. 1969 Camaro Fathom Green .. 1969 Camaro Hugger Orange .. 1970 Buick GS455 .. 1970 BUICK GS350 .. 1998 SVT Cobra 1900 miles;. 1973 STAGE 1 GS . 1971 Mach 1 351C 4 speed , first car. 1970 Mach 1 428 SCJ . 1970 SS 350 Camaro . 1971 442 ... 1968 Buick GS400 . 2015 Lexus IS 350 F Sport 2021 Badlands Bronco Sport 
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#2
11-29-2018, 11:02 PM
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BA is the 309 code for chevelle with power disc brakes. Interesting to note, I have a late '69 numbers L78 here with a square master much like a '70. I think it's stamped BA but can't remember right off hand...it's in storage. I've been meaning to scrub it down and get a better look.
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ScottG (11-29-2018) | ||
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#3
11-30-2018, 12:00 AM
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I also had a june 69 Chevelle with the square master
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69 RS SS L78 conv 69 RS SS ZL1 69 L78 Chevelle conv 69 L78 Nova 69 L34 Nova 67 SS Chevelle 73 Trans Am
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#4
11-30-2018, 01:11 AM
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I've been meaning to start a conversation on TC regarding this. My L78 hasn't been on the road in over 40 years and is very original. Next time I get over there, I'll dig a little deeper.
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ScottG (11-30-2018) | ||
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#5
11-30-2018, 01:46 AM
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2 of my 69’s have the BA coded 309 master cylinder! Ones a may built and ones June both came from the Fremont plant
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1969 SS 396 300 deluxe post car 1969 SS 396 300 deluxe hardtop 1969 SS 396 chevelle 1978 chevy shortbed step side 1983 chevy shortbed 1985 chevy shortbed If a hammer and duct tape wont fix it u have electrical problems!
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| The Following User Says Thank You to chevyman0429 For This Useful Post: | ||
ScottG (11-30-2018) | ||
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#6
11-30-2018, 02:28 AM
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Based on some research I have done since I asked this and the answers received BA looks like the accepted Master. Thanks for the help guys.
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1971 Boss 351 , 17,000 miles .. 1971 Buick GS455 .. 2003 SVT Cobra .. 1971 GTO .. 1969 Camaro Fathom Green .. 1969 Camaro Hugger Orange .. 1970 Buick GS455 .. 1970 BUICK GS350 .. 1998 SVT Cobra 1900 miles;. 1973 STAGE 1 GS . 1971 Mach 1 351C 4 speed , first car. 1970 Mach 1 428 SCJ . 1970 SS 350 Camaro . 1971 442 ... 1968 Buick GS400 . 2015 Lexus IS 350 F Sport 2021 Badlands Bronco Sport
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