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Old 02-21-2008, 08:54 AM
Scoles Scoles is offline
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Default WS6 master cylinder part #

Do any of the good members here have the correct part number for a 1981 WS6 master cylinder?
I'm doing a disc brake conversion on my '71 and have a master cylinder with booster off an '81 WS6 that has not been used for a long time. I'm assuming the master will be either seized or at least pitted and unusable so I'll need to find another.
Will a 1979 or 1980 master fit on my '81 booster?
Are these master cylinders being repoped?
Any help or advise is appreciated, Thanks in advance,
Brian.

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Old 02-21-2008, 06:03 PM
Skip Fix's Avatar
Skip Fix Skip Fix is offline
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O Reiley has rebuilt ones and probably new ones. The 81 aluminum one has a larger register than a 79-80 but they would technically bolt on your booster, just not the other way around.

Often the rebuilt ones do not have the same casting # as the priginals but I don't know if Pontiac used multipel casting #s in 81.

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