master cylinder - Page 2 - Chevelle Tech
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post #16 of 25 (permalink) Old Oct 9th, 19, 6:55 PM
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Re: master cylinder

Quote:
Originally Posted by roadster601 View Post
my question is being a early chevelle would it use a round master
My 70 was a 3rd week of November Kansas city car and it has the rectangular with bleeders, just like the link.
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post #17 of 25 (permalink) Old Oct 9th, 19, 7:19 PM Thread Starter
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Re: master cylinder

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Baltimore thanks dave
your thoughts

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post #18 of 25 (permalink) Old Oct 10th, 19, 10:34 PM
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Re: master cylinder

My Atlanta car with a build sheet date of 10/23 and trim tag dated 10D has the square corner one with bleeders stamped BB. Build sheet has CN or GN listed in box 68 mstr cyl. I pulled a couple from BOP cars 1970-1972 which looked the same externally but were stamped with something other than BB. The depth of the hole in the plunger was either deeper or shallower (can't remember) than my original. Sent my original to Whitepost and had it sleeved.
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post #19 of 25 (permalink) Old Oct 11th, 19, 11:01 AM Thread Starter
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Re: master cylinder

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Originally Posted by 25C 70 View Post
My Atlanta car with a build sheet date of 10/23 and trim tag dated 10D has the square corner one with bleeders stamped BB. Build sheet has CN or GN listed in box 68 mstr cyl. I pulled a couple from BOP cars 1970-1972 which looked the same externally but were stamped with something other than BB. The depth of the hole in the plunger was either deeper or shallower (can't remember) than my original. Sent my original to Whitepost and had it sleeved.
want to sell it

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post #20 of 25 (permalink) Old Oct 12th, 19, 8:35 AM
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Re: master cylinder

roadster601, I have three 5470409 cores if you are interested. All have machined spot on front, two stamped BE, one no stamp. PM me if interested.
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post #21 of 25 (permalink) Old Oct 12th, 19, 8:54 AM
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Re: master cylinder

The small plunger or rod can be different lengths & diameter I have a home made plunger that I made from 1/2" round stock and a drill bit and vise for the concave end, just in case you can't find the correct part


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post #22 of 25 (permalink) Old Oct 12th, 19, 9:53 AM
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Re: master cylinder

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Originally Posted by roadster601 View Post
hello again does anyone know whats correct for my 1970 SS Feb car round or rectangular master cylinder
I wouldn't consider Feb 1970 early. Sept., Oct. 1969 yes. I would without a doubt say it would have been built with the rectangular MC.
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post #23 of 25 (permalink) Old Oct 12th, 19, 11:13 AM
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Quote:
Originally Posted by kobi67 View Post
roadster601, I have three 5470409 cores if you are interested. All have machined spot on front, two stamped BE, one no stamp. PM me if interested.

Id be interested in one of the BE cores if u could check the dates on them for me

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Last edited by davewho1; Oct 12th, 19 at 1:13 PM. Reason: fixed quote
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post #24 of 25 (permalink) Old Oct 14th, 19, 1:35 PM
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Re: master cylinder

Is this what your looking for? This is a reproduction. If your looking for an OE one with the correct date code...Good Luck. Have the one you currently have rebuilt.

https://www.ebay.com/itm/1967-77-Camaro-Firebird-Chevelle-Cast-Iron-Master-Cylinder-w-Bleeders-GM-Chevy/321074263389?hash=item4ac184755d:gC8AAOSwMgdX0Ip A

Or this OE one.

https://www.ebay.com/itm/69-70-CHEVE...temCondition=4

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post #25 of 25 (permalink) Old Oct 14th, 19, 7:24 PM
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Re: master cylinder

My 70 was a late 1969 build. Going off memory it was 2nd week of November. It had the round style master on it.
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