CRG Discussion Forum

Camaro Research Group Discussion => General Discussion => Topic started by: gary on December 22, 2012, 02:00:37 PM

Title: 346 67-68 master cylinder cover
Post by: gary on December 22, 2012, 02:00:37 PM

 Anybody tell me what the orginal assembly line 346 master cylinder cover WORDING was in 67 and 68  on Z/28 cars? All the repos are the same for 67-69. They made a couple of different covers in 69 with different wording but I don't know what is correct for 67 and 68. Thanks and Happy Holidays

Title: Re: 346 67-68 master cylinder cover
Post by: 1968 Z28 on December 22, 2012, 06:14:46 PM

Gary.....pictures of my 1968 Z28 07c original.  Hope this helps.

   (https://lh6.googleusercontent.com/-LDHexL8RGjo/UNX1gAHwgeI/AAAAAAAAAVU/ab0I6K1bpWY/s640/IMG_0216.JPG)

   (https://lh6.googleusercontent.com/-zSRVqlIzWUs/UNX1gKCwKPI/AAAAAAAAAVY/bl8Ds8im7TA/s576/IMG_0221.JPG)

   (https://lh4.googleusercontent.com/-d9QUCnS049c/UNX1gG26zRI/AAAAAAAAAVQ/oB6vSpZje3E/s576/IMG_0222.JPG)

Title: Re: 346 67-68 master cylinder cover
Post by: gary on December 23, 2012, 01:26:04 PM

Thanks Jerry,
     Thats the one I had for my 6D 68 Z/28. Now I know its correct. When you have time is there a date on your 346 master cylinder? I found one on my 69 Z/28 309 master but not one on  the 346. Mine has D1 or D2 on the side.  Have a Merry Christmas.   Thanks again, Gary

Title: Re: 346 67-68 master cylinder cover
Post by: JohnZ on December 23, 2012, 04:11:45 PM

Quote from: gary on December 23, 2012, 01:26:04 PM

When you have time is there a date on your 346 master cylinder? I found one on my 69 Z/28 309 master but not one on  the 346. Mine has D1 or D2 on the side.

The "D1" or "D2" aren't dates - those are foundry pattern numbers from the Danville Foundry, which produced most of the master cylinder castings for Delco-Moraine.

Title: Re: 346 67-68 master cylinder cover
Post by: Mike S on December 23, 2012, 04:59:18 PM

Gary,

 FWIW, both my 67's (4B & 5B) still retain their original 346 'WT' master cylinders and neither have date codes on them.
Also, Long Island Corvettes has the correct reproduction covers with the vents and wording (P/N 52-18N).
They also sell the correct steel bale wire for a lot less than others Camaro suppliers.

Merry Christmas,
Mike

Title: Re: 346 67-68 master cylinder cover
Post by: 1968 Z28 on December 23, 2012, 11:17:02 PM

Mike is correct.  My "WT" master cylinder does not have a date also.  Just the "WT" letters on the front small machined surface

Title: Re: 346 67-68 master cylinder cover
Post by: bertfam on December 24, 2012, 12:11:50 AM

You may or may not find a julian date code stamped into the machined boss on the front outlet. Seems 68's only had them sporadically.

Ed

Title: Re: 346 67-68 master cylinder cover
Post by: gary on December 24, 2012, 02:01:43 AM

Thanks Guys. Merry Christmas and a Happy New Year.   Gary

Title: Re: 346 67-68 master cylinder cover
Post by: 69Z28-RS on December 24, 2012, 06:10:52 AM

the 1969 'US' stamped master cylinders had a date code (julian) cast into the side of the MC opposite the PN.  I'd be surprised if all the D-R MC weren't similarly cast.

Gary

Title: Re: 346 67-68 master cylinder cover
Post by: 1968 Z28 on December 25, 2012, 06:07:21 AM

Gary....you have a PM

Title: Re: 346 67-68 master cylinder cover
Post by: luv2sixty9 on September 02, 2014, 10:02:22 PM

I have two original 346 Master Cylinders with the "WT" stamping. None have a Julian Date Code.

- The first MC has the backwards casted 346 part number and it has the SAE J1703 Lid

- The second one has the normal casted part number and has the same lid pictured above.

I'm assuming the backward 346 MC with the J1703 lid is for a verly late 68 Z28