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Author Topic: 3858403 BELLHOUSING  (Read 3359 times)
pjbizjak
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« on: May 18, 2010, 11:26:55 AM »

I'VE BEEN LOOKING FOR A 3858403 BELLHOUSING FOR SOME TIME AND I'VE NOTICED A DIFFERENCE IN THE CASTING STAMPING, SOME HAVE THE 'GM' LOGO AND THEN THE NUMBER, SOME DON'T HAVE THE 'GM' LOGO AND THE STAMPING LOOKS DIFFERENT. CAN ANYONE TELL ME WHAT TO LOOK   FOR AS FAR AS PERIOD DATING STAMPINGS? IT'S FOR A 68 Z/28. TY, PETE.
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1968 Z28
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« Reply #1 on: May 18, 2010, 02:51:40 PM »

My original 1968Z housing has a large "7" above the housing number and the only "GM" is in the center of the housing above the machined flange. The two small circles below the housing number are supposed to be other casting codes.  Don't know for sure, but it seems to me that the housings with the "GM" stamped with the housing number only appear on earlier years.....I could be wrong on this.  See signature for my car build date.
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Jerry G.

Z28-1968-07C-Norwood
Ermine White, Red Std. Interior
2 Owner, 38,000 miles
1968RSZ28
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« Reply #2 on: May 18, 2010, 06:33:04 PM »

Pete -

The original bellhousing in my 02C LOS '68 Z/28 is the exactly the same as the one in Jerry's 07C NOR '68 Z/28.  I found the cast "GM" logo where Jerry described after crawling under the car with a mirror.  I've attached below a photo I found on the web of what Jerry's and my Zs casting numbers look like...

Paul       
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pjbizjak
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« Reply #3 on: May 19, 2010, 10:22:24 AM »

Thanks guys; I understand that the markings on the bellhousing should match the markings on the M20 trans, is that correct, month and week? What does the large '7' represent in the picture? Pete
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ggtsvnv
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« Reply #4 on: May 19, 2010, 10:56:48 PM »

 My O4A 68 Z/28 bell housing looks just like the one in the pictures above. I don't know about matching the markings on the trans. I will try to check tomorrow or Friday and look to see what I can find.
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pjbizjak
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« Reply #5 on: May 20, 2010, 08:37:57 AM »

ggtsvnv..........TY, and my Z is a 04A vin 413105, what's yours?
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JohnZ
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« Reply #6 on: May 20, 2010, 08:41:43 AM »

Thanks guys; I understand that the markings on the bellhousing should match the markings on the M20 trans, is that correct, month and week? What does the large '7' represent in the picture? Pete

The bellhousing and transmission will not have any matching dates or markings - the bellhousing was installed on the engine at the engine plant, and the transmission was assembled to the engine at the car assembly plant.
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'69 Z/28
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ggtsvnv
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« Reply #7 on: May 20, 2010, 11:42:55 PM »

Mine is a NOR build car with a O4A date VIN ends with 407310
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pjbizjak
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« Reply #8 on: May 21, 2010, 06:12:28 PM »

Mine also is a NOR build, and the difference in the vins is 5795, Divide that by 900(average units per day) makes our Z's 6 days apart. And we're even closer being Z's. So we could be cousins??? What color is yours? Mine is Rally Green w/white stripes and black interior!
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rare396bronze
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« Reply #9 on: May 22, 2010, 12:05:16 AM »

Hey would like to know if rally geen 68 z came from nashville tn use to own one years ago. If it is have picture's when i first bought it sold to somebody in georgia. Also new of 67 rss/z blue came new from jim reed chevy that was drag car stilll had protecto plate with it. Had chance to buy it butt didn't hope it is restored.
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pjbizjak
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« Reply #10 on: May 22, 2010, 06:00:26 PM »

Nope, I don't think so, bought it in N.E. Ohio back in 1970
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ggtsvnv
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« Reply #11 on: May 22, 2010, 08:35:20 PM »

 Hey cuz! mine is LeMans blue/ white stripe with blue  standard interior, and needs a total resto.
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pjbizjak
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« Reply #12 on: May 23, 2010, 07:36:44 PM »

CUZ; i'm looking for 302 motor parts, block, heads, intake, would like late March 68 dating. If you know of any of these let me know. I'm in the process of resto now.
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ggtsvnv
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« Reply #13 on: May 23, 2010, 08:31:17 PM »

  I'll let you know if I run across anything. I would love to see picts. of the resto of yours. I'm getting parts together to start mine soon.
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