CRG Discussion Forum

Camaro Research Group Discussion => Decoding/Numbers => Topic started by: DZ302 Chevy on November 08, 2008, 10:16:56 PM

Title: Coonling System Numbers Wrong on '69Z
Post by: DZ302 Chevy on November 08, 2008, 10:16:56 PM

I pulled out the motor from my 10C Los 69Z for one "last" time, to re-install the origional 186 heads, and check the parts against Jerry MacNisch's book.  I found nearly everything matches.

EXCEPT
The Number on the Fan is wrong according to the book.  It is suppost to be 3947772, but is 3937779 with a date code of H68.  Do I need to find a 3947772 ?
(http://i377.photobucket.com/albums/oo219/Jack_Gesler/IMG_1017.jpg)

The Radiator doesn't have a tag on the radiator.  The tanks are stamped CB and IH.  There is a tag on the core that the bottom line seams to read IC 1869,  I cannot make out the top line.   Is this also wrong?
(http://i377.photobucket.com/albums/oo219/Jack_Gesler/IMG_1028.jpg)

Title: Re: Coonling System Numbers Wrong on '69Z
Post by: JohnZ on November 09, 2008, 04:06:36 PM

Read this CRG Report:

    http://www.camaros.org/coolingsystems.shtml

Title: Re: Coonling System Numbers Wrong on '69Z
Post by: jdv69z on November 09, 2008, 05:31:31 PM

Interesting.....my 10B (Oct 68) Z has 772 fan. your 10C Z has 779 fan. Must be about the time of the changover?

Jimmy V.

Title: Re: Coonling System Numbers Wrong on '69Z
Post by: 69Z28-RS on November 20, 2008, 06:02:05 AM

REading this .. I got curious (even though it's almost midnight).. I went down to the garage and disassembled my original fan/clutch, and found the CV Eaton clutch (the one shown for L78/COPO in CRG, along with an unstamped 7 blade fan... My car is a September 1969 build (09C)... with engine components from the last week of August.

Title: Re: Coonling System Numbers Wrong on '69Z
Post by: jdv69z on November 20, 2008, 01:31:29 PM

Update on my fan. Thought I had original fan, but know now I have replacement, not 772 unit. Disregard my previous comment.

Jimmy V.