<VV> [SCG] Cylinder head drawings

[Kenneth E Pepke]

The way GM tracks changes is to change the part number.
The 'change' can be something as small as relocating a 
hole by a few thousands of an inch or the size of a tapped
hole.  They start following this practice once a part has been
released for production.  SPO [Service Parts Organization] 
determines if the parts can be interchanged.
Ken P 

On Sun, 16 Nov 2008 11:32:34 EST BobHelt at aol.com writes:
> 
> Corsa/CPF recently digitized and posted several cylinder head 
> drawings. Two  
> in particular are 1965 95 hp heads, #3856743 and #3883862.
>  
>  
> I have reviewed these two drawings and have not been able to 
> identify any  
> differences between them. Has anyone else been reviewing these 
> drawings? Have  
> you discovered any differences between these two heads?  Bob 
> Kirkman's Tech  
> Guide Sup. article doesn't show any differences either and he was 
> the  "expert".
>  
> There must be a reason why Chevrolet would release two sets of 
> drawings for  
> these heads that appear to be identical. There must be some subtile  
> 
> differences.
>  
> What am I missing?
>  
> Thanks in advance,
> Regards,
> Bob Helt
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