<VV> GM Part Numbers Help

[BBRT]

Joe,

The Group # is .030 and the cylinder/piston size should be stock, if as sold 
new.  The second number, 3838077, is listed in the P&A 30 as for a 61-63 car 
and FC application.  The other number, 3869276 is listed as a 66-69 for cars 
exc. H/Per (which I don't understand) exc. A.I.R . (H/Per w/ A.I.R is listed 
as 3889799). I would suspect if ALL the cylinders are notched then some are 
mis-boxed. All pistons should be flat top.  Were I you, I would check the 
wrist pin height to make sure the pistons are either early, or late height, 
since you have boxes that indicate both early and late pistons/pin/rings. 
Early piston's height are taller from wrist pin to piston top.

Good Luck

Chuck S
BBRT


----- Original Message ----- 
From: "Joe Hennerfeind" <hennerfeind_joe at yahoo.com>
To: <virtualvairs at corvair.org>
Sent: Thursday, July 26, 2007 8:16 PM
Subject: <VV> GM Part Numbers Help


>I have come into posession of 12 GM original
> cylinder/piston sets.  The boxes have GM part numbers
> 3869276 and 3838077.  All cylinders have the notch in
> the skirt (so I know they are 64-69), and boxes are
> marked "GR. 0.030 CYLINDER UNIT," so I assume the have
> been bored +30.
>
> What is the difference between the part numbers?  I
> only have tags on a few boxes as most have fallen off.
> If they are different, how do I tell the difference?
>
> What are they worth as I will probably sell them all?
>
> Thanks!
>
>
> 
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