<VV> Head Number/Size Question

[RoboMan91324@aol.com]

Grant,

The 1964 engines were 164 CID but still used the same diameter head gasket as 
the 145 CID engines.  Chevy increased the diameter of the cylinder to head 
mating surface to use a wider head gasket in 1965.  This was because of a 
concern for blown head gaskets with the smaller gaskets.  It sounds like you have 
the right heads.  Some people bore out the 1964 heads to use them on later 164 
CID engines and I believe that the vendors sell adapters to use later heads on 
the 1964 cylinders.  Just use 145 CID type gaskets on the engine unless you 
are changing the cylinders to 1965 or later type.

Doc
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In a message dated 06/16/04 3:24:34 PM Pacific Daylight Time, 
virtualvairs-request@corvair.org writes:

> Message: 8
> From: GYoungwolf@aol.com
> Date: Wed, 16 Jun 2004 18:10:34 EDT
> To: virtualvairs@corvair.org
> Subject: <VV> Head Number/Size Question
> 
> I have a pair of cylinder heads that have the number 3819876 on them (and 
> labeled by the PO as 1964 110). The Corsa Tech Guide shows this number to be 
> for a 164 ci 110 HP engine. However, just to be sure, I checked a head gasket 
> for a 164 ci 140 HP engine and it won't fit (too big) the 110 head, 
> indicating, I think, that the heads are actually 145 ci? What gives, or what am I 
> missing?
> Thanks,
> Grant