John/Neil
  If I remember correctly, the Corvair engine, at least the 140HP (4
carb) and 180 HP (turbo) had sodium cooled exhaust valves. Just
another bit of "engineering advice" GM picked up  from VW?

On 1-Nov-06, at 1:35 PM, Automatic digest processor wrote:

> Date:    Wed, 1 Nov 2006 11:08:13 -0600
> From:    John Rodgers <inua@CHARTER.NET>
> Subject: Re: AMC heads (part 2)
>
> Neal, interesting post!
>
> I never knew that the V-dub engines had sodium filled valves.
> Interesting info.