I've heard that new V8 valves (hardened, these days) will fit in the 235
heads. I know that you DON'T want to run hardened valves & hardened seats
at the same time, but why not change the valves (seemingly cheaper,
especially since you would be replacing valves anyway) instead of fitting
new hardened seats?
Regards,
Doug Pewterbaugh
dpewter@msn.com
Denton, TX
49 3104 216 5-Window
-----Original Message-----
From: Ted Timmons <tedt@colubs.com>
To: oletrucks@autox.team.net <oletrucks@autox.team.net>
Date: Friday, June 04, 1999 12:55 PM
Subject: RE: [oletrucks] lead additives
>Jack said:
>> My 228 GMC six did not have hardened seats, and I never
>> ran it with any additives. I probably put 15 thousand
>> miles on it, the majority at highway speed, using only
>> unleaded - and on teardown after it blew a head gasket,
>> I noticed no appreciable valve seat recession. Total
>> mileage on the engine was about 60K at that point. Of
>> course, I had hardened seats installed as part of the
>> ensuing valve job. I have seen a couple of 235 heads,
>> and several vintage Brit motorcycle engines, in similar
>> condition.
>
>I had similar results to Jack when I blew my head gasket. The pics of my
>head & gasket are somewhere in the tech section of chevytrucks.org, I
think.
>
>I took the head into my favorite engine shop and they wanted somewhere
>between $300 and $600 to rebuild the head with the hardened valves. So I
>decided against it. The wear was nominal.
>
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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