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Old 03-31-2010, 08:40 AM   #1
Rivet Master
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1984 34.5' Airstream 345
Foothill Ranch , California
Join Date: Mar 2010
Posts: 3,376
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Watch out for cam gear wear!

New to Airstreams, but not new to Chevy 454's!
Thought it would be fun to share...
Here is what happened to my 1987 Suburbans motor suddenly...
Cam gear stripped...

Chevy decided that a Nylon covered aluminum gear would be a good thing. My motor was running strong as far as I knew at 155k miles. Oil was changed regularly.
Intake valves touched pistons.. bending most intake valve in the head...


The carnage!

Pulled the motor out, and checked everything... the pistons and bores were fine, so after a rehone and new rings, they went back in. The crank has thrust bearing wear so was replaced.
15k on it now, and all good so far!
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