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[oletrucks] Re: Jim HOuse backfires

To: oletrucks@autox.team.net
Subject: [oletrucks] Re: Jim HOuse backfires
From: Advdesign1@aol.com
Date: Fri, 23 Mar 2001 06:40:30 EST
It sounds like you have an intake valve adjusted too tight.  Retorquing the 
head is a good idea but that will make the valves even tighter.  Get some 
feeler gauges and make sure the intakes are .007 and exhausts have at least 
.014" of clearance between valve stem and rocker arm.  It's all in the shop 
manual.  The tip off was backfiring during waqrm up, when valves tighten.  
the push rods warm up slowest, so it takes them 15-20 min to reach their warm 
length.  You should also change points.  That can work miracles!
Bob ADler
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959

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