Guest greimann Posted July 27, 2003 Share Posted July 27, 2003 My neighbor with a '96 Z28 broke a timing chain. After replacing the chain and gears there is a noticable valvetrain tick-knock-clunk. Is the LT1 motor an "interference" motor where the valves at full open can strike the piston at TDC if the chain breaks? Quote Link to comment Share on other sites More sharing options...
Mudge Posted July 28, 2003 Share Posted July 28, 2003 Yes, its happened to people local to me. You can do a leakdown to see whats going on, but likely there is at least one bent valve. If the pistons are ok, then at least he can grab some used heads for $200-$300, I got a set for $230 shipped a few months ago in great shape, other than being dirty. Quote Link to comment Share on other sites More sharing options...
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