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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jul 2010 Posts: 96 Shop Shark | | Shop Shark Joined: Jul 2010 Posts: 96 | Hi Folks,
Just finished re adjusting the valves and re gapping my spark plugs.
Started my truck and -WOW-the idle Speed is up by 200 RPM!
Valves were too tight and the plug gap was too tight. Opened the plug gap to .040 (pertronix ignition) and my valves to .008 I and .018 EX - cold.
Haven't driven it yet. Weather is really bad. Should be OK next week.
Anybody able to explain the jump in idle speed?
Thanks and Happay Easter | | |
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