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Mod | | | Forums66 Topics128,078 Posts1,056,055 Members48,433 | | Most Online14,466
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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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#78654 06/10/2007 1:54 AM | Joined: Feb 2004 Posts: 29,792 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,792 | Regular unleaded- - - - -WRONG CHOICE! If it's actually a 300 HP engine, it has a 10.5:1 compression ratio, and 93 octane will just barely work in it. Regular or mid-grade gas will detonate, and probably cause major engine damage, especially if you do any full-throttle running.
The after-run is probably caused by too high an idle speed. If the car has an automatic transmission, try leaving it in drive as you shut the ignition off. If it's got a stick shift, leave the car in gear and let the clutch out as you shut down. Dropping the idle speed to about 700 RPM or less is the best fix for after-run.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
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