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**mr48chev** · 01-31-2009, 03:17 PM

I don't have the manual in the house but I think around 650 for a stone stock engine in neutral is pretty close.

If the truck is an automatic you don't want it to idle so fast that it trys to move the truck appreciably when you slip it into gear at an idle.

01-31-2009, 03:17 PM	#2
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,817	Re: What should the tachometer read in idle? I don't have the manual in the house but I think around 650 for a stone stock engine in neutral is pretty close. If the truck is an automatic you don't want it to idle so fast that it trys to move the truck appreciably when you slip it into gear at an idle.