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01-31-2009, 03:11 PM
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#1 |
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Registered User
Join Date: Jul 2008
Location: Lawrenceville
Posts: 32
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What should the tachometer read in idle?
Was wondering if any one knows what the tachometer should read when the truck is in idle. The engine is a V8 350 4 barrel 1968 c10....Any suggestions?
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01-31-2009, 03:17 PM
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#2 |
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Registered User
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,425
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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. |
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01-31-2009, 04:27 PM
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#3 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: What should the tachometer read in idle?
My 71 with it in park [auto] is around 700. When pulled into gear it's 500 or so.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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01-31-2009, 08:59 PM
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#4 |
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Eat My Rust
Join Date: Jan 2007
Location: Cypress, Texas
Posts: 3,362
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Re: What should the tachometer read in idle?
My truck idles around 500-600 while we tuned it. Don't have a tach in the truck though.
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