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Old 02-04-2008, 01:18 PM   #1
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Join Date: May 2000
Location: Budd Lake NJ, USA
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Car: / 89 IROC /
Engine: 305 TPI
Transmission: 700R4

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Normal TPI idle
Can anyone tell me what their cars idle at when warm? TPI automatic. I show about 750 RPM, is that too high?
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Old 02-04-2008, 03:11 PM   #2
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Re: Normal TPI idle
The tag under the hood should tell you. It think it's about 700 RPMs for your car/year/transmission. Stock tachs are notoriously inaccurate, so don't go by that.

My old 86 with a 305 TPI and auto trans had a stock idle speed of only 550 RPMs!
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Old 02-04-2008, 05:44 PM   #3
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Join Date: Jul 2001
Location: Buffalo, NY
Posts: 4,699
Car: 1988 IROC-Z
Engine: H/C/I L98
Transmission: Modified 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac

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Re: Normal TPI idle
For me:

1000 cold in park
750 warm in park
600 warm in drive.
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L98 with a little AFR, and a bit of comp cam (316 rwhp). - [Idle Clip]
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Old 02-04-2008, 05:44 PM
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