LT1-LT4 Modifications 1993-97 Gen II Small Block V8

What is factory Idle rpm on lt1 ?

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Old 08-15-2010, 08:56 PM
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Default What is factory Idle rpm on lt1 ?

1k or 1.1k ?
Old 08-15-2010, 09:02 PM
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Neither.

Factory settings:
Auto - 550 in drive, 650 in park.
Manual - 850.
Old 08-15-2010, 10:09 PM
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keep in mind the tach isnt 100% accurate. My auto always showed 900-1000rpm. stock and modified. PCM showed 750-800



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