09-25-2022, 05:36 PM
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#2
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Just here to tinker
Join Date: Jun 2008
Location: Holland, MI
Posts: 3,672
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Re: Suburban k20 motor
All depends on how heavy your foot is and how fast you need to go. If your doing 70 with 4.10’s and a three speed you’re probably well over 3k rpm.
Ideally you want to be cruising around 1800-2200 rpm. 2500-2800 is probably fine too.
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