Re: Setting Fast Idle speed screw on Holley 650dp
Generally, 1400 rpm is the spot.
Trial & error is the key.
But, the easiset way to adjust is notice present rpm with fast idle cam in place, shut engine off, WOT and screw is right there to adjust, make adjustment, set fast idle cam again, start engine, and check rpm. Sometimes, you may get away with 1200 rpm.
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