what is the perfect idle rpm for hotrods? - Page 2 - MustangForums.com


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Old 09-18-2016, 06:53 PM   #11  
amaNIN
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So, what would happen should I set the idle at 500 rpm's?
Deeper exhaust note?
save on gas?
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Old 09-19-2016, 07:45 AM   #12  
Norm Peterson
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Stall occasionally? Make life harder on the converters?

I honestly don't understand why you'd want to give up anything to make your car sound like it's got a big cam in it when you aren't going to have the big top end HP to back up what the sound at idle is supposed to promise. Some "P" word or other comes to mind here.

Then again, maybe it's no worse than running drag radials on the street . . . on an otherwise completely stock 4.0 sixxer car.


Hope OP has got what he wanted all figured out by now, given that it's been over 6 years . . .


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Last edited by Norm Peterson; 09-19-2016 at 07:49 AM.
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Old 09-19-2016, 12:33 PM   #13  
ghunt
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Quote:
Originally Posted by amaNIN View Post
So, what would happen should I set the idle at 500 rpm's?
Deeper exhaust note?
save on gas?
That's way too low. At 500 RPM I wouldn't be surprised if you ran into oil starvation issues.
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Old 09-21-2016, 12:02 PM   #14  
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I hadn't thought about lowering the idle RPM to hear how my cams sound, but it's been on 750 RPM and sounds great right there.
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