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4.0L V6 Technical Discussions Any questions about engine, transmission, exhaust, tuners/CAI, or gearing can be asked here!

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Old 07-22-2011, 01:38 PM   #1
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Default V6 RPM limit

What is the RPM limit on the 4 liter V6? Modifying the engine beyond the stock RPM. Thanks
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Old 07-22-2011, 03:30 PM   #2
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RPM LIMIT or the factory default redline?
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Old 07-22-2011, 03:54 PM   #3
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How about both?
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Old 07-22-2011, 10:59 PM   #4
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I have mine set at 6300. Don't know the limit
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Old 07-22-2011, 11:28 PM   #5
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I'm not sure anyone knows the upper limit. But on my GT, the factory rev limiter is set at 6250. Brenspeed reset it in their tune to 6800 and I moved it back down to 6500 RPM. And I bounce off it on occasion.
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Old 07-23-2011, 12:43 PM   #6
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I have mine set at 6000 to be careful. I wouldn't be surprised to see people push 7K without problems on occasion.
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Old 07-24-2011, 12:17 AM   #7
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7000 might be a tad higher. I would say you can push as far as 6500 on stock internals, but would go above that. you'll most likely start bending/breaking internals.
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Old 07-24-2011, 02:15 AM   #8
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Thanks for the info. I have a particular exhaust system in mind and it will sound good at higher RPM. Spad
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Old 07-25-2011, 10:48 PM   #9
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Mine will go and once it gets to high it will pop out of gear did it once
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Old 07-26-2011, 01:47 AM   #10
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The 4.0L valves tend to 'float' as rpms get up there. Upgrading the springs would help that and allow a little safer rev range.
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Old 07-26-2011, 01:47 AM
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