Is it true?
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Ultimate HDF Member
Joined: Jun 2009
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From: 46th State, USA
Is it true?
While talking to a TTS installation tech, he said the stock cams in my '09 Ultra Classic 96 cube engine power band is over 4,000 RPM's. Is that true? Other than H-D trying to sell cam kits, is there a logical reason for that? I don't think my engine has ever been to 4,000 RPM's.
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Joined: Aug 2008
Posts: 5,189
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From: N.E. Wisconsin
I believe so, you should e able to run it up to 6200rpm, they do that when they install air cleaner and pipes. otherwise the rev limiter is set at 4000. Different cams will give you more duration and or lift for more fuel.
Last edited by drukanfu; Jul 17, 2010 at 09:21 PM.
Seasoned HDF Member
Joined: Jan 2006
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From: Charleston, SC
Also the rev Limiter isn't set to 4K. I forget what exactly but its more like 5 something. EDIT: posted above 5800.
lp
Road Warrior
Joined: Apr 2009
Posts: 1,258
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From: Jackson, Ohio
I think he meant to say the power is over at 4000 rpm's 
Like mentioned already, the rev limiter is set to 5800 stock. I'd bet the torque curve is taking a heavy dip after 4000 rpm's. May as well shift becausing revving it past that is useless noise.
Like mentioned already, the rev limiter is set to 5800 stock. I'd bet the torque curve is taking a heavy dip after 4000 rpm's. May as well shift becausing revving it past that is useless noise.
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