Cams in a Fatboy S
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Intermediate
Joined: Sep 2016
Posts: 29
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From: Chicago
Cams in a Fatboy S
Anyone put new cams in a Fatboy S? If so, what did you go with? Any other performance upgrades? Can you share the Dyno results?
The 110 that HD put into the S is sluggish, I want more low end torque but am interested in what others have done.
Ride Safe,
Howard
The 110 that HD put into the S is sluggish, I want more low end torque but am interested in what others have done.
Ride Safe,
Howard
Thread Starter
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Intermediate
Joined: Sep 2016
Posts: 29
Likes: 0
From: Chicago
I traded in a chopper with a 113" S&S motor that would eat this thing alive. Its not a dog compared to my dyna, but they definitely are not getting what they should out of that 110.
Cruiser
Joined: Dec 2016
Posts: 225
Likes: 62
From: East Coast
I have a tts tuner and reinhart crossbacks. It will get a dyno tune in a few weeks. I am curious what the dyno results will be? I rode a couple different ones before choosing and actually felt a difference on each one. Rode a slim as well. Almost went with that, but glad I got the FB.
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,139
Likes: 7,653
From: Poolville
Check out Dave's build in this thread.... I think you'll like it....
https://www.hdforums.com/forum/engin...-lbs-pics.html
https://www.hdforums.com/forum/engin...-lbs-pics.html
Road Captain
Joined: Jan 2015
Posts: 626
Likes: 109
From: New York
The last thing I would call this bike is sluggish. With just a good 2 into 1 pipe and a good tune using a Powervision, my Fatboy S is pulling 90HP and 110 ft lbs of torque. the before and after were night and day for me. Feels like a rocket and I'm not a little guy. Howard Malloy, have you changed pipes and had the bike dynoed yet? If not, just do that first. I think you will be very impressed.
Last edited by Vision; Feb 12, 2017 at 07:58 PM.
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Joined: Dec 2007
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The existing 255 emissions, school-bus cam, is actually hard to beat, in the lower ranges, BUT, if the heads were pulled/reworked, a throttle body that actually mates to the 1.750" port ID, and an S&S .570 cam set installed, with a decent pipe, and then tuned, not only would the torque equal the 255 in the low, but would far surpass in the middle, with a HUGE top-end hp charge.
125/125 +/-, is a very common number we see here with the above combo.
Scott
125/125 +/-, is a very common number we see here with the above combo.
Scott
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Road Captain
Joined: Dec 2016
Posts: 589
Likes: 49
From: Whitehall, MI
Yeah I'm not looking to go through motor. I was just curios if there was a bolt in cam better than the 255. Sounds like I just want to go with a 2 into 1 and a tune and that should satisfy my needs!
Road Captain
Joined: Jan 2015
Posts: 626
Likes: 109
From: New York
Hilllside are those guys for top performance without question! None of the changes I mentioned are throw aways besides the tune, but the tuner can be reprogrammed. Start there and then if you're still not happy, you have the perfect recipe above. Good luck!
Last edited by Vision; Feb 22, 2017 at 11:22 AM.
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