Fuel Moto said TW555
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Road Master
Joined: Nov 2019
Posts: 934
Likes: 677
From: Ohio
Fuel Moto said TW555
I talked to a guy named Tony
He said for my 2016 Ultra, 103, That I should go with 555's for rushmore bikes
Told him I'm in it for low RPM torque and top end not so much
I thought these needed a bump in CR and shined more in the mid/upper RPM's
Any thoughts?
He said for my 2016 Ultra, 103, That I should go with 555's for rushmore bikes
Told him I'm in it for low RPM torque and top end not so much
I thought these needed a bump in CR and shined more in the mid/upper RPM's
Any thoughts?
Elite HDF Member
Joined: Jul 2007
Posts: 3,903
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From: 48.067222,12.863611
If you're going bolt in and sticking with Woods, I'd do 222 if you want low end torque. Personally, unless you get one of these bolt in cams tuned by a competent tuner, I'd just leave the rushmore cam in the bike. Or use a Andrews 48, save some coin, and avoid the woods tax.
Elite HDF Member
Joined: Jul 2010
Posts: 3,830
Likes: 302
From: Lorain Ohio
I installed the CR 570 an put the .030 head gasket in an I'm happy with the way my bike pulls. I had the 555 in my slim an it was good but I might not have gotten the most out of it since it was tuned with a canned tune from the FP3. My CR 570 has a canned tune via a power vision an a Fuel Moto supplied tune. This spring I plan on taking the bike to Roeder's an getting a dyno tune, I don't have any numbers right now.
The TW-555's do indeed build broad power and are a very popular grind for the 103's. All depends on your main objectives, the other components you are running on the bike, as well as any future plans you would like like the cam to fit into as well.
For those interested we are about 3/4 of the way thru our "Twin Cam 103 super cam comparo" and we are getting ready to post results in the next couple weeks here> https://www.hdforums.com/forum/touri...m-testing.html
We bought a 103" bike and have tested 15 bolt in cams from various brands, we have a handful of cams left and we will be publishing all of the data. Stay tuned
For those interested we are about 3/4 of the way thru our "Twin Cam 103 super cam comparo" and we are getting ready to post results in the next couple weeks here> https://www.hdforums.com/forum/touri...m-testing.html
We bought a 103" bike and have tested 15 bolt in cams from various brands, we have a handful of cams left and we will be publishing all of the data. Stay tuned
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Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
6th Gear
Joined: Feb 2019
Posts: 12
Likes: 9
From: Florida
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Grand HDF Member
Joined: Sep 2017
Posts: 4,359
Likes: 1,219
From: Dubuque, IA
I think people's definition of good low end torque is a bit skewed by the masses to the point they lose out on well rounded performance. There's certainly nothing wrong with the low end of cams like the 555s or 570s in a stock 103 and have something that carries out a little better. The difference in low end torque and 3° IVC when looking at the tw5-6 is also minute when considering duration and 8° more overlap of the 570s or 555s that lends to better cylinder fill at low rpms. I did 90+ torque at 2200rpm with the 570s in a stock 103. Sure wouldn't want any earlier ivc than the 37° of the 5-6.
Last edited by 60Gunner; Jan 1, 2022 at 04:10 PM.
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6th Gear
Joined: Feb 2019
Posts: 12
Likes: 9
From: Florida
I think people's definition of good low end torque is a bit skewed by the masses to the point they lose out on well rounded performance. There's certainly nothing wrong with the low end of cams like the 555s or 570s in a stock 103 and have something that carries out a little better. The difference in low end torque and 3° IVC when looking at the tw5-6 is also minute when considering duration and 8° more overlap of the 570s or 555s that lends to better cylinder fill at low rpms. I did 90+ torque at 2200rpm with the 570s in a stock 103. Sure wouldn't want any earlier ivc than the 37° of the 5-6.
Grand HDF Member
Joined: Sep 2017
Posts: 4,359
Likes: 1,219
From: Dubuque, IA
In the case of the 5-6s Scott mentioned, they're power band is 100-200rpm lower leaning closer to a low mid.
Last edited by 60Gunner; Jan 1, 2022 at 08:46 PM.