Screamin Eagle 103 Low End Torque
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Cruiser
Joined: Jun 2011
Posts: 113
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From: Houston
Screamin Eagle 103 Low End Torque
I put the 103'" stage 4 on my bike and D&D fat cat. Right around 110 hp. I love the way it runs, but I am looking for some more low end torque. Any suggestions?
What cams are you running?
Road Master
Joined: Nov 2010
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From: Bay Area, NorCal
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Outstanding HDF Member
Joined: Dec 2008
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From: Ashland Ore.
This is true but it is less expensive if you change your front pulley from the stock 32 to a 30
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Cruiser
Joined: Jun 2011
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From: Houston
It has:
Screamin' Eagle Pro Stage IV Kit - 103"
Screamin' Eagle Performance 110+ Heads
high-compression forged aluminum 10.5:1 pistons
Screamin' Eagle 260 cam
Perfect-Fit Pushrods
58mm EFI throttle body
big 3-7/8" diameter highlighted cylinders
Super Tuner
58mm Screamin' Eagle Heavy-Breather
Automatic Compression Release
Screamin Eagle Performance Clutch Kit
D&D Fat Cat 2 into 1
Screamin' Eagle Pro Stage IV Kit - 103"
Screamin' Eagle Performance 110+ Heads
high-compression forged aluminum 10.5:1 pistons
Screamin' Eagle 260 cam
Perfect-Fit Pushrods
58mm EFI throttle body
big 3-7/8" diameter highlighted cylinders
Super Tuner
58mm Screamin' Eagle Heavy-Breather
Automatic Compression Release
Screamin Eagle Performance Clutch Kit
D&D Fat Cat 2 into 1
Last edited by Blakerea; Aug 5, 2011 at 10:21 AM.
Road Master
Joined: Nov 2010
Posts: 1,115
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From: Bay Area, NorCal
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Cruiser
Joined: Apr 2011
Posts: 150
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From: Denver
With the combination of the heads and big throttle body you really hurt the intake runner velocity (bottom end). You pretty much sealed your fate. The best thing to do is listen to everyone here and drop at least two teeth off the front. I would not be afraid to go more teeth off the front as these things are geared to the moon.
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Cruiser
Joined: Jun 2011
Posts: 113
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From: Houston
How would a 30 tooth pulley affect me at high speeds? I know I probably be able to go as fast but I am not trying to run at top speed. Will this get my rpms real high at higher speeds? Will it matter? Sorry I am new to this
Last edited by Blakerea; Aug 5, 2011 at 07:26 PM.
Tourer
Joined: Nov 2009
Posts: 288
Likes: 1
From: N. Virginia
I'm in the same boat as you Blake. Thought about changing out the cam and started a thread about it.
https://www.hdforums.com/forum/engin...ge-4-cams.html
Haven't made any additional mods yet - actually getting used to it at this point, but its taken about 3K miles to really learn the engine (admittedly, I'm a slow learner)
Other than the low end, I love the way it runs!
https://www.hdforums.com/forum/engin...ge-4-cams.html
Haven't made any additional mods yet - actually getting used to it at this point, but its taken about 3K miles to really learn the engine (admittedly, I'm a slow learner)
Other than the low end, I love the way it runs!
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