cam recomendation
Thread Starter
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Intermediate
Joined: Apr 2021
Posts: 40
Likes: 14
From: Perth Western Australia
cam recomendation
G'day
Ive got a 2010 Fat Bob with on of the early SE stage 4 kits on it
Screamin’ Eagle® Performance 110+ Heads - 2.120" diameter intake valves (has ACR)
high-compression forged aluminum 10.5:1 pistons matched to the 110+ heads
103 kit
SE260 cam
Perfect-Fit Pushrods
58mm EFI throttle body
high flow injectors
3-7/8" diameter highlighted cylinders
Super Tuner
SD Heavy Breather A/I
V&H big radius pipes
Im told it made 109HP & 100 torque
I see the later stage 4 kits have the 259E cams & different heads
Are the 259E cams a better fit?
Ive got a Supertrapp big shot 2 into 1 pipe Im going to fit & get the bike dyno tuned
The SE260 cam has a fairly high duration number & from what Ive learned in the HiPo car game sometimes less cam is more
Any suggestions on a cam that would be a better fit?
Power & especially torque numbers seem to be a little down from what Ive read
Cheers
Ive got a 2010 Fat Bob with on of the early SE stage 4 kits on it
Screamin’ Eagle® Performance 110+ Heads - 2.120" diameter intake valves (has ACR)
high-compression forged aluminum 10.5:1 pistons matched to the 110+ heads
103 kit
SE260 cam
Perfect-Fit Pushrods
58mm EFI throttle body
high flow injectors
3-7/8" diameter highlighted cylinders
Super Tuner
SD Heavy Breather A/I
V&H big radius pipes
Im told it made 109HP & 100 torque
I see the later stage 4 kits have the 259E cams & different heads
Are the 259E cams a better fit?
Ive got a Supertrapp big shot 2 into 1 pipe Im going to fit & get the bike dyno tuned
The SE260 cam has a fairly high duration number & from what Ive learned in the HiPo car game sometimes less cam is more
Any suggestions on a cam that would be a better fit?
Power & especially torque numbers seem to be a little down from what Ive read
Cheers
Stellar HDF Member
Joined: Aug 2020
Posts: 3,159
Likes: 2,202
From: College Station, TX
Is sounds like you are trying to get the torque to come on sooner. You current cam has late closing intake and lots of duration, which is for high rpm HP, not low rpm performance. If you are riding two up, I bet it's not that much fun from a stop.
With 10.5:1 compression and the rest of your setup, I'd look at a Wood-777 or similar cam. With your setup, you should see the torque come on around 2200 or so rpm, and performance that last through 5000 rpm. There are other cams that will work well too, but this is a proven cam.
Paul
With 10.5:1 compression and the rest of your setup, I'd look at a Wood-777 or similar cam. With your setup, you should see the torque come on around 2200 or so rpm, and performance that last through 5000 rpm. There are other cams that will work well too, but this is a proven cam.
Paul
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,025
Likes: 7,549
From: Poolville
I agree on the woods cam but at 10.5:1 I would go with the 888's. And definitely get rid of those pipes.. A good 2-1 will make a difference.... For the money spent on the SE kits I've never seen what they should produce for the money.. Another issue I see it's the heads.. not sure they'll ever produce good low end torque in a103" motor...
Thread Starter
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Intermediate
Joined: Apr 2021
Posts: 40
Likes: 14
From: Perth Western Australia
Is sounds like you are trying to get the torque to come on sooner. You current cam has late closing intake and lots of duration, which is for high rpm HP, not low rpm performance. If you are riding two up, I bet it's not that much fun from a stop.
With 10.5:1 compression and the rest of your setup, I'd look at a Wood-777 or similar cam. With your setup, you should see the torque come on around 2200 or so rpm, and performance that last through 5000 rpm. There are other cams that will work well too, but this is a proven cam.
Paul
With 10.5:1 compression and the rest of your setup, I'd look at a Wood-777 or similar cam. With your setup, you should see the torque come on around 2200 or so rpm, and performance that last through 5000 rpm. There are other cams that will work well too, but this is a proven cam.
Paul
Thanks
Thread Starter
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Intermediate
Joined: Apr 2021
Posts: 40
Likes: 14
From: Perth Western Australia
I agree on the woods cam but at 10.5:1 I would go with the 888's. And definitely get rid of those pipes.. A good 2-1 will make a difference.... For the money spent on the SE kits I've never seen what they should produce for the money.. Another issue I see it's the heads.. not sure they'll ever produce good low end torque in a103" motor...
I like the mid to high end power it has now but Id be happy to give a little away up top for some more down below
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,025
Likes: 7,549
From: Poolville
It sounds like the sevens or eights are what your looking for.. Both the SE cams you list are mid to upper.. I would do it all at once and one dyno.. my personal preference would be the 8's.
Thread Starter
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Intermediate
Joined: Apr 2021
Posts: 40
Likes: 14
From: Perth Western Australia
sorry mate, what do you mean by 7’s or 8’s are what I’m looking for?
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woods 777
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Thread Starter
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Intermediate
Joined: Apr 2021
Posts: 40
Likes: 14
From: Perth Western Australia
Comprende,
I’ve been looking at Woods cams today actually
I like how some are short duration high lift
I have an old Ford with a SBF engine we race when the planets align & that’s similar
Grand HDF Member
Joined: Jul 2007
Posts: 3,724
Likes: 8,460
From: Bates County MO
From what I've seen, the 103/10.5/110+(or MVA)/260 combo never produces what most would call a "satisfying" build. Ports too big for the displacement, too little velocity, typically measures out to 10.3:1 compression, etc. My buddy tried it, using the SE STG4 kit with V&H High Output mufflers on Fullsac DX headpipes, SEHB; made 102/110 with SE260s, 103/105 with Woods 999s ( horrible dip at 2250, didn't break 100# until 3500), and was frustrated with the " lack of roll on punch". SE259s will be stronger low/mid than the 260s, and only weaker above 6K.
Cold Cranking Pressure check will tell you a lot- If that combo truly produced 10.5 compression, then the CCP (with the ACRs disconnected) should be ~185#. If the compression is where I believe it is, you'll likely read about 175ish. The 260 cams work better (not great) when the CCP is about 200#. Cometic .030" head gaskets & cylinders trimmed for zero deck height will bring you to ~10.8, which is perfect for the SE259E cams.
Cold Cranking Pressure check will tell you a lot- If that combo truly produced 10.5 compression, then the CCP (with the ACRs disconnected) should be ~185#. If the compression is where I believe it is, you'll likely read about 175ish. The 260 cams work better (not great) when the CCP is about 200#. Cometic .030" head gaskets & cylinders trimmed for zero deck height will bring you to ~10.8, which is perfect for the SE259E cams.
