103 Cam Selection

[JOKERS IMPALA]

A buddy of mine is looking for cam suggestion for a stock 2012 Street Glide, not sure if hes gonna do the heads yet or not.

[grof]

Originally Posted by JOKERS IMPALA

A buddy of mine is looking for cam suggestion for a stock 2012 Street Glide, not sure if hes gonna do the heads yet or not.

I have SE 259 cams with SE air intake and D&D exhaust dino numbers are 110HP /118 TQ , very very happy. (no head work or TB)

[strokerjlk]

Originally Posted by grof

I have SE 259 cams with SE air intake and D&D exhaust dino numbers are 110HP /118 TQ , very very happy. (no head work or TB)

and it has high compression pistons. he is talking about a factory stock 103.


in a factory 103
andrews 57
cycle rama 575
SE204

[petew]

I had 255's installed in my 2011 RGC about 2000 miles from new.
I also did the exhaust, intake and tuner at 1000 miles from new, with 1K service.
It was better after the first round of changes, but when I did the cams a thousand miles later, the bike became much nicer to ride in every way! It jumped from stock to 92hp/110tq. No down shifting required.
That lasted for another 6K miles before I decided to get more power, so just a month before Sturgis this year, I weighed the cost/benefits of the 120R vs. Stage IV 103 Race Kit. I ended up going with the Stage IV Race Kit, couple of thousand cheaper, get it done in a day, and the 120R is still out there for my next power increase!
The Stage IV Race Kit dynoed out at 117hp/111tq and althoughI only netted a single pound foot of tq, however it gained a cool 25hp!

[BVBOB]

Originally Posted by JOKERS IMPALA

A buddy of mine is looking for cam suggestion for a stock 2012 Street Glide, not sure if hes gonna do the heads yet or not.

If I were to do nothing more than cams my choice would be the Tman 555 torquester hands down. A decent exhaust is a must no matter what cam he chooses, V&H power dual with a good slip on like the 4 inch Rineharts or Krusher mufflers always produce a nice torque curve. I dyno'd two last summer with this combo that did in the 110/120 range with the moco head exchange porting program.

[strokerjlk]

Originally Posted by BVBOB

If I were to do nothing more than cams my choice would be the Tman 555 torquester hands down. A decent exhaust is a must no matter what cam he chooses, V&H power dual with a good slip on like the 4 inch Rineharts or Krusher mufflers always produce a nice torque curve. I dyno'd two last summer with this combo that did in the 110/120 range with the moco head exchange porting program.

Bob does the 555 net 100 hp on a factory 103 bolt in like the 57?
I seen them in the 95-96 hp area on a few sheets.


what makes the 555 worth 100.00 more than a andrews 57?
I think your right it is a good fit.
But
just wondering since you said hands down? you must have a good reason. what am I missing? I have never done one.

[S&S Cycle]

103 Engine, S&S CNC Heads,S&S 58mm TB, Crane 290-2, PT Header w/PT Muff Stealth AC STD Filter
71.35 °F 29.37 in-Hg Humidity: 20 % SAE: 0.99 Average Gear Ratio: 48.21

Stock Baseline
MAX: 70.15hp 86.15 ft/lbs

After Modifications
MAX: 108.8hp 104.5ft/lbs

Tested on a Dynojet 250i

[dzlfitr]

Originally Posted by BVBOB

If I were to do nothing more than cams my choice would be the Tman 555 torquester hands down. A decent exhaust is a must no matter what cam he chooses, V&H power dual with a good slip on like the 4 inch Rineharts or Krusher mufflers always produce a nice torque curve. I dyno'd two last summer with this combo that did in the 110/120 range with the moco head exchange porting program.

That cam in a stock 103 will put a smile on his face.


I wouldn't put too much stock in dyno numbers,
unless he runs balls out all the time.

[S&S Cycle]

Originally Posted by dzlfitr

That cam in a stock 103 will put a smile on his face.


I wouldn't put too much stock in dyno numbers,
unless he runs balls out all the time.

You are correct to say that purchasing a cam based solely on the Peak Dyno number is irresponsible. As a consumer you should be looking at several major factors

1. Riding Style
2. Weight of rider and motorcycle
3. Typical Riding conditions

If you ride 2 up on a full dresser and cross country tour, your best not to have a cam that makes huge HP at 6500rpm, you would be best served by making a flat line torque curve over a broad RPM range. If you are a throttle jockey burning tires from Street light to street light than maybe you want to wind it up and pull through the stratosphere. We at S&S try to provide the best cam profile as possible for given riding conditions. 8 world records at bonneville this year alone should speak for itself. Good luck in your search, we are here to help!

Dynometers are a very valuable tool for measuring the performance gain or loss from component changes. In our R&D facility we have many and couldn't do development work with out them. it would be like trying to build a house with out a tape measure!

Thanks for your support and Hope you choose S&S for your next build!

[strokerjlk]

Originally Posted by S&S Cycle

103 Engine, S&S CNC Heads,S&S 58mm TB, Crane 290-2, PT Header w/PT Muff Stealth AC STD Filter
71.35 °F 29.37 in-Hg Humidity: 20 % SAE: 0.99 Average Gear Ratio: 48.21

Stock Baseline
MAX: 70.15hp 86.15 ft/lbs

After Modifications
MAX: 108.8hp 104.5ft/lbs

Tested on a Dynojet 250i

That's all fine. But he can make 8 less hp and 5 more tq. Just bolting a cam In Without head work.

[msocko3]

Originally Posted by strokerjlk

That's all fine. But he can make 8 less hp and 5 more tq. Just bolting a cam In Without head work.

I know my a$$ won't feel the difference between 8 more hp and 5 tq, but my wallet sure will miss the $$$ from buying the heads.

[S&S Cycle]

You may like the 551's as well
http://www.v-twinforum.com/gallery/s...to=11084&cat=2

[Dyna Ryda]

I just put a set of 551's in my friends 103 road king last weekend. They work really well with stock heads. Instant torque and throttle response.

[strokerjlk]

Originally Posted by S&S Cycle

You may like the 551's as well
http://www.v-twinforum.com/gallery/s...to=11084&cat=2

most guys wont like the 551 in a factory 103.
you can get the same guys that like the se 255's to like them,but then again you can pick up a 255 cheap, all day long ,from the guys that tried them and dont like them anymore .
dont get me wrong I like S&S stuff. but you guys really should develop some kind of cam for the factory 103's. a bolt in that isnt all low end tq,or needs compression to work decent.

[Dyna Ryda]

Originally Posted by strokerjlk

most guys wont like the 551 in a factory 103.
you can get the same guys that like the se 255's to like them,but then again you can pick up a 255 cheap, all day long ,from the guys that tried them and dont like them anymore .
dont get me wrong I like S&S stuff. but you guys really should develop some kind of cam for the factory 103's. a bolt in that isnt all low end tq,or needs compression to work decent.

something in between a 551 and a 585 would work well. The 551 isn't bad as long as u shift gears about 5000 rpm. With the 6 speed tranny it's pretty easy to stay in the power. I was pretty inpressed with just a bolt in cam, exhaust, a/c, and tuner. My 5 speed dyna I shift at 6000 with the 570 cams. Wonder how the 570 would do in a stock 103?