103cc CAM Spec

[tbear]

I haven't seen or been able to find on this Forum,
What is the Original Cam Spec for a 103 HD motor?
Everyone including myself has changed Cams,exhaust,AC's etc...but I never heard or thought about what was the original cam spec on their motors. especially the 103cc for Harley.. I wonder because I would like to know how big a difference in cam spec's did I do with my new cam compared to the old one? I have specs on the new but not the old.Can I get some help here? thank you :xzqxz:

 

[msocko3]

int .484 lift open -12 btdc close 30 abdc 198 duration 111 lobe center
exh .484 lift open 38 btdc close 4.0 abdc 222 duration 107 lobe center

they have a -8 overlap and 109 lobe separation angle.

Just you nice run of the mill smog cam.

 

[geezerglide11441]

Thanks mSocko3, been wondering that myself!! Not far from the SE 255's looks like!

Roger

 

[tbear]

Appreciate the info MSOCKO. now I can compare that to my 557 cam.ThumbUp you da man!

 

[msocko3]

Thanks mSocko3, been wondering that myself!! Not far from the SE 255's looks like!

Roger

They are some what close, the little differences such as the SE255 closing the intake sooner, more lift and duration will make a big difference.

 

[rgc]

http://www.harley-davidson.com/store/se-performance-cam---se-255-cam-kit

I do not know if this is what you are looking for or not. It is a chart of the different cam information from HD. I saw this information and it pushed me over the edge to have mine changed. I am waiting for the parts to get in (the 255s) and I hope to have them in shortly.

Glenn