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Old Jan 20, 2011 | 08:08 PM
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Default 203 cams
I have a set of cams (stamped "SEH 203" on them)that I received from a friend.He has a late model road glide and an electra glide. I have no use for them, so said I could sell them.I posted a pic and a short description.I had a response back form an individual that said they were for later models but they were not "203's" because they don't make 203's for late models. I am puzzled now.(doesn't take much eh)My bud is out of the country so I can't ask for a confirmation. Do they make 203's for later models? Or am I having flashbacks!
 
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Old Jan 20, 2011 | 08:45 PM
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I woud assume that since the SE203 cams are listed in the every SE Performance catalog since the cam plate change in '07 that SE203 cams are available for late models. Easy to check, measure the inner cam bearing journal; late model measurement is .875"; early model measurement is smaller, don't recall the dimension though.

The SE204 is avaialble for the later models but not the SE203; that's probaby why you inherited them.
 
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Old Jan 21, 2011 | 02:44 PM
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Late is 1.00, early is .875, I think that's what djl meant to type.
 
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Old Jan 21, 2011 | 03:16 PM
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Originally Posted by qtrracer
Late is 1.00, early is .875, I think that's what djl meant to type.
Good catch; my bad, typing to fast.
 
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Old Jan 21, 2011 | 10:26 PM
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203's are crap. 204 much better. Again, that's why you inherited them.
 
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Old Jan 22, 2011 | 11:44 AM
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THe 203 and 204 are both good cams; the headwork and tune must be right for the cam. Both for different applications; 203 for bagger; 204 for dynas and softails. Some guys are putting up some great numbers with the 204 in 96" and 103"; success is all in the mix of the parts.
 
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Old May 4, 2013 | 07:36 PM
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someone said 203's would be better for my softail than the 204's you seem to disagree.
 
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Old May 4, 2013 | 08:34 PM
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Originally Posted by rgwl2r
someone said 203's would be better for my softail than the 204's you seem to disagree.
This is a really old post but I absolutely disagree that 203 cams would be better for a softail than 204 cams. The 203 cam set is primarily for the heavier touring models where the 204 is a better application for the lighter dynas and softails. Both cams like more than stock compression and respond to more compression very well.

There are other aftermarket cams that would be good choices as well but if you are trying to decide between the 203 and 204; go with the 204. JMHO.
 
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Old May 19, 2013 | 05:42 PM
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What's the SEH on the cam? Mine say SEH-203 were told for a 99/06 but the generic printed instructions were for 07 up. How do I tell difference?
 
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Old May 20, 2013 | 05:27 AM
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The chain sprockets are different, and the crankcase bearing OD, is larger for 06-up Dyna/07-up all models.
Scott
 
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