Need some advice, I have a 2006 883 Custom with Stage 1 and a SE Race ignition. My questions is, hoe much gain will I get by putting the SE performance cams in. I will eventially upgrade to 1200, but I am only able to do this now????

 

With the pre 2004 models the heads don't flow enough to justify cams on an 883 without head work.
I'm not sure with the 2004 & later models. I've heard the moco used buell heads (different valve angles). However the intake ports & valves may still be small.
Check with:
http://www.nrhsperformance.com/
or
http://www.zippersperformance.com/
The worst answer they will give is the same as mine .... why bother?

 

Cams will add to performance on 2004 and later bikes because of the high flow heads. If you have the stage one done already. Here is a link that explains it pretty well I think.

http://www.harley-performance.com/200502.html

 

h-d only used the buell heads on the 1200cc not the 883.

 

If the cams were replaced on a 07 1200, that has had a stage 1 re-map another re-map would be in order right.

Tom

 

Which screaming eagle cams? .551's? .497's? .536's? Not all of those will work without other modifications.

Second, what exactly are you looking to gain? With a different cam profile you will gain more top end and loose bottom end (typical result: exceptions apply). At least with the screaming eagle cams. With other cams such as N2's the opposite may actually happen.

 

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Cams such as these would require major engine modification.

Low and mid range duration cams of 235 to 250 would be a drop in application depending on year of bike and whether it was a 04 1200 or 883 or later model with a stage one already done. The high flow heads if I am not mistaken are only on the 1200s. Low an mid range duration cams will give more low end to mid range tork. It would be kinda pointless to put a high duration cam into a bike such as these. You would actually lose power at the lower end of the rpm range and only gain it at the higher levels. Unless your racing down the highway at 120mph or racing it there is no point. A good low to mid range duration cam could add a lot of fun to the bike. Tork is where its at and you want it were you can use it. These cams are usually refered to when doing a stage two upgrade. So I have been told

I don't ave it all figured out yet, but this is what I have gathered so far from some of the more reliable info I have found.

 

So, does anyone have any recomendations for mid range cams for a 04-06 1200?

 

The stock rubbermount W-cams have a very wide powerband. With a small modificiation I have managed to make them work from 2000-6300 rpm (my new redline). They are good midrange cams. Another set of good midrange cams are N4's/.497's, but they tend to work better with a 2-1 exhaust.

 

Does that mean you modified the rev limitier so that it would kick in at a high rpm or maybe not at all ?