I just finished installing the 3 7/8 jugs and pistons on my 07 road king. I left the heads alone. I used the 255 cams. I have a screamin eagle air box and air filter, and Vance and Hines slip-ons. I put a Power Commander on it and had it Dyno tuned. It made 84.1 hp, and 101 ft. lb of torque. It seems like I should have made more hp, but the torque number sounds good. Does anybody have any suggestions?

 

575 Cams from Zippers...It'll be so fast you won't be able to hang on !!!

 

Think of your motor as an air compressor, the more air you can force through it the more power, you have to open up the heads to getmore power out of it.

 

se255's are a smog cam. make them disappear. the 575's are good as stated above but i would go with the woods tw6h first. did you bump up the compression to 10.5 or leave it?

 

Get one of these ProChargers:

http://www.procharger.com/motorcycle.shtml

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