harley-davidson guys

Yep once you get much more than the likes of the N4 cams the bottom end starts to suck for the street. So as mentioned do not OVER cam

Lots of good info here.

As I mentioned the heads I have were CCed for the Harley conversion kits they offer. So you get the quench areas and the proper compression to liveon the street. Fom there you can do what you want, port to with in reason and add bigger valves etc.

But just a note: aftre you go to a 1200 which is the most bang for the buck, the HP is going to cost you for every 5 to 10 you add.

Good luck and I would get theHarley-Davidson Sportster Performance Handbook, 3rd Edition

https://www.motorbooks.com/Store/ProductDetails_33921.ncm