Originally Posted by Steve K
Want to upgrade my 2007 Road Glide cam - have V&H fuelpak, K&N HP air filter and V&H true duals. Suggested that I try an SE 255 or S&S 510 - any suggestions or advice?
With a 38° intake close I would expect the SS510's to harm low-end TQ with stock compression while increasing midrange and peak-HP. SE255's will not produce as much peak-HP increase but with their 25° intake close will retain or increase low-end characteristics and will move the TQ curve up without shifting it to the right. The SE255's are a very popular bagger cam set because they provide a useful power increase for stock engines without making other changes like higher-compression pistons. The power range is where most of us ride, in the low-end and midrange, not at an RPM realized after a downshift or two. Neither cam is "best" for everyone as any given rider will have different needs and expectations.
After about two years of researching cams I installed the SE255's to my otherwise stock TC96 (with PCV-AT, AC, and mufflers) and the results were very much to my satisfaction for my type of riding.