Will be increasing displacement soon, need some info from those in the know. Bike is 05 superglide 95" with 6G and stock heads ported for velocity and stock size valves. So, how much displacement will those heads work with at 6000 feet and more? And also the stock headers? Want to save as much $ as I can on this. Want to go at least 107" Thanks much for any information.

 

If the heads were ported well you might be ok but check to see if you have enough spring pressure to bump the cams and get the compression up as well. Especially at your altitude.

I'm doing another 113" build right now and chose a woods 9B cam with 11:1 pistons because I am also in the 5000' plus altitude range. With corrected comp @ 10:77 this cam should move it along nicely with great torque.

Who did the heads and what other peripherals do you have?

 

Heads are JET jobs, for 95" with 510 cam, 85 cc chambers. Hoping to use the heads, cam, and stock headers with a 107 if possible, maybe save a few $ in the process. Since these heads were ported to flow at sea level, I was curious if they might work on a 107 at 6000 feet and higher. Just wanted to be informed as possible before I take it to someone to do the build. I appreciate any info.