Will soon be changing out the stock cam chain tensioners to the SE hydraulic conversion. I already have the true duals, SE air cleaner and stage 1 download. While in there i want to do a cam change. I was looking at the Andrews TW37B, but in reading the specs it recommends a 9.0 to 9.5 compression ratio. My service manual says I have 9.0:1 but if I Google 06 ultra classic spec its says i have 8.9:1. So I am wondering which one is correct and if the Andrews TW37b work if i do in fact 8.9:1.

 

Andrews make several suitable cams and members have used plenty of them. If you use Advanced Search in this Touring forum, in titles only and search for 'Andres', you will find plenty of light reading. Their 48 and 57 get regular mentions and those threads may help you pick the most suitable.

 

the 37 need more compression 9.6 9.8 or really soft bottom check for andrews 48