Ultradyne SFT cam

bluefish said
Sounds like it works quite well. Justs goes against what I learned with over camming. Usually nothing bigger than 270@50 with 12.5:1 or its over cammed. not sure why that cam works do well with lower compression.

That Bullet 640 is a good cam too..The old Ultradyne that Bullet is making now..It doesn't have quite the duration that the 650 Comp has.