I have an 0-290 D2 with a 0-320 solid flange crank that I run on my Pitts S1C. Was just wandering what HP or torque increase I would see if I installed an 0-320 or 0-360 cam? Are there any other HP mods for the 0-290. I have heard of machining the case for 0-320 cylinders but looks like you are starting to mess with the integrity of the case then. I also have 10 angel valve 0-435 cylinders sitting on the shelf that needs valves. I have also heard these could be used
Gene
Gene
