Originally Posted by Dyna Ryda
If the MVA's come at 93cc they would need to be fly cut about .065-.070 to get to 84cc and keep the CR at 10.5, anyone ever cut a head down that far?
No because they cant be cut that far.
If you use them out of the box. That means no chamber work. You might get 91cc's. 93 cc is the norm with the chamber work.
So dont fight it,they cant even be cut far enought on a 120 r to get to a true 10.5 compression with flat tops.
If you want to use them in a 107 you need a piston that gets you where you need to be. Then rock and roll.