is it possible to run a f22 bottom end with a f20 head?

 

F20 SOHC or DOHC?

 

a f22 bottom end with a f20 dohc vtec head? im trying to build up my f22.

 

Yes it is possible. Whether or not you see any gains is dependent on what other changes you plan on doing. It is very similar to doing an H22 head swap. Lots of information about the swap if you take a look around.