Originally Posted by bigthoogs
I've seen some people running ej253 blocks with phase 2 ej22 heads. I've got a 99 legacy 2.2 and I need heads baaaad.
Well, the phase 2 2.5 heads will bolt up just fine along with your intake manifold, but combustion chamber size will be slightly too big for the 2.2 bore of your current engine.
So, 3 choices:
1. Find phase 2 2.2 heads,
2. Find another phase 2 2.2 long block and swap it in,
3. Find a 2.5 block phase 2, then find the phase 2 2.2 heads and put them on the block for a higher compression franken motor.
Since your car has a phase 2 engine, you won't be able to put the phase 1 2.5 heads on your current 2.2 block because of the wiring and such.
What happened to your current heads?