Im new to the subaru game im looking to put a 2.5 from a 2000 impreza in my 99 outback have the engine and trans from the 2.5 ready to pick up wondering if it is going to be a big job

The outback engine is a Phase I DOHC.......the Impreza enigne is a Phase II SOHC

 

Won't work without some mix and match o wiring........and even then there are gonna be issues with the IAC.

 

 

Not a direct swap

the outback that i have is a sohc not sure what the 2.5 is havent gone and looked at it yet if they are both sohc will it go smoothly

the outback that i have is a sohc not sure what the 2.5 is havent gone and looked at it yet if they are both sohc will it go smoothly

 

You have an Outback Sport? (Impreza Outback?)

 

I was confused. I always think of "Outback" as meaning Legacy Outback. A 99 Legacy Outback will have a DOHC engine.

 

 

If both Motors are Phase II then you should be direct fit , or at worst should able to simply swap your intake onto the new motor.

If his 99 Impreza OB is a 2.2, it will be a Phase 2 SOHC

I want to do this to my lifted OBS, one day...