I'm replacing the engine in my 97 expy and the new engine has the PI heads.
I found a thread a while back that mentioned some minor changes that would need to happen with wiring and some sensors, but for the life of me, I can't find it now.
Does anyone know what changes need to be made when going from 97 NPI heads to 99 PI heads?
I bought a new intake to match the heads.
Thank you,
Devin
I found a thread a while back that mentioned some minor changes that would need to happen with wiring and some sensors, but for the life of me, I can't find it now.
Does anyone know what changes need to be made when going from 97 NPI heads to 99 PI heads?
I bought a new intake to match the heads.
Thank you,
Devin
