325 manifold on a 320 head

[daveo]

has any one fitted a 325 manifold and throttle body on a 320 head if a was to what type of gains would i achive

[Brianmoooore]

has any one fitted a 325 manifold and throttle body on a 320 head if a was to what type of gains would i achive

Big ones, as long as you attach the 320 head to a 2.7 525e bottom end, otherwise gains are going to be marginal.

[daveo]

i was thinkin about that but i want to get the head sorted before i put the 2.7 bottom end in.so the manifold would fit do i need to change the fuel rail and injectors.