That depends. If the GZE is a big port, then the 86kw head will be identical to what you already have.
It its a smallport ZE then the 86kw will have slightly more cam lift and duration which could improve things, but then your intake manifold won't bolt up.
In short, no its not worth it. Bigport cams into smallport ZE head may be, but that's still debatable. If you have further questions search harder, as it's been discussed before.
Thu, 15 September 2005 13:32
