anybody know the valve sizes on 2.8/3.1/3.4 heads??
also what about the flow?
are any performance heads made (none that i know of)?

so far i squeezed 194HP out of a 3.4.....................basically the only mod it had was the Crane Compucam...................so that seems a little generous..................

anybody know if the Crower cams would be too much for the ECM to handle?

if i was to use more of an extreme cam, what would need to be changed in the PROM?

a greater lift cam causes more pressure, so i would have to account for that somehow...................