Re: Inlet Manifold - match porting
You have have to do your own dyno testing to see whether your engine likes it. The most I've seen is an extra 15rwkw and more torque gained. The basic principle is the spacer makes the engine think the carb is larger.
I ran a spacer ontop of my weiand and it worked well for my setup. The new setup has no spacer but will be tested if time allows.
XB Fairmont (street car) email@example.com.