[ScoopED]

G'day,

I have a 95' 5.8L Roller cam EFI Windsor.
I am using the standard Truck upper and lower manifolds (the twin throttlebody style manifold).

Can anyone tell me how good/bad this manifold is? Is the lower half better than the upper half?

What sort of MAX power will this manifold flow?

Would I have substantial power gains by making a box style upper manifold?


Thanks