Intake Manifold

[BadAss4.0]

Anyone know an aftermarket one for a 93 4.0?

[John97]

I believe the only option is to have the factory manifold ported. I am unaware of any company making performance manifolds for the 4.0 engine.

[foley]

Originally posted by John97:
<STRONG>I believe the only option is to have the factory manifold ported. I am unaware of any company making performance manifolds for the 4.0 engine.</STRONG>

I concur, there is a lot of room to maneuver though in the fuel rail and lower intake... the upper plenum is kinda tough, but you can still do a lot to it, especially in the vertical runners.