Port Matching A 2.5L Intake Manifold To A 4.0L Throttle Body

Swapping to a 4.0L Throttle Body goes hand in hand with boring the 2.5L intake manifold. Although the 4.0L TB works fine without boring the manifold you can easily increase your flow just a bit more by grinding out that pesky aluminum wall that certainly creates all kinds of turbulence.
Be sure to wash out the manifold thoroughly before you reinstall it on your engine!!
While you have the manifold off you might as well swap the injectors... Check out my video where I do just that!
   • Do 4 Port Injectors Make A Difference...  

Also watch me swap the 2.5L Throttle Body for a 4.0L:
   • Installing a 4.0L Throttle Body on a ...  

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