4.0 li throttle body in place of 2.5 li throttle body

[Josh95YJ]

I never really agreed that replacing a 2.5 li throttle body with one from 4.0 will make any difference, furthermore would an adapter be needed or will it bolt right up using the spacer that is with the 2.5 now. Is it really worth it and does it produce gains

 

[b.hog]

ya it will make a difference(you'll see)it will bolt right to your intake manifold either with a spacer or without,but you need to switch ALL your sensors from the 2.5 tb onto the 4.0 tb.If there is an extra vacuum port on the bottom of the 4.0 tb after your done with install,plug it.

 

[Dittrich31]

My question on the subject is I have a bored out throttle body and spacer by putting on a larger throttle body will it not matter since the intake itself isnt bored out? I have already put it on and havnt noticed much which was expected, just gonna wait for the first few fuel ups and see how its effecting that area.