4.0L OHV 2.9 rockers on 4.0 heads. anyone done it?

[FildoDagginsRHEC]

I had read somewhere in this goldmine of ranger info that is TRS.com that "the only way to get ride of the 4.0 ohv valve tick is to get the heads milled to accept the 2.9 rocker rails.

now, I have brand new clearwater cylinder heads for the 92' 4.0 I have.
I also have [2] 2.9 motors 86' & 88' CA emissions and a 76' 2.8

has anyone done this? put the rocker rails from a 2.9 onto a 4.0?
anything specific I should look for in doing this?

 

[franklin2]

Installing the 2.9 rocker system is a improvement? They had and have plenty of ticking and oiling problems with the 2.9 also. Looks like the 4.0 receives oil on top just like the 2.9

 

[FildoDagginsRHEC]

I had read somewhere in this goldmine of ranger info that is TRS.com that "the only way to get ride of the 4.0 ohv valve tick is to get the heads milled to accept the 2.9 rocker rails.

now, I have brand new clearwater cylinder heads for the 92' 4.0 I have.
I also have [2] 2.9 motors 86' & 88' CA emissions and a 76' 2.8

has anyone done this? put the rocker rails from a 2.9 onto a 4.0?
anything specific I should look for in doing this?

I found the information I was looking for...

4.0L OHV Thread '92' 4.0 clear water cylinder heads and Elgin Industries rocker arms and push rods'

May 18, 2026

i had read on here a few months ago about clear water cylinder heads and elgin industries rocker arms and push rods that are said to fix the valvetrain tick these 4.0's develop. my question is, the pushrods do not have oil gallery passages running through them. (grew up building 60's mustangs with dad, 289's and 302's have the hole rifle drilled through them for oil.
i guess what i am asking is, should i call the manufacturer and request a return?

• FildoDagginsRHEC
• Replies: 6
• Forum: 4.0L Engines

user gaz suggested it. just like to see if anyone else has done it or has heard of this.