Are the shims in a 3.9L head the same size as the ones in a 4.0L head?

Need to know asap so i can quickly buy a cheap cracked just for the shims.


the shims cost $72 new. i can get the cracked head much cheaper with the shims (if theyre the same size)

There are 2 different sizes, 14 mm (From memory) for early, 11 mm for late, not exactly sure when they changed but i think it was at the start of the 4.0 but i could be wrong.

Not sure if the above sizes are exact, it's been a long time.... I have a new set of the smaller shims here -1, and i may have some older ones laying around but would have to check.

are you referring to the cam shims IN the rocket arm? because these are the ones i am chasing...

I have a cam but i was told i need the shims..

they are the ones.

As walker said they did change around the time the 4.0 (sometime in the eb/ed range). The HLA's changed size and the shims changed to suit.