05dodgezilla

This might be a stupid question..but can a 06 5.9 head be put on a 07.5 6.7 ? if not why?

got_soot

? kinda curious why would you want to...

Blake Clark

I actually think that it would work. Dont quote me on that though. Maybe lil dog will chime in, he may know.

AH64ID

I am not sure it would work that way with your electronics...

But a 5.9 head will work on a 6.7 block, with 5.9 electronics and ECM... There is a local guy with one, I guess the extra displacement spools the turbo pretty quick compared to a similar 5.9.

cbrahs

yes it will work. ultimate sleeper. a stock 6.7 will spool a silver 66 turbo very nicely with the extra displacement. I am in the hunt for one myself.

Blake Clark

What would be the advantage of such a swap???

cbrahs

larger displacement. only using the bottom 1/2. get the 6.7 with NO emissions.

Blake Clark

What would be done as far as the injectors. Could you use a 5.9 set or do you have to use the 6.7 set cause they have the ecm "learning" to deal with.

AH64ID

You can only do it with 5.9 electronics (as far as I know)... But 6.7 injectors and nozzles would be needed (or at least nozzles to match the piston bowl design).

You could also put a 6.7 rail pressure sensor in and run a little more pressure with stock programing, since the 6.7 injectors are designed for more pressure.

But the main reason would be the increased displacement.

Goofball

There was a guy in diesel power a while back with a sled puller that had been running a 6.7 block with a 24 valve head and a P-pump

05dodgezilla

i wounder if the blown head gasket issues would be resolved aswell?

Blake Clark

Ive been reading about that elsewhere and that is a good point.

What all would be required for this. A new ECM, new manifold, etc???

Wonder if it would be worth it to go 5.9 head, studs, etc to go with twins vs the 6.7 twins setup from Rip Rook (or similar)

Im starting to think that for 600+ hp Id forgo the EB.

cbrahs

would have to run 5.9 injectors with nozzles to match the spray pattern for the 6.7

5.9 electronics. the only thing for the 6.7 you would run is the block itself. all others would be 5.9

i would rather use an aftermarket EB than that VGT. too many issues with the VGT and what would you do for electronics? Cheetah?

Blake Clark

More or less considering doing away with the VGT all together with a compound setup.

Maybe easier to just leave the 6.7 head in place and swap for a good 5.9 manifold with twins.

Just curious, at what point does the 4" become too restrictive and the 5" needed for flow??

Zilla sorry for the hijack, but figured it was all kinda relevant for a big build....

05dodgezilla

from what i've always been told anything over 500 hp 5 in.