Is there anything that would prevent a 3V V-10 from working with the electronics and sensors from a 2V V-10?

If that won't work, would 2V heads fit onto a 3V block?
Thanks!

 

No one answered this one yet?

First, the 2-valve heads will work on the 3-valve block. Use the timing cover from the 2-valve, and swap everything over.

Second, and the BIG QUESTION: Will a 3-valve go in place of a 2-valve:

The QUICK (and unbiased) answer is NO. There are WAY too many things going on that need to be taken care of. Here's a list:

1) Throttle control. The 3-valve uses fly-by-wire, the 2-valve uses a cable. It is possible to fabricate something to make this work, but there's more:

2) Variable-plenum intake manifold. Controlled by the PCM, this helps low-end-torque and high-end-power. You can fabricate up a vacuum-based-controller for this, but it's not a 100% fix, and again, needs some fabrication and a lot of playing around.

3) Exhaust. I'm not sure on this one, but someone once said that the exhaust manifolds might not fit in a leaf-spring chassis, because the chassis is narrower, but I can't remember if that's true or not. But even if it fits, the stock 2-valve y-pipe will not match up.

4) Cam Position Sensor - for whatever reason, the 2-valve PCM throws a code, when connected to the 3-valve CPS. This one is tough to work around, there was a guy here who did all the above, but came up against this, and just figured a check-engine light was OK (go figure).

Is it possible? Sure. Anything's possible when you can fabricate your own brackets, or throttle body adapter, or a slew of other customizations.

Is it feasible if you need a new motor and just want to bolt something in and go? No.

 

Thanks a lot for the info! I am getting ready to put a V10 in my 1999 F-250 LD, so I have a lot of unknowns that I am trying to sort out before I start spending $$$ on this project.