Instaling a 3rd gen head on a 2nd gen VP block
 

I've had a few people ask me about the head swap so I figured I would post up the information and photos in hopes it might make a tech article as well.

Why: The 3rd generation heads seem to flow more than the standard VP heads.

Who: The main people that would benefit from this swap would be those in the quest for more horsepower applications.

*3G = 3rd generation
*2G = 2nd Generation VP

A few comparison photos to start:
3G on left and 2G on right
Attachment 54863

Views of the intake valleys:
3G
Attachment 54864
2G
Attachment 54865

3G
Attachment 54866
2G
Attachment 54867

Views looking down where the grid heater would be into the intake valley:
3G
Attachment 54868
2G
Attachment 54869

Phase 1 Water Ports:
Here is a view of how I massaged out the water jackets.... I used a "Burr bit" and a Dremel to do this. To make the outline of the water jacket I used the stock VP headgasket as a template and traced the all water jackets with a sharpie.

3G
Attachment 54870
3G water jacket smoothed out
Attachment 54871


*You dont have to take every bit out of the marked spot, I made a happy medium as the water ports are different. I've attached a photo below to show you what the same port looks like on the 2nd gen head with the gasket traced onto it*

2G w/ 3G to follow below
Attachment 54872

3G Before
Attachment 54858
3G After
Attachment 54859

Phase 2 fuel delivery:
You will need custom crossover tubes to allow for the stock VP lines. Reason for this is the 3G CR fuel lines screw onto the crossover tubes that in turn screw into the head.
You can purchase these from EEP, or "Monster Mike", Im not certain but I think scheids and Haisley carry them as well...
Attachment 54860

Your factory injector hold downs will work as well as all other components.

Phase 3 Sensors:
You're IAT sensor and you MAP sensor screw into the side of your 2G head, and the 3G head does not have tapped ports for them so you will have to relocate the sensors. It is a matter of cutting the wires so that you can splice on both ends and extend the wires to the appropriate locations. I decided to go with the intake valley cover, in order to do so you will need to weld up some material on the cover in order for the sensor thread to grab. I mocked up where the fuel lines, brackets and grid heater delete would go and decided the appropriate spot for each sensor where I could get to it easily and it would be out of obstruction.

Attachment 54861
Attachment 54862

Home
Enterprise Engine Performance
www.scheiddiesel.com
Haisley Machine

I hope this helps!
Ian

Nice write-up.

so how long did it take you to get it ready to bolt up?

Nice write-up.