I'm working on a solid model for an new, cross flow head for the Cummins, and I need the exact head bolt spacing and cylinder bore centers and spacing for the 5.9. Any of you out there have blueprint specs????

Mark

 

Uh, not to be a wet blanket but the head is already a crossflow design.

 

It's actually an 90deg head (the valves are in line with the head). I want to build a true cross flow with high ports so I can straighten out the flow. I can also use high ratio rockers that way.

 

You can already buy a redesigned billet aluminum head for 12k if I remember correctly.

 

Can't find it....

 

I would think that you would need many more dimensions than what you are asking for.Most that do a project like this would start with an oem part on hand to have all necessary dimensions.

Bob

 

Ewww, an aluminum head on a Cummins is something I've not heard of. Not like the stock all iron engine that we know as a durable unit. The Duramax is the only engine I've heard of with aluminum cylinder heads that doesn't seem to have a problem, other then it's not the best combo to have aluminum head/iron block (heard of a lot more head gasket problems with that combo). I guess if it's for performance then one isn't too worried about it, but I'd rather stick with good ol' cast iron.

 

I have a stove head to measure from, but I need the bleuprint values...

 

the billet head and other discussions are on another website. www.competitiondiesel.com