Pro's and cons of building a 6.4

[YoungDiesel27]

You lay the gasket on it and drill through the holes til you hit the jacket

 

[dangerous06]

ok progress made things noted:
Cross over tubes are stainless and a bit different from the 5.9 can they be used?
Threads are the same as the 5.9 feeder tubes.
6.7 uses a 200 degree thermostat WHY? Smog I bet!
Still looking for input on the hone!
AND the marine piston part # think MuMau will have it?

 

[YoungDiesel27]

Yes use the 6.7 crossover tubes.

 

[EPA Violator]

yeah the 200 tstat is a waste I ditched it on my 2012 for a 190

 

[dangerous06]

THE Auto flex plate looks very stout will it work?
And the starter has a way better power connection compared to the pain in the ass 5.9 starter! Can it be used?

 

[dangerous06]

OK so I honed the cylinders and here's what I got. I can't believe the ring wear on a motor with only 116k! And the piston skirt scoring is pretty bad!

 

[59turbo]

I wonder if EGR used on the 6.7 caused that cylinder bore wear?

 

[Runninlean]

THE Auto flex plate looks very stout will it work?
And the starter has a way better power connection compared to the pain in the ass 5.9 starter! Can it be used?

I am using a 6.7 auto adapter and starter with a 5.9 FP on my 04.5. The newer FP's have a slightly larger bore as the new 6.7 crank has a slightly larger centering shoulder. Not sure what year this started but first noticed it on a 13. Also note the newer style feeder tubes will work and now supersede the older 5.9 style tubes when ordering new ones.

 

[straight 6 roar]

So you're saying 6.7 tubes are fine to use in a 5.9 head and injectors?

 

[dangerous06]

So you're saying 6.7 tubes are fine to use in a 5.9 head and injectors?

Yup exactly!

 

[Marq92]

Depends on what you're going for, the 6.7 will help spool up and the 6.4 will hold up better in high hp.

I wish there was a thread for doing 6.7 VP. LOL

 

[jlibert]

Depends on what you're going for, the 6.7 will help spool up and the 6.4 will hold up better in high hp.

I wish there was a thread for doing 6.7 VP. LOL

Almost. Some guy on here was converting newer 6.7 trucks to ve.

 

[97rada]

That looks rough. No way I would run that. Just curious why are you doing a 6.4? Isn't this more of a tow rig type truck

 

[Snedge]

AND the marine piston part # think Mumau will have it?

4309259 Piston kit Marine std. (coated skirts. Same as automotive dimensions)

4309260 020 marine piston kit

 

[dangerous06]

4309259 Piston kit Marine std. (coated skirts. Same as automotive dimensions)

4309260 020 marine piston kit

Looks like I'll be needing the .020 kit! Can you shoot me a price!
Thanks Andy

 

[dangerous06]

That looks rough. No way I would run that. Just curious why are you doing a 6.4? Isn't this more of a tow rig type truck

For the power and displacement which equals a bad ass tow rig!

 

[Big Swole]

For the power and displacement which equals a bad ass tow rig!

Great Answer!! LOL

 

[97rada]

Why not use the 6.7 crank then? It will provide even more displacement

 

[smoke machine]

Watching this thread. I plan to run a 6.7 in my haul truck and my 6.4 in my race truck.

 

[Marq92]

I think the excessive rod angle starts to split the block in high hp applications, ~1200hp+, above 1000hp it depends if they can keep the high torque out of the bottom end of the rpm range.