(((Notice))) AMG "Optimizer blocks" Made by Dalton foundry now.

[Burning oil]

Dalton is a USA company. The quality and specs are the same. Sold a few already and zero problems.
The P400 will still carry the Navistar logo until AMG depletes their inventory of around 2000 blocks.
Anyway bought you guys should hear it from me first.

Thanks

 

[ak diesel driver]

Where are they located?

 

[Burning oil]

Indiana I think.

Here are the new casting mark comparisons.

Navistar is up top (has back to back triangles)
Dalton (has a backward "D" and a "F")

 

[ozark]

Leroy Diesel, i have an engine pulled from a hummve. Ive been trying to info on it. After seeing your post about Dalton. I believe that is the block i have. I havent found a resource to identify the date of this engine In the grand scheme of 6.5 engines, how does this Dalton block stand up?
Can
you help me with info on this engine? Im looking to install in 84 F250

 

[SnowDrift]

Julian date code should be cast into the top of the block back by the bell housing.

 

[ozark]

Thanks for your reply,
They didnt use Julian date codes on the Dalton blocks, from what i can tell. On these blocks there is a code back passender side behind flex plate and front driver side below head
But i cant find a resource that explains the codes on the Dalton block

 

[Will L.]

Can you take a picture of where the date code usually is?

 

[ozark]

I think this is the location on navistar blocks

 

[dbrannon79]

Welcome @ozark iirc the date code for the GM ones is like the one you posted in the 4th pic

This one...


Btw, when you are attaching photos, after you select them there is an option to use full image. use that to post them big like this one. it helps us folks like me who is blind in one eye and cant see from the other LOL

 

[ozark]

I will take that into serious consideration friend!

 

[Will L.]

I can’t remember reading anywhere that showed the Dalton date code pattern.
Maybe some calls or emails sent off could get results?

 

[ozark]

Yep im working on that now, i reached out to GEP yesterday and wait for responce.

 

[JayTheCPA]

Foundry date is likely low on the list of focus items when evaluating the engine. Unless, the idea is to go cheap by just running the engine and seeing if it lasts.

One way or another, HMMWV pulled engines commonly saw a hard life. Even sitting for years in storage is not overly kind. Were it mine, I'd completely go through the engine to limit the opportunities for unplanned downtime. But, that's just me.

 

[Will L.]

Yup. Some bone head told AM General & the military that 230,240f is ok for these engines and they blow through them like candy because of it.
Meanwhile everyone else that know 220f means PULL OVER NOW & let it cool off- the engines make it a long life.
There is other things to look at & consider.

I been dedicated to the 6.2/6.5 for more years than I care to admit. But unless you are adventurous & enjoy swapping engines: get that running on a test stand before dropping in.