Military N.O.S. Pistons

[Robyn]

I have run across some military replacement pistons for the 6.2L
The writeup says 20:1 compression
The stock civilian 6.2 is listed at 21.3:1

I just finished getting a late model 6.2 599 Block all apart and steamed out.
The engine had been run with a Banks turbo and lost 2 rods.
The bottom end was a 5 alarm trainwreck. Crack was gone as were two rods and two pistons.

I tossed the crank, all the rods and piston in the trash.
The heads look sweet.

Now I have built several GM diesels both 6.2 and 6.5

Do the military pistons have a lower comp ratio???
This would be sweet for a turbo engine.

Any input please.
also I just landed two sets of Sealed Power pistons NOS for $122 a set.
The same pistons here sell at my shop cost for about $68 each.


Sealed power have always been good stuff for every engine I have ever built.

Boxes look to have been packed all over creation.

Let me know guys

[dieseldummy]

If those military pistons are Clevite boxed they are more likely than not Silvolites... I have a whole thread in the 6.2 section about my opinion of Silvolite pistons if you really want to know. I bought mine off of ebay for $120 for the set and was less than satisfied. They were not .010" shorter like advertised either...

I guess I held off for too long on those sealed power units on ebay... At least they got a good home. I'm building a 6.2 with a set of Sealed power units and I have to say they appear to be built better than most.

[Robyn]

Best pistons I have seen are the Mahle

Not sure what the factory is using in the 6.5's