High Nickel 82 block

[Blzr6.2'83]

I found an 82 block with the cast number being 14022660, and it was cast on 3/2/81. It was also a J code. I want it to build a strong good engine. Is this a high nickel block, or does it have to be a 599 block?
THis is the link to it on ebay,
82 block (http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7990364643&sspagename=ADME%3AL%3ARTQ%3AUS%3A1)

[john8662]

Thats the high nickel block, all 6.2's end in the 660 cast number, except the 599 version that was made in the 90's. The 599's are just like the other blocks as far as the metallurgy is concerned, no better no worse, it's just a good block to build from for doing a 6.5 because it doesn't have the piston oil spray coolers that killed the later 6.5's made 97 on up.

That engine would make a great builder.

[mhagie]

Stay with the high nickel older block, the main selling point with the 599 is that as the latest 6.2 it had thick cyl walls as it shared duties as both a 6.2 and a 6.5 just by the bore dia.
I would only bore the 6.2 what it takes to clean it up,with all the goodies a 6.2 will be respectable compared to a 6.5
Merle

[Dieselboy]

Ditto on the above.

The most important things to get from a 6.5 are the 4911, injectors, and heads if you can them.

Stick with the heavy duty block.

[opto]

What's the difference between the 6.2 heads and the 6.5 heads?

[grape]

i have one of those magic 599 engines in my shop as a mock up motor. It has all the mains cracked out of it and a cylinder wall blown out into the water jacket........guess they aren't all that different after all.


the 6.2 heads will differ in pre-chamber only. Unless it is a set of 82 heads which will have course thread injectors, and 1.60 exhaust valves instead of 1.50's used in all the later engines.

[Blzr6.2'83]

I wish it was closer shipping is probably going to keep me from buying it.

[Dieselboy]

6.2 vs 6.5 heads:
Primary difference is the prechamber. Other function differences are the angle of the injector seat, the cooling passages are slightly different, and there are different holes drilled into the heads for accessories and stuff.

[NH2112]

Originally posted by Blzr6.2'83:
I wish it was closer shipping is probably going to keep me from buying it. I bought an 82 block on eBay a year or so ago (for $10 LOL), and shipping from MO to NH via Forward Air was only about $90. I had to drive to the nearest terminal to pick it up, which was only a little over an hour away (in Everett MA.)

[Ratau]

BLZR6.2'83

How did you ID that block as a "J" code.Is there markings on the block?

[john8662]

The auction where the block is being sold, it's described as being a J code engine. It really doesn't matter at this point though, there are NO markings externally on the engine to tell. Meaning, as far as casting numbers, it's not going to tell you C or J.

The way I identify them is by the intake, but once that's gone, who knows..

[Blzr6.2'83]

How much would a high nickle content short block be worth? I found one at a local junk yard for 500 and think it is high, because they want me to pull it.

[wthif]

I wish I could get that much for the one in my garage, but it is worth more than that to me. :D

[Blzr6.2'83]

Any idea of what a it would be worth? I could understand 500 if they pulled it and stripped it, but that is the price if I did it. All I want is the a short block and it is out of an 82 burb, with high mileage.

[Stage1]

Is 82' only year for high Ni content, do later year J blocks have higher Ni? Is the Ni content value cast into the block, if so where?

I have several M1009's ( I call it my Blazer farm), I think years are from 82' to 85'.

thanks,
Les

[john8662]

The "Red" engines that were the initial released 6.2 had the block that was casted with a higher nickel content than later 6.2's. These engines can be identified by the physical date casted onto the back of the block, usually XX-XX-81.

The military blocks are rumored to have the higher nickel content. I'll bite that the ones with an 81/82 cast on them probably are a higher nickel content. No proof here.

But you want the higher nickel content block for a better chance of not cracking on the bottom end. The good news is that there are less 6.2's that crack than 6.5's, thats for sure, and the 6.2 has been around longer and has had many more proven miles on it.

[Stage1]

John,

Thanks, like I said I am relative new to these engines, have not taken one apart yet, are their any differences in crank and main cap material?
Is their an easy hardness test, that can indicate Ni content. I am an old CE not ME.

I am slowly making progress on my project Blazer. Hope to have it inside my shop soon.

thanks again,
Les

[Stage1]

John,

Just another thought or two, do think cylinder dial bore reading vs milage can indicate which blocks have more Ni, along w/ the previalance of cracks as you indicated. Probably machine shops that bore a lot of these block know which blocks appear to have more Ni?

Les

[john8662]

Stage1,

How to tell if the block really a higher nickel content than the other blocks? For that I'm really not sure, but you're right in that shops that bore these blocks would probably be able to tell by the amount of boring it took on the block, as it should be harder to bore.

Another builder told me that they could physically see the difference in the color of the metal.

The caps might or might not the the same as the block metal, but they're not what breaks.

Someone who could give us a better answer on how to chemically or physically detect the higher nickle content would be Dr. Lee aka The Clevite Kid.

You might want to post a new thread under "Ask Dr. Lee" on the forum, and see what turns up!

John