Older 6.2 better than new?

[Macguyver82]

I've noticed that the majority of older 6.2Ls left date from the '82 model year, is there something special about these first year engines?

The older (82-84) engines also seem to get better fuel economy without a hit in power compared to the newer units. Different head/precombustion chamber design maybe?

It's been said the red blocks have a higher nickel content, can anyone shed some light on the differences?

Thank you much,

 

[towcat]

"rumor" has it that the early 6.2 blocks have high nickel blocks and solid webbing on mains 2,3,&4. Honestly, I have never done a 6.2 in my cylinder boring and honing machine, so I can't verify on the nickel content. supposedly, the cat's ass setup these days is the improved 6.5 block, but I will have to wait a few years after the BS in the sandbox is over with so the stuff shows up at the GSA auctions again.

 

[Macguyver82]

Thanks Towcat,

I've been considering turbocharging mine (for the past 10 years...) but still in the process of determining what the best parts to use are, IE block, crank, heads etc. The #599 block (92-93ish?) is rumored to be the best candidate but I'd have to get a new crank to match the 1 piece seal. The new AMG 6500 units improve on the GM design big time but big $$$.

 

[haz-mat19]

Diesel power magazine did a full build up on a 6.2 and added a banks turbo. It was a good artical, might be worth picking it up to get some ideas. See ya

 

[holtzer1]

really? know what date/month/year the mag is? my 82 6.2 is running strong with 240k on the clock...just dont wanna start when its cold..lol

 

[Macguyver82]

I could do like Radar O'Reilly and send an AMG motor home in pieces!

This one's on a Blazer:
http://www.fourwheeler.com/projectbuild/7914/

the kit is around 2K, it includes a full exhaust system too.

 

[haz-mat19]

It was last months magazine the winter edition. It says lethal combo on the front.