84CUCV
3/4 ton status
what is so good about this block? i thought i heard it was a good one to build up or something like that. thanks
CK5
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82 6.2 block
- Thread starter 84CUCV
- Start date
grimjaw
1/2 ton status
As I remember, its the high nickel block.
84CUCV
3/4 ton status
OK not sure what that means. could you go into it a bit? i thought all cucvs blocks where like that?
grimjaw
1/2 ton status
the high nickel blocks do not wear as fast as the other ones and are a bit stronger.
84CUCV
3/4 ton status
OK any chance you know if the cucv 6.2s are that way?
BKinzey
1/2 ton status
IIRC the higher nickel content made for a stronger block.
However later blocks had other improvements all the way beyond GM's manufacture
when GM went to the Duramax. The final, and best, blocks were put in the HMMWVs. Of course after '93 the engines became the 6.5 but you can have a 6.2 with a 6.5 block
Sorry, I don't know exactly what blocks had what improvements or the final official block manufacturer. If you know the first 3 numbers of your blocks serial number you can find out it's pros & cons. Mine is a 499 from '95 and had those numbers cast in the left side of the valley but not all engines have them there. I saw them when the intake manifold was off as well
However later blocks had other improvements all the way beyond GM's manufacture
when GM went to the Duramax. The final, and best, blocks were put in the HMMWVs. Of course after '93 the engines became the 6.5 but you can have a 6.2 with a 6.5 blockSorry, I don't know exactly what blocks had what improvements or the final official block manufacturer. If you know the first 3 numbers of your blocks serial number you can find out it's pros & cons. Mine is a 499 from '95 and had those numbers cast in the left side of the valley but not all engines have them there. I saw them when the intake manifold was off as well
BKinzey
1/2 ton status
Yes, the early blocks were high nickle content but were dropped to lower cost. I don't know when design improvements overcame the loss of high nickle.
BKinzey
1/2 ton status
Go to www.dieselplace.com and look in the forums there. They have a forum for the 6.2 and one for the 6.5. Look through the FAQ and sticky posts to find more info than you can remember
84CUCV
3/4 ton status
cool thanks for the help
