Acquired this block from a buddy for helping him do some work, I'm just curious if its salvageable or not.
one of the valve seats drop and destroyed the piston and put a hole in the sleeve/block mabey a little larger than a quarter and goes through to the water jacket.

(hole is twords the inside of the block)

 

MID sleeves and it'll be good to go

 

That's big money though

 

Then scrap it. There's no viable repair for a stock sleeve damaged like that

 

i bought a complete 6.2 engine that was apart when i had every thing looked over a couple bores had some scars that needed more boring then i was ok with for what i was looking to do, i looked in to getting it sleeved when i found out the cost i bought a new GM block

 

You can have that 1 hole sleeved. It's about $100 for the sleeve. They machine the bore out and leave a little step toward the bottom of the cylinder. They do an interference fit and use an adhesive to bond the sleeve to the block. They usually shrink the sleeve with dry ice or liquid nitrogen and drop it in. When it normalizes it expands.

Talk with your local machinist and see if its cost effective for you. It might run about $300 in labor to sleeve and bore the hole to save the block.

 

That won't fix the hole in the aluminum tho. That just replaces the liner

 

Melling makes replacement sleeves but that might be a boat anchor. The machine shop will know.

 

It can be repaired. The question is whether or not its cost effective to do so

 

You're a good friend to have if you work for trash lol