6.2 casting # with one piece seal

[chevytrucksonly]

Trying to get the block cast # for later model 6.2's with piece seal?

Thanks

 

[just a number]

IIRC the block number is 599. same as the 6.5

 

[iamdave0887]

IIRC the block number is 599. same as the 6.5

x2. The 599 block was originally a 6.2 block. It was bored over later on in life(92-93) to create the first 6.5 block. The "true" 6.5 cast blocks are the 141, 929, and 506 blocks.

 

[countryboy69]

HAve y'all ever seen a 660 block with 1-piece seal and bosses for the turbo oil pressure line? Also had a hummer pan and was set up with the crank sensor. What in the world do I have?