Differences between 4.8L, 5.3L and 6.0L

[RedHeartbeat]

they cast a larger bore into the piston liner area on the 6.0. The 6.0 block is a different block than a 4.8/5.3 block. The 6.0 block can be bored out +.030" larger to make it a 4.030" bore, too. The 4.8/5.3L block can be bored out to fit an LS1 piston up to 3.905" bore making it a 5.7L if you have that done.

[thunder550]

The 6.0 block can be bored out +.030" larger to make it a 4.030" bore, too.

I've actually heard that a 6.0L block can be taken as far as .080" over, but I've never seen it.

The 4.8/5.3 block bored to accept an LS1 piston and with a 4.00" stroker crank will make a 383...not too shabby for a block you can pick up for $100 or so.