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Between the LS6 and the LS2 block, which block has more performance upgrade potential. I'm trying to deside which one to purchase and do all forged internals. This will be a moderately FI motor. C5R block or Darton Sleeves are not the way I want to go.
LS2 block has a 4.00" bore. Larger than the LS1/LS6. More cubes. It's also got a couple things you need to do to make it work in a C5.. Not bad though..