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Old 02-21-2004, 11:44 AM   #12
pdiggitydogg
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Join Date: May 2002
Location: Meanwhile, up in The D...
Age: 42
Posts: 10,579
The ls and the b20 is the same blocks essentially. The only way that the b20 differs is larger bore. The cranks are the same. Ls has 9mm sleeves and b20 has 7mm.
Pistons and headgasket are different thicknesses.
Heads are identical, valvetrain is different.

Seriously, if you can get a super cheap b20 shortbock, and a ls head (both can be obtained separately for less than a b20 longblock) you'd really be set. Take the money you saved over most motors to resleeve it for boost over 6psi. Slap on a gsr tranny and biggitybam...awesome-ness.
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