If you get an LS1 I would look for a 2001 and up block if you plan to stroke or go for bigger HP numbers because of the changed oiling system apperently due to hard exelleration/cornering oiling problems. Most 2001+ engines have the LS6 intake manifold too. Don't get me wrong. 1998-2000 LS1's are great. My buddy has a MTI built 99' 427 Ls1 and has not had any oiling issues. I guess the safer the better.
Easy Hp is correct with these motors. On my Zo6 I had a Heads and Cam package with LG Longtubes, TPIS Throttle body, Tune, and got 532 Flywheel, 452 rear wheel Hp.
LS2 are considered gen IV rather than Gen III (Ls1/6) because:
• LS2 blocks feature a 4.00" bore, LS1 / LS6 have 3.888"
• Crankshafts, connecting rods, pistons and cylinder heads are interchangeable between LS2 and LS1 / LS6 engines
• LS2 cylinder heads are made from the same castings as the LS6
• LS2 blocks have the knock sensor on the side of the block compared to LS1 or LS6 block that have it in the lifter valley.
• The cam sensor has been moved to the timing cover (requires use of LS2 cam gear)
• LS2 knock sensors send a different signal type and are not interchangeable with LS1 / LS6
• LS1 computer will control LS2 engine, except for the knock sensors.
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--Mark Stielow Wannabe--
1968 Camaro SS
1969 Camaro SS
1969 Camaro LS7
2014 Chevrolet SS Sedan
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