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Old May 5, 2007 | 12:38 PM
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slohatch91's Avatar
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is there any difference in the gto ls2 and the trailblazer ss and are there any differences in the ls2 top end from the ls1? as far as rockers. heads, cam and intake manifold?
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Old May 5, 2007 | 07:17 PM
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I think the ls2 is the same in the gto and tb. I am not for sure though. As far as the heads the ls2 has 243 heads and a 90mm intake and throttle body.
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Old May 6, 2007 | 04:00 AM
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LS2 GTO -vs- LS2 TBSS.
Different parts: Manifold, Throttle Body , and possibly the Crank Timing Sensor (GTO's 04 to 06 had the 24x crank sensor). The newer TBSS's might have the 58x crank sensor.

Differences between an LS1 and LS2: heads, manifold, and cam on the topend... with piston's, block, cam timing sensor location, and knock sensor location on the bottom end.
And thats just the general differences.
Manifolds go like this. LS6>LS2>LS1
Heads go like this LS6>LS2 (ls6 has lighter valves)>LS1
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Old May 11, 2007 | 07:18 AM
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you can't really say the ls6 heads are "better" than the ls2

they are the same heads and everything, same size valves, just the LS6 ones have lighter valves, which in the end doesn't really mean much if anything at all.
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