| quote | Originally posted by The ROK:
So pretty much there is no diff b/t th 1 &2 besides the displacement? |
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The LS2 also uses a drive by wire throttle body. The LS1 uses a traditional cable trottle body.
There is no 5.3L LS1. There is a 5.3L version of the Gen III LS-series engine, but it's got a different designation. Not to be picky, but just to clarify, if you have an LS1 it's a 5.7L. LS6 is also a 5.7, but with different cam, heads, intake, etc.
There are multiple 5.3L versions of the engine. Some aluminum, some cast iron, as well as the LS4 front wheel drive version.