[Spktyr]

The “Vortec 5.7” is an old Chevy 350 with a sticker on it. The “Vortec 5.3” is a LS-series that only shares the bore centers with it.

[hecticskeptic]

The “Vortec 5.7” is an old Chevy 350 with a sticker on it. The “Vortec 5.3” is a LS-series that only shares the bore centers with it.
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That’s true... I think both are fairly good engines. I like the simplicity of the 5.7 but I’d perhaps give the edge to the 5.3 if the AFM is disabled...