Can you get to 400 without turbo or super-charger

Crash

I'm not saying it's impossible to tune a VVEL system. The LS3 is technically a new motor as there were some basic changes between the LS2 and the LS3 (besides displacement), but the VVEL system changes the VQ37 from the VQ35 enough to make it so the old tuning methods are different. Every time GM comes out with a new LSx motor (the LS9 and LSA excluded because they're force inducted) it's been exactly the same process for tuning. Reverse engineering isn't totally necessary for the VVEL system to be tuned. It just needs to be mapped (like you said) correctly based on the requested amount of power (which is how it's setup as is). The VVEL system basically changes how much lift the valves get, correct? So we're really look at cam-grinders getting their hands on this for tuning.

The only real new technology the LS motors have gotten lately is variable timing, but that's easily turned off to turn your LS motor into a performance LS motor.

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2002 Corvette Z06 - Totaled
2003 Corvette Z06 50th Anniversary