You could sneeze on an LS3 or LS2 and make over 500hp.
I still think the best "bang for the buck" in new crate engines would be an LS2 with a cam.
I made well over 500 (560hp) with an LS2, AFR heads, COMP cam (232/234 112) and FAST intake.
I haven't messed with an LS3 yet but the intake and heads (GM) are great and you could easily up the cam and make over 500. Just do some research since camshaft selection is more critical due to the huge intake valves in the heads.
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"A ship in port is safe, but that's not what ships are built for."
Thanks Steve...that's exactly the kind of information I was looking for. Thanks for the article...I'll be hanging on to that one for a while.
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Mike
Pro Touring 68 Acadian(Nova)
Speedtech subframe with high clearance control arms
Prodigy Bar rear suspension
Ridetech single adjustable coilovers
Wilwood 12.2" brakes
New Gen Splitters
LS3 and TKO600