Quote:
Originally Posted by truth411
I don't think an LS7 Z/28 would have enough hp for it to be competitive to the GT-500, without cutting atleast 300lbs of wieght. I know GM can give the LS7 more power though without F.I., I have seen N.A. Z06's with 550hp at the wheels. There is still alot of untapped potiential from the LS7, it is afterall 7.0 ltrs of displacement.
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Quote:
Originally Posted by truth411
I don't get this, where is this Idea coming from that the LSA that is equipt with a supercharger, is cheaper than an LS7? I know the Gen V small block is coming, but have anyone actually considered that a D.I. version of the LS7 would be a possibility. Just it would no be called an LS7.  |
I won't even try to say that the LS7 is tapped-out, power-wise, however, there's the problem of drivability/pleasability and emissions to think about too. I could remember reading how the 'Vette engineers were pleased at how smoothly the LS9 idled as opposed to the LS7; the LS7 needs those huge CNC ported heads and pretty large cam to make the 505 horse' that it does, while the LS9 doesn't need a hairy cam and I think emissions are effected less with adding a supercharger (I believe a lot of it has to do with overlap and cam timing, from my meager understanding). I think it boils down to it being easier to slap an LSA, that doesn't require hand-building like the LS9 and LS7, nor require any exotic materials, like the forged LS9 pistons and bearing caps and the Ti rods and intake valves for both. I think it's just easier/feasable to get a smaller FI'd 6.2 to get through emissions cert' than an even hairier LS7 with a bigger cam.
JMVHO.