I have a gmpp lsx454 with the typical bolt ons. Car made 540hp and 570tq at the wheels in a humid august day here in pa... I was told by the tuner if I come back in these cooler fall months I can expect 560-570 and 590-600ish... If you have any questions please feel free to pm me or see my build thread:
You can't get that kind of torque out of a 6.2 though.
I have no doubt that engine will make the advertised horsepower.
with sleeves you can but it would no longer be a 6.2
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Its only money/ 68 camaro/ Rich Sliwinske(PRECISION ENGINE AND MACHINE) 447 ci ERL sleeved/ landspeed development ported heads L92s/speedtech subframe/DSE mini tubbs/