yep that should be about right, the LT1 has a good bottom end but makes it's PEAK torque @ 2500rpm or something similar. I think the Vettes are rated at 300bhp though (275bhp Fbody), so they arn't what you'd call a slouch.
The 3v setup on the GT and the OHC design means it's going to like the higher rpms more.
In performance terms, it should be pretty close, but I'd give the nod to the GT with a good driver.
You might be ok versus a LT1, just watch out for those LT4s. The spin faster and have 30 more horse. I just traded in mine to get my new 06. It rides nicer, but that LT4 was a torque monster.