exhuast with LS engine?

[brans72]

Would 2 1/2 exhaust be big enough to feed my 425 rwhp LS powered Chevelle? Brandon

[TURBO2276]

How loud will it be with 3" all the way back? Will be running a 700 hp LS7 , i'm not worried about noise suppresion, what is the least restricitve muffler set up to run to make it as loud as can be!?

[Rybar]

I'm running full 2.5" dual setup with a 450+ rwhp LS1. Should be fine. You want more torque with the smaller cube motors anyways.