2.5" or 3" exhaust?

[shenk10]

I'm doing an LS2 swap, and max I could ever see performance wise is up to 500 wrhp, so is it worth it to do a 3" or will I loose low end torque now and even then and should just stick with a dual 2.5"? I also plan on doing an H pipe after the transmission. Any advice or knowledge would be greatly appreciated. Thanks.

[BR3W CITY]

2.5 is enough but 3" wouldn't hurt at that power level, and should you go much further 3 would probably be needed. Its not much more expensive at the beginning, so go three and don't worry about out-pacing it.

[68GMCCustom]

Mines 3". If you're worried about torque just put an x-pipe in instead of an h-pipe. IMHO an x-pipe is a better choice over an h-pipe as its better at scavenging. Putting one in with a 3" exhaust and keeping it all within the frame rails and not hanging below...now that's a little tougher. : lol:
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[mooseknuckles]

3" all the way, x-over, lays frame, I could post pics, but I'm lazy...

[shenk10]

I might try to do an x then, I thought everyone said it was hard without going below the frame.

mooseknuckles, do you have pictures in your build? I'll just look there and then you wont have to post up pictures.

[68GMCCustom]

Originally Posted by mooseknuckles

3" all the way, x-over, lays frame, I could post pics, but I'm lazy...

Sure with a square body....67-72's are a little tougher.
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[mooseknuckles]

Originally Posted by shenk10

I might try to do an x then, I thought everyone said it was hard without going below the frame.

mooseknuckles, do you have pictures in your build? I'll just look there and then you wont have to post up pictures.

yep...page 44-45 I think....link below.