Ive searched all over and never really got a good answer on this.

Here is my current setup minus the tranny mods:

Air Aid Intake tube with K&N filter and modified stock air box

OBX Long Tubes and y pipe/3" pipe off of Y pipe through 3"x12" summit glasspack dumped right before the back axle...a straight shot.

Crane 1.8 ratio Gold Race Roller Rockers /LS6 springs
http://www.chevyhiperformance.com/te...rms/index.html

Nelson Tune 93 octane

My question is since i don't have any head work ect. done to the motor do you think the exhaust will support the airflow having the summit glasspack?

Just want to to see some of your experiences (trial and error ect...) and opinions on what works and what don't.

What I noticed so far is a loss of low end grunt with the addition of the headers and the new exhaust setup...I am waiting on the updated tune from Nelson which shipped out today.I know a good stall and gears will help out but maybe a good muffler would gain some low end back? Thoughts?