yeah i knew there would probbbaly be some low end power loss wasnt sure how badly though. alright thanks for the input everyone im gonna have to look into different mufflers and maybe running a 3 inch all the way through, maybe duals.

 

True that.
I'm sure you could change gears to offset the load end loss.

 

hahaha the trucks got 4.10s from the factory

 

Then pop in 4.88's.

 

I love my Thrush muffler...even though it's currently disconnected because of exhaust work...