is this too large a diameter pipe?
is this too large a diameter pipe? my friend has an 01 silverado that will be getting a 408 soon, and the local shop recommended a dual 3" exhaust with an x pipe and borla xr1 mufflers (no cats). The headers are ceramic coated pacesetter long tubes. any one have any ideas?
No, I dont think its too big. Running 2.5" might beef up the low end torque a little bit, but its questionable wether or not youll be leaving some HP on the table. Id say the 3" pipe will be a good fit.
That would be an awesome choice for him. That 408, that stall, and that gear set is going to make for a stump puller. 
The mufflers can be swapped around if he'd like. A set of 1-chamber flowmasters or 2 3" in/out 40 series would work well. The trucks are not as constricted as far as clearance goes. They can run mufflers that actually "muffle" and sound great. The 3" duals w/ x-pipe is a great choice (on any application), and his options are pretty open as far as mufflers go.
The mufflers can be swapped around if he'd like. A set of 1-chamber flowmasters or 2 3" in/out 40 series would work well. The trucks are not as constricted as far as clearance goes. They can run mufflers that actually "muffle" and sound great. The 3" duals w/ x-pipe is a great choice (on any application), and his options are pretty open as far as mufflers go.
i should have been more clear, the truck is lowered 5 in front and 7 in back, so clearance may be an issue, which is the reason for the slim borlas. just worried about the pipe diameter mostly. thanks!
Originally Posted by up2nuthingud
i should have been more clear, the truck is lowered 5 in front and 7 in back, so clearance may be an issue, which is the reason for the slim borlas. just worried about the pipe diameter mostly. thanks!
3" duals (according to some flow/square inch info posted a few days ago) is good for about 740rwhp before any kinda problems arise.
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