Thanks for the pics I did mine just as the pic works great

 

3 inch downpipe to 3" in/out long magnaflow running over axle exiting stock location. I ran it just dumped after the muffler for about a year and it droned like hell in the cab with the windows up. I took it back and added the extra pipe exiting the rear, wow what a difference. My wife will actually ride in the truck now. Probally gonna add a cut out eventually.

 

No one actually sells 3.5'' mandrel bends like mandrel-bends.com or anything? where did everyone else get there exhaust tubing from in here?

 

Find Custom Exhaust, Header Collectors, Race Mufflers & More | Burns Stainless

 

If you have a tractor/semi supply store locally they should have some. Its about $28 per bend here but that's not stainless. You only need about 3 45* bends to go from the downpipe back to the axle depending on how long the legs are on the bends.

 

yea i was thinking about trying a tractor supply store actually one day but im trying to get parts ordered so i can just start building as soon as i get back from this long trip im on right now. and that burns stainless site is exactly what im looking for thanks for the help 03 Denali!

 

I made my new 3.5" exhaust out of a stock duramax system. Picked it up for free from the local classifieds. Turned out pretty good.







No sound clips yet

 

5" x 12" Burns stainless muffler, 5" stainless elbow......done.

 

There are some pics in my thread I started a week or 2 ago.
https://www.performancetrucks.net/fo...nifold-498199/

 

Bringing an old thread to the top, is there good clearance for 4" piping between the floor and crossmembers? If 4" is gonna bang around and be a hassle I'll be doing 3" or 3.5"