down pipe

jeremylillie · #1 (**permalink**) 03-06-2007, 04:59 PM

I was woundering how big the down pipe is on my 06 6.0. I think it is 3.5 in, but iam not sure. I would like ot put a full trubo back exhaust system on but i have been told that if i go with a bigger down pipe that 3.5 in it will crack do to the tourqe of the engine and the fire wall. so i am trying to find away around this, if someone could help me that would be great.

Blurry94 · #2 (**permalink**) 03-09-2007, 05:18 PM

Bump.

FTE Herman · #3 (**permalink**) 03-09-2007, 09:01 PM

Jeremy, you might try your question in the diesel fourms as well.

6L PWR · #4 (**permalink**) 03-09-2007, 11:19 PM

I put a 4" on my '06. It requires a little modification to the pinch weld of the firewall to fit, but it will fit. Specifically, take a hammer and beat the crap outof the pinch weld until it's flat.

Putting a 4"DP will make you lose some low end torque, unless you're pretty well modified.