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quiet as a mouse. I am back in my hometown area, where as a teen i had a chevy 350 straight that recieved 5 noise tickets, and my buddy down the road w/ a 92 idi has gotten 3 or 4 this year so far for that. BUT if it were a Log truck the straights are left alone.
Last edited by jmmartin; Mar 11, 2009 at 06:50 PM.
Reason: clicked to early!!!
mine has dual 2.5 inch pipes and dual flowmaster mufflers that run into a single 3inch pipe, and i dont think you would get a sound ticket, i love the way mine sounds, now were a live i could take it off at the manifolds and go down the road wide open by the hole law enforcement that we have which is like maybe 10 people, lol and they would all tell me to get on it harder, but i guess thats how it is in the little redneck town of spencer
If you want quiet, then long, big body mufflers are the way to go.
Yep; I agree. That's why I went with my HUGE 6" x 12" oval stainless muffler. Although it's 3" straight-thru, it's 25#. Felt like it weighed a ton when I was holding it up installing it on the hangers! I wanted quiet, but the least back-pressure that I could get.
I'm going to start my new exhaust this weekend on the 84 6.9 T18 4wd, got 3" for it. My plan is to run a straight exhaust (no muffler). I'm going to cut the Y-pipe about 6" past the 2 header pipes tansition connection in the Y. Fab a transition from the 2.5" Y into the 3". I've got some 1/8" x 1" flat stock I'll use for hangers. I'll exit with a 90 degree bend to about a foot in front of the passenger side rear well. I don't want to fiddle with going over the rear end and out behind the wheel because it's a plow truck. Backing into snow banks play havoc with the stock tailpipe position. I have one question though:
Does it make any difference if I insert the 2.5" three or four inches into the 3" or should I keep the it as close as I can to the start of the 3" pipe? Any ideas would be appreciated.
Thanks
Tim
Flowmaster makes some nice Y adapters that would really make it alot easier. I think they are called Force 2 Y collectors. You could also just dump it just before the axle and keep it up inside the frame rails.
Thanks 351M for the info. The problem is I'm up here in Alaska and by the time you order it on the internet and pay for the shipping up here it's not cost effective. And it might take 10 days to get here?
I don't want to point it down in front of the axle because when backing up if you backover something that hits the turndown pipe you'll bend everthing up. If it exits the side in front of the tire and you backover something it will slide along it like a skid plate. Also the back tire will hit any obstruction when backing up before anything hits the tip of the pipe.
Flowmaster makes some nice Y adapters that would really make it alot easier. I think they are called Force 2 Y collectors. You could also just dump it just before the axle and keep it up inside the frame rails.
im pretty sure thats what mine has cause mine goes into a single pipe right at the axle.