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View Full Version : 2000 Dodge Cummins needs muffler


Stonewall
05-08-2007, 10:10 PM
I bought this truck used a couple of years ago with a straight exhaust and it sounds like a Mack truck. My kids call it the "thunder truck." I'm ready to quiet it down, but a local muffler shop said that the only muffler he could get to put on it would not quiet it down much. Anybody know if that's true? Do I have any other options?

dozerman21
05-08-2007, 10:37 PM
Any muffler will quiet it down compared to how loud it is straight piped. There are a bunch of different companies who make mufflers that are louder than stock, but not as loud as no muffler. I assume it's a 4" pipe? Banks, Dynomax, Flowmaster, MBRP, etc... all make them. If it's a 5" pipe you may need some adapters too.

stangman35
05-08-2007, 11:40 PM
Try a parts store,like NAPA or something.Ask for a stock muffler for your truck.Should be pretty easy to find.Unless the truck has larger than stock straight pipe might have to have some adaptors to make it fit.

IA_James
05-09-2007, 12:28 AM
There should be room under the truck for a stock semi muffler. Donaldson or Nelson being the main two. You should have 3.5" pipe, they make 'em in that size, and if it's and "oversize" exhaust, it's no biggy, they make bigger. Plus they are alot cheaper.

Stonewall
05-09-2007, 07:10 AM
Thanks. I'll check around.

TGM
05-09-2007, 09:31 PM
a stock 2000 exhaust is 3" OD except in between the resonator and muffler (originally of course). put a flow-through muffler on it to keep some of the sound, but quiet it down (especially in the cab).

Pro-Scapes
06-03-2007, 11:22 PM
Jonathan of all the times I have met with you I have never noticed your Dodge was loud :)

mag360
06-04-2007, 10:04 AM
A muffler will quiet down the exhaust. Consider having the valves adjusted to spec if you are anywhere near or over 100,000 miles. That will quiet down the motor some, and make it run better.

lawnmaniac883
06-04-2007, 12:44 PM
Donaldson 51'' muffler gets my vote

Stonewall
06-19-2007, 10:52 PM
Billy,

If only you knew. Maybe if you turned your music down some.

Thanks for all the suggestions.

The truck has over 240k on it, but I haven't put but 30k on it and don't know if/when the valves were adjusted. I just dropped over a grand on getting a cracked fuel line replaced that contributed to hard starting (not sure it's completely fixed). How much for the valve job?

IA_James
06-19-2007, 11:00 PM
Billy,

If only you knew. Maybe if you turned your music down some.

Thanks for all the suggestions.

The truck has over 240k on it, but I haven't put but 30k on it and don't know if/when the valves were adjusted. I just dropped over a grand on getting a cracked fuel line replaced that contributed to hard starting (not sure it's completely fixed). How much for the valve job?

Shouldn't be bad, less than $200. Take it to a Cummins shop vs. a Dodge dealer if there is one close, they won't give the anal probe like a car dealer will. They'll also probably have the muffler you need.

TGM
06-19-2007, 11:41 PM
Billy,

If only you knew. Maybe if you turned your music down some.

Thanks for all the suggestions.

The truck has over 240k on it, but I haven't put but 30k on it and don't know if/when the valves were adjusted. I just dropped over a grand on getting a cracked fuel line replaced that contributed to hard starting (not sure it's completely fixed). How much for the valve job?

yikes, a new lift pump and big fuel line fuel kit (tank to the vp44) would be a lot cheaper than a grand.


http://cgi.ebay.com/ebaymotors/3-ALUMINIZED-GLASSPACK-MUFFLER-18-GA-GLASS-PACK-LOUD_W0QQitemZ160128590272QQihZ006QQcategoryZ33636QQrdZ1QQcmdZViewItem --if you want to quiet it down in the cab and take off a little noise on the outside.

http://cgi.ebay.com/ebaymotors/Borla-XR-1-Muffler-3-in-and-out-round_W0QQitemZ200119454095QQihZ010QQcategoryZ33636QQssPageNameZWDVWQQrdZ1QQcmdZViewItem -a bit quieter (will sound stock within the cab but have some noise on the outside)

Snowman269
06-22-2007, 10:16 AM
Go to your Napa store & get a Walker BTM (Big Truck Muffler) They have 3" straight through, 3.5" straight through. Very affordable & will make a noticable difference.