[Dually Diva]

Bought a chrome tip 4 inch for my dually nice big one , and later found out my exhaust was only a 3 1/2 inc pipe , wich my husband's dodge dually has a 4inch , is most chevy's 3 1/2 ??
the more i look the 3 1/2 just dont look tough enough for such a tough truck

 

[jepear15]

If you don't like your 3 1/2'' pipe I have a 5'' with a 6'' tip in my garage. I love the look and the sound. But I do think that is standard. At least on the Duallies, mine was 3 1/2''.

 

[nextlevel38]

time for a new exhaust system

 

[rolloffhill]

All of the stock exhaust's on duramax trucks are 3 1/2", but most put on an 4" or 5" aftermarket exhaust with a tip.

If you don't go with an A/M exhaust you could still use your tip with something like this. IMO I would go with an aftermarket exhaust, but that is your call.


http://www.speedwaymotors.com/p/3537,,_Exhaust-Reducers.html

 

[Dually Diva]

thanks for the " tip " < he he
for now i may have the 3 1/2 inch modified at end to fit 4in chrome tip .
but its tempting to go with the 5 , do to added sound , my dually is kinda quiet ....... compared to others ive heard . also my turbo is quiet unless in tow .

 

[bcserl]

I put an after market catback 5" chrome tip and intake from AFE and my truck is still quiet. I slight increase in turbo whine and a little more throaty exhaust tone when you get on it.

 

[Rosey]

I just put on a "Gibson" 3 1/2" to 4" stainless 12" long "downturn" tip on my new Dually and it is sharp! Cost about 60 bucks but is worth the money. Just do a search on "Gibson" and their web site will give you some online stores carrying it. Remember 3 1/2 to 4 inch! length 12 inches...fits like a glove.

 

[Lock]

Just a thought: I bought a 3.5" to 4.5" tip from Summit to fit on my stock exhaust a couple years back, and the stock exhaust is just a tad bit bigger than 3.5" on the OD. Had to cut the tip down to where it flared out to the 4.5" to make it fit over the stock exhaust and weld it in place. The muffler guy told me it was likely 3.5" ID.

For what I spent on that tip, the install, and the flowmaster muffler, I could have just bought an aluminized MBRP 4" system (which I am currently running).

 

[Dually Diva]

gonna go with that adapter peice rolloffhill sent me !!!
stopped at a local parts store and they said dont have and good luck finding local,so internet it's is

 

[rolloffhill]

Like lock said, I'm not sure what the ID and OD of the stock system is, so you may want to measure it and your tip before you order anything. If you can't find anything dead on, you maybe able to get that one I posted earlier and take it somewhere to me expanded if needed.

Here is another one that has a measurement of 3.5 on the ID, http://www.sixstates.com/partlocations/partlocations.jsp?part=41894&supplier=WK

Here is one with a OD of 3.5 http://www.sixstates.com/partlocations/partlocations.jsp?part=41984&supplier=WK

More than likely you will want to have it welded on rather than clamped. Is your tip a clamp on or weld on?

 

[STPETEBLUE]

I found a 3.5" to 5" tip on eBay (pic in garage). I may go to a 4" system when I wear this one out (haha). Until then I'll settle for the look only.

 

[Dually Diva]

I'll settle for the look only.
__________________
witht the look 4 now .............. he ,he

 

[carcrafter22]

I just used an adapter like shown earlier the adapter was just a 3.5" ID on one end and 4"OD on the other I picked it up at a local independant autoparts store he had it in the back.