Jump to content

Muffler Swap only question


Recommended Posts

Interested right now in just swapping out the muffler on my 5.3, which I believe is 2.75" OD?

 

For the process, just take the old system out, lay the new muffler over the existing one and mark where to cut the factory pipe, then get some lap joint clamps and clamp it up if I'm not welding it?

 

I was looking at getting the Borla 40359, which is center in/offset out and 3" OD. Will the factory pipe fit inside or would I still do a butt joint?

 

Is it that simple or am I going to run into issues with the different lengths of the two mufflers?

Link to comment
Share on other sites

Interested right now in just swapping out the muffler on my 5.3, which I believe is 2.75" OD?

 

For the process, just take the old system out, lay the new muffler over the existing one and mark where to cut the factory pipe, then get some lap joint clamps and clamp it up if I'm not welding it?

 

I was looking at getting the Borla 40359, which is center in/offset out and 3" OD. Will the factory pipe fit inside or would I still do a butt joint?

 

Is it that simple or am I going to run into issues with the different lengths of the two mufflers?

 

You'll want to have it welded, as the 2.75 to 3" is a gap. They''ll probably take a 2.75 and expand it to fill the gap.

Link to comment
Share on other sites

 

You'll want to have it welded, as the 2.75 to 3" is a gap. They''ll probably take a 2.75 and expand it to fill the gap.

ok, makes sense. i think i was hoping the factory pipe would slide into the borla pipe with no gaps and i could get away with using a clamp.

 

guess i'll start looking around at muffler shops.

Link to comment
Share on other sites

What you need is a reducer.

post-172242-0-94044000-1493828753_thumb.jpg

http://www.rockauto.com/en/moreinfo.php?pk=133566&jsn=33&jsn=33

 

Check your local automotive store, or order two online. Just make sure you find the right I.D. vs O.D. dimensions. Or find a muffler with the same size pipe as your truck and skip another joint.

 

I put a muffler on an old truck with clamps and it worked for a while, but I was not happy with it long term. Stuff wiggles loose, rust, etc.

 

If you plan to keep the truck for a while, I would recommend just taking it to a shop that does custom exhaust and have them weld it up for you. its worth the price to save headaches later.

post-172242-0-94044000-1493828753_thumb.jpg

post-172242-0-94044000-1493828753_thumb.jpg

post-172242-0-94044000-1493828753_thumb.jpg

Link to comment
Share on other sites

What you need is a reducer.

attachicon.gif41687__ra_p.jpg

http://www.rockauto.com/en/moreinfo.php?pk=133566&jsn=33&jsn=33

 

Check your local automotive store, or order two online. Just make sure you find the right I.D. vs O.D. dimensions. Or find a muffler with the same size pipe as your truck and skip another joint.

 

I put a muffler on an old truck with clamps and it worked for a while, but I was not happy with it long term. Stuff wiggles loose, rust, etc.

 

If you plan to keep the truck for a while, I would recommend just taking it to a shop that does custom exhaust and have them weld it up for you. its worth the price to save headaches later.

This is good too, but for $50, a shop will cut it out and weld it and you don't have to fart around.

 

Sent from my SM-G930V using Tapatalk

Link to comment
Share on other sites

ok, makes sense. i think i was hoping the factory pipe would slide into the borla pipe with no gaps and i could get away with using a clamp.

 

guess i'll start looking around at muffler shops.

 

Muffler shop will have it done quick and right in no time - took them 20 mins to do mine........ Linked in my sig.........

 

 

post-168136-0-79988200-1493831176_thumb.jpg

 

post-168136-0-78968700-1493831191_thumb.jpg

post-168136-0-79988200-1493831176_thumb.jpg

post-168136-0-78968700-1493831191_thumb.jpg

post-168136-0-79988200-1493831176_thumb.jpg

post-168136-0-78968700-1493831191_thumb.jpg

post-168136-0-79988200-1493831176_thumb.jpg

post-168136-0-78968700-1493831191_thumb.jpg

Link to comment
Share on other sites

Inlet needs to be offset and outlet centered on the muffler IIRC. Exhaust shop should be able to weld up in no time with an extension pipe if muffler is shorter than stock. Just make sure they remove the flapper valve as well.

Link to comment
Share on other sites

Inlet needs to be offset and outlet centered on the muffler IIRC. Exhaust shop should be able to weld up in no time with an extension pipe if muffler is shorter than stock. Just make sure they remove the flapper valve as well.

 

A good muffler shop can adapt - note the Flowmaster 53553 with offset exit fit fine in pics above.

 

 

I was going to leave the flapper to avoid the v4 chopper sound

 

So was I - glad they removed it at least with this muffler - no chopper sound. A lot less restrictive muffler might be a different story for V4 noises. And I would call the Borla 40359 a less restrictive - less noise controlling - smaller size muffler. So probably good to keep the flapper....

Link to comment
Share on other sites

Lgetz, on 03 May 2017 - 2:20 PM, said:

Inlet needs to be offset and outlet centered on the muffler IIRC. Exhaust shop should be able to weld up in no time with an extension pipe if muffler is shorter than stock. Just make sure they remove the flapper valve as well.

 

A good muffler shop can adapt - note the Flowmaster 53553 with offset exit fit fine in pics above.

 

You are right Krusty a good muffler shop will be able to make it work regardless but a less competent one will do a hack job or persuade you into buying something else when things get more involved.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.



×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.