Jump to content

Cut Off Muffler How To Make Side Exit

Snow White

Recommended Posts

Snow White Enthusiast

Snow White

Posted
Posted

I want to get a 3" pipe bent so that it replaces the muffler and exits 3" forward of the front leaf spring bolt/shackle

 

Where do I get a 4' section of 3" aluminized pipe and get it bent at 30 degrees?

 

taking other suggestions on how to do this also, I'm taking out the exhaust from some point forward of the muffler completely back to the stock tip and want to replace with a sort of side swept 3" pipe. I understand this portion of the plumbing is 3".

 

it's a custom deal.

thanks!

Nytemare Senior Enthusiast

Nytemare

Posted
Posted

A local muffler shop.

That's probably the cheapest and easiest place to get some. A good custom shop will be able to sell it to you and bend it for you on a mandrel bender.

Snow White Enthusiast

Snow White

Posted
  • Author
Posted

one local guy say less than $100... seriously, for a hundred bucks I'll figure something else out on my own. I'll try some other muffler shops to see what they say.

Nytemare Senior Enthusiast

Nytemare

Posted
Posted
one local guy say less than $100... seriously, for a hundred bucks I'll figure something else out on my own. I'll try some other muffler shops to see what they say.

3"OD Exhaust pipe (aluminized) is 18 bucks for a 4 ft section on Jegs.

 

with bending you should be in it for around 50 or less...depending on shop rates.

 

just under 100 would be the price for Stainless.

Snow White Enthusiast

Snow White

Posted
  • Author
Posted
one local guy say less than $100... seriously, for a hundred bucks I'll figure something else out on my own. I'll try some other muffler shops to see what they say.

3"OD Exhaust pipe (aluminized) is 18 bucks for a 4 ft section on Jegs.

 

with bending you should be in it for around 50 or less...depending on shop rates.

 

just under 100 would be the price for Stainless.

 

 

this is going to be a little more tricky than i thought. i didn't realize the frame was so low. i know i want it to come at an angle from about where the muffler strap is out underneath the sloped part of the frame so the bottom of the pipe will be no lower than a straight extension of the bottom of the frame, this happens to be just far enough from the leaf spring bolt that it won't bother the leaf bushing. the issue is there are 3 angles, 1 compound angle down/away from the ex. pipe at muffler then the angle out towards the side of the body once under the frame itself.

 

I can do it, but it doesn't help trying to save that hanger right in front of the muffler, that i think will be the thing causing me to get the work done at a shop, too many constraints to work with standard 45/90/120 bends.

 

thoughts?

Snow White Enthusiast

Snow White

Posted
  • Author
Posted

well, i cut off the muffler about 1" left in front of muffler, just enough to add more pipe later, but for now it's a turn down... pretty loud, but impressed actually. there's zero backfire no rumbling and all that. Really, it's smooth as silk off the gas and dead quiet. I'll tell you one thing though, 1800-2500 rpms it shakes the floor boards!!! lol

 

i really like it, but the 4 cylinder mode i have to get used to or get rid of. i'm just a little afraid of losing some mileage and the cost of black bear and warranty and all that.

Archived

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

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.3k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,717
    Total Members
    8,960
    Most Online
    Tiffanyrose
    Newest Member
    Tiffanyrose
    Joined

  • Who's Online   2 Members, 1 Anonymous, 954 Guests (See full list)

  • Latest Articles

  • Posts

    • Newduramaxh*ar
      DTC P2C48 auxiliary cooling pump

      By Newduramaxh*ar · Posted

      I tried tapping it.  This might sound like a dumb question, you should feel vibration or some type of noise when it turns on? Can someone please verify? Thank you all!
    • Chuck FB
      first oil change - 2026 2500HD gas

      By Chuck FB · Posted

      I feel better now for my own view point and actions or lack there of towards the dealership service theme reading your post and others. GM corporate is who offers the two free oil changes on the HD trucks and I bought my truck in Feb of 2025 and those oil change offers run out within 2 years I believe and I highly doubt I will be using either one of them. I had asked if I could officially give those free services to another customer ( a friend ) and they said no, its all a GM corporate thing based on the vehicle in question. What that service advisor did however was go into a little story about how such and such customer was denied engine warranty because he had done his own oil changes because then they are not documented ... you see where that goes and so an employee playing the game of scaring the customer into having the service work done there most certainly triggered my thought process. At a later date I did talk to the person who handles warranty claims at the dealership and she said to be sure to document the oil changes and keep receipts for the oil and filter ( coped the receipts from cases of Mobil oil and case of filters I bought from them ) and the vehicles VIN, the date of service, mileage etc and staple that together as a record I would give them if that was ever needed and I keep my own log book for services for each vehicle as well. Oh and about 8 months after I bought the truck the dealer starts calling me to offer a maintenance service since they haven't seen my vehicle show up on their system ... for the mere fee of 300.00 Canadian to change the oil and rotate the tires and a few other minor checks and I declined the offer, I get the call again a couple of months later for the same thing and she could tell I was not interested and she asked if they should take my name off the call list and I said yes, do that !.    By the way did you happen to keep your factory oil filter to open it up and see the surprises inside as I expect some will show up as per the odd little sliver of metal shaving and particles that the filter does trap along with bits of grey silicone sealer that come off of the inside edge of mating surfaces. I have cut open every filter so far on my truck although few miles but have changed the oil often and the second filter was vastly better with very little of anything, that first filter was the unsettling one as I expected it would be. 
    • OnTheReel
      OCI, not when but why?

      By OnTheReel · Posted

      I get why they do this…but man…not ideal. I only extract on inboard boat engines because the drains are buried and even then I hate it because it’s easy to leave a quart behind with that method.   They should market it as an “oil refresh” not oil change!
    • KARNUT
      OCI, not when but why?

      By KARNUT · Posted

      I only get oil changed where I can watch. Valvoline pulls through the dipstick into a see thru glass. When done they show me the dipstick. About the only way they can mess up is using the wrong oil. But that secret wouldn’t stay secret long. Honda uses TQ wrenches on everything. You can watch through a plate glass window. Discount tires does that with tires. Trust but verify. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      I would not argue that with you. It would be pointless to argue against the truth and you speak the truth.    My question and in fact the entire point of this thread is an exploration into the levers of wear which happens no matter how well we maintain our powertrains.    Some of these levers we exert a good deal of influence over which can and do result is lower wear, longer powertrain life. Some others we are sort of stuck with.    An engine is typically done when the ring to bore seal no longer is able to do the job effectively. Normally the first thing to go in a engine otherwise well maintained and adult driven is this seal.    Looking into the means, methods, products and attitudes that influence the rate of wear seems a worthwhile inquiry to me.     

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...