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#1 |
Registered User
Join Date: Jul 2019
Location: Beebe, AR
Posts: 2,459
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Exhaust systems
Anybody buy a kit and do their own? I am starting to plan ahead past brakes, steering, and suspension. Exhaust is on the list. Right now I have a 2 into 1 with the muffler open right before the rear diff.
I'm torn on duals dumping right after the rear diff or taking both all the way to the rear. If I go to the rear I want to do something with both out one side. I don't want to go the normal two out the back route. Photos of various systems would be appreciated. Step sides even better.
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1967 C10 1980 Jeep CJ5 2020 Toyota 4Runner 2024 Toyota Tundra |
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#2 |
Registered User
Join Date: Jul 2015
Location: Sedalia Mo.
Posts: 1,131
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Re: Exhaust systems
I can't help you with a kit, but I can tell you that my 85 K20 had headers and dual pipes with mufflers (thrush) that dumped under the bed right before the diff and it turned my bed into a speaker and vibrated horribly at the back glass. I had the pipes extended out the back and that helped tremendously. Whatever you do, take the tips out past the bed somewhere.
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He who is without oil shall throw the first rod. Compressions 8.7:1 1972 C10 1976 C10 (parts truck) 1985 K20 |
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#3 |
Registered User
Join Date: Jan 2007
Location: Mississippi
Posts: 2,121
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Re: Exhaust systems
Usually build our own. About to do another one next week & ordered this tube kit yesterday. Looks like it should cover everything (buying bend pieces separately gets expensive quick) https://www.summitracing.com/parts/sum-670146, we'll see when it gets here.
I have learned on these trucks that turn downs dumping before rear differential & sliding back glass will about choke you to death.
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'72 C to K20 "Cannibalizer" http://67-72chevytrucks.com/vboard/s...32#post8653432 '85 K30 "Big Nassy" '01 2500 Suburban ...party wagon & tow truck '06 Silverado SS...DD '06 C1500 WT...DD '07 Classic C1500 WT...DD Built & sold cause can't keep 'em all: '72 Blazer "The Bucket" http://67-72chevytrucks.com/vboard/s...d.php?t=433190 '55 Chevy straight axle gasser https://www.trifive.com/forums/showthread.php?t=173938 '69 Pro Street Chevelle http://www.chevelles.com/forums/showthread.php?t=332541 '86 M1031 CUCV http://67-72chevytrucks.com/vboard/s...d.php?t=553619 |
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#4 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,282
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Re: Exhaust systems
I bought a Pypes 2.5 SS header back kit and modified it so I could tuck the exhaust between the frame rails. I have electric cutouts mounted under the tubular transmission mount and Thrush turbo mufflers mounted just behind the crossmember that the driveshaft passes through, and the tips exit behind the rear tires. It's pretty quiet in the cab unless the cutouts are open, but outside it's fairly loud, even with them shut.
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear Last edited by 70STOVEBOLT; 02-22-2023 at 01:11 PM. |
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#5 |
Registered User
Join Date: Jan 2007
Location: Puyallup, WA
Posts: 1,662
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Re: Exhaust systems
Several companies make exhaust kits for these trucks. Off the top of my head there's Magnaflow, Thrush, Heartthrob, Pypes, Flowmaster, and Hooker.
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72 C10 lwb fleetside -stock 350/350 combo |
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#6 |
Senior Member
![]() Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,365
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Re: Exhaust systems
I have Spintech Mufflers ... they have a nice deep sound.
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A husband can be right...or...A husband can be happy. ![]() 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. ![]() 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc ![]() ![]() JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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#7 |
Registered User
Join Date: Jul 2019
Location: Beebe, AR
Posts: 2,459
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Re: Exhaust systems
In particular, I am looking for something that will mate up to the stock rams horn style exhaust manifolds. I want a rumble but don't care to shake windows and scare small children. I'll start poking around some.
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1967 C10 1980 Jeep CJ5 2020 Toyota 4Runner 2024 Toyota Tundra |
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#8 |
Registered User
Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,218
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Re: Exhaust systems
I see lmc has a magnaflo kit for 67 72 trucks
I ran magnaflo on my last camaro nice tone and was a true bolt in affair |
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#9 |
Senior Member
![]() Join Date: May 2017
Location: Dowagiac Michigan
Posts: 202
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Re: Exhaust systems
I am using the Heartthrob 2 1/4 system with hush thrush mufflers on my 67 K20
Have it 3/4 installed right now Fits very well Nice tone but can hear the radio |
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#10 |
Registered User
![]() Join Date: Mar 2005
Location: Jurupa Valley, Ca
Posts: 1,210
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Re: Exhaust systems
Is this a running truck? If so you may want to consider cost of the "kit" vs having a shop build one for you. I had a 2 1/2" dual system with a crossover and dynomax mufflers and chrome tips exiting out the rear done recently. No headers, using the stock ram manifolds. It cost me $650.
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Terry 1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC |
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#11 |
Registered User
Join Date: Nov 2014
Location: Yukon, Oklahoma
Posts: 35
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I did my own exhaust. I bought a flow master ufit 3” stainless steel exhaust kit and magnaflow mufflers. I ran it all the way out the back and tucked them up behind the bumper and pointed them down so the tips aren’t really visible from the back. It was really nice kit made it pretty easy to install and had pieces leftover.
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#12 |
Senior Member
![]() Join Date: Jul 2015
Location: Fairfax, Missouri
Posts: 1,049
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Re: Exhaust systems
For what the kits cost I'd talk to a exhaust shop and have them do it. You could order your mufflers but make sure you get the inlet and outlet in the the right position. My buddy ordered a high dollar kit for his monte carlo with a cross over system and we had nothing but troubles with it. Ended up taking it to a shop and having a couple of the pipes bent a little more so it would fit the way he wanted. Make sure it's the last thing you do if your changing rims,tires , suspension ect.
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#13 |
Registered User
Join Date: Jun 2002
Location: Tucson AZ by way of WI & CA
Posts: 509
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Re: Exhaust systems
Bought the kit from LMC cause I needed a solution quickly. Easy to install, but was not happy with bends and look. Went to local shop and they tweaked it up for under $200. All in under $500. I see a few shops in your area like Pro Muffler and Exhaust, which does have a picture of a 67-72 in their gallery, so pretty sure you could get the system you want within your budget, especially if you provide a few of the bits. Also check out youtube if you want to get a rough idea of the sound.
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#14 |
Registered User
Join Date: Jun 2012
Location: Portland
Posts: 1,330
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Re: Exhaust systems
Excuse the crappy photobucket watermark, I need to offload my old photos from that crappy site.
I did a custom dual setup on my 66. Ran them through the crossmember: ![]() ![]() ![]() Then did a tailpipe that wrapped around the fuel tank. It was dual rears, but more centrally located. ![]() ![]() Best of luck! |
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#15 |
Registered User
Join Date: Dec 2006
Location: Glenpool OK
Posts: 255
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Re: Exhaust systems
Just had mine done after my short bed conversion. I considered doing it myself with a kit but a local shop quoted me $500 with mufflers so I went that route. Figured the price of a kit plus mufflers plus down pipes for the stock manifolds I wasn't saving much money doing it myself.
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#16 | |
New Member
![]() Join Date: Jul 2018
Location: Honolulu Hawaii
Posts: 13
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Re: Exhaust systems
Quote:
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