The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-19-2006, 08:35 PM   #1
muddpile
Registered User
 
muddpile's Avatar
 
Join Date: Dec 2004
Location: Saskatchewan, Canada
Posts: 1,371
Muffler location?

I am still thinking about making my exhaust exit just in front of the rear wheels, angling outwards with the tips just outside the body like an AAR cuda. I am wondering a couple of things before I do this, however:
-Where in the system do I put the mufflers?
-Will this harm my tires or paint?
-If I use flowmasters, will it be really loud inside the truck?

Here's a pic of what I'm thinking, on a car, but same idea.

muddpile is offline   Reply With Quote
Old 04-19-2006, 08:45 PM   #2
pound41
Registered User
 
Join Date: Dec 2002
Location: Northern Virginia
Posts: 1,268
Re: Muffler location?

This is going back a while but on one of my 72 blazer I had a 327/365 in my blazer with high compression anyway the old straight thrush shooting right out infront of the wheels. I cannot remember exactly but it obviously starts with the tailpipes. But if I remember correctly the tailpipes weren't a straight 45 out they went for a few inches then turned and came back. Like a Check Mark. Anyway with the motor I had in it it was extremely LOUD In the cab even with the window down at a light. When I sold it my freind put a much milder motor in it. It will be Loud
pound41 is offline   Reply With Quote
Old 04-19-2006, 09:37 PM   #3
Longhorn Man
its all about the +6 inches
 
Longhorn Man's Avatar
 
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
Re: Muffler location?

I have never...EVER said this about a friggen Cordoba... but that thing looks friggen good!
Longhorn Man is offline   Reply With Quote
Old 04-19-2006, 09:46 PM   #4
LUV2XCLR8
The LuvShack Garage
 
LUV2XCLR8's Avatar
 
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,468
Re: Muffler location?

Well except for the angle of the tips and the flows, that is almost
a exact description of my exhaust system, see "PICS" link in siggy
__________________
Owner/Op: "TN Classic Transport Carriers"
The Toy: "Square Vette" 72 Hybrid Blazer
Toy Barn: "LuvShack" 40 x 60 x 20 Shop
Tow Piggy:"Maddy" 88 Silverado 3500
Hauler: "Feathers" 14 Aluma 8218T

Last edited by LUV2XCLR8; 04-19-2006 at 09:46 PM.
LUV2XCLR8 is offline   Reply With Quote
Old 04-20-2006, 02:16 AM   #5
muddpile
Registered User
 
muddpile's Avatar
 
Join Date: Dec 2004
Location: Saskatchewan, Canada
Posts: 1,371
Re: Muffler location?

LUV2XCLR8, that comes out between the doors and the rear wheels correct? If so, how loud is it around town/on the highway? Is it tolerable, or would I be better off routing it right to the back? Thanks!
muddpile is offline   Reply With Quote
Old 04-20-2006, 10:05 AM   #6
Longhorn Man
its all about the +6 inches
 
Longhorn Man's Avatar
 
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
Re: Muffler location?

I had my old truck routed like that, it was loud..but tolorible. It was defenatly quiter than pipes ending under the bed.
Longhorn Man is offline   Reply With Quote
Old 04-20-2006, 10:40 AM   #7
BowTieMan
Registered User
 
BowTieMan's Avatar
 
Join Date: Dec 2003
Location: Glendale Arizona
Posts: 747
Re: Muffler location?

Here is how I have it on mine. I have cut the tail pipe down since this picture. Its not too loud unless I really want it to be. Then it screams
Attached Images
  
__________________
"A true hotrodder wouldn't be content untill he had created a car so violent, so hairy, so totally sick that the very act of dropping the hammer would result in instant death. Anything less results in the need to go faster." - Tony DeFeo
BowTieMan is offline   Reply With Quote
Old 04-20-2006, 11:05 AM   #8
cwilli84
1FINE69
 
cwilli84's Avatar
 
Join Date: Aug 2003
Location: Detroit, Michigan
Posts: 239
Talking Re: Muffler location?

Mine goes all the way back out to the bumper and it is still pretty loud even with mufflers. Not sure what they are but everyone complements how they sound.
__________________
Had a 69 swb fleetside 350zz3 w 400turbo trans oak lined bed with rhino coated sides red exterior. SOLD
cwilli84 is offline   Reply With Quote
Old 04-20-2006, 11:35 AM   #9
SB406
FORD is a 4 letter word.
 
SB406's Avatar
 
Join Date: Feb 2006
Location: Western NY
Posts: 99
Re: Muffler location?

How loud the exhaust is is a function of A)what mufflers you have. B)Your Motor. and C) how much tailpipe you have after the muffler.

By the way, a guy here at work has an old AAR cuda and the mufflers are a little unique.....the exhaust entry and exit are right next to each other. Exhaust goes in, makes a 180 and exits on the same end. Out of the muffler, the pipe makes a quick turn toward the outside of the car behind the door. The mufflers are located just ahead of the rear axle (where the back seat forms a rise in the floor).

Anyway, remember that there's a difference between noise and sound. Sound=healthy V8 w/a nice cam.
Noise=Honda civic w/ fart-can mufflers.
__________________
'71 406 GMC Short Box Fleetside - Daily Driver
'79 350 Chevy K-5 Blazer - On-going Project (Mudder)www.wnyoffroad.com
'58 LT1 Chevy Short Box Step Side - Next Project
SB406 is offline   Reply With Quote
Old 04-20-2006, 02:19 PM   #10
Bob D
Rolled on Paint Club
 
Bob D's Avatar
 
Join Date: Jan 2006
Location: Windham, CT.
Posts: 232
Re: Muffler location?

My exhaust looks a lot like BowTieMans, straight from headers to crossover to turbos, and then angle out to exit before the rear wheels. It is all 1 welded unit that can be removed in one piece. In the pic below, I have the ends cut off because they were big 3" glasspacked chrome tips that rusted. The bent angles are different because they were scrounged pipe from another system. The crossover fits in the recess under the tranny crossmember. Also, the inputs from the headders are not equal legnth because the headders werent

Bob
Attached Images
 
__________________
1970 GMC 1500 swb fleetside
SB 355ci.
Smog heads
Summit 1102 cam
Performer intake and carb.
Finally in about 1 piece in the yard.
Bob D is offline   Reply With Quote
Old 04-20-2006, 03:50 PM   #11
LUV2XCLR8
The LuvShack Garage
 
LUV2XCLR8's Avatar
 
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,468
Re: Muffler location?

Quote:
Originally Posted by muddpile
LUV2XCLR8, that comes out between the doors and the rear wheels correct? If so, how loud is it around town/on the highway? Is it tolerable, or would I be better off routing it right to the back? Thanks!
I luv it, it is a lil rowdy, but heh I'm driving a convertable
I have a 450 Hp 350 and Magnaflows, I can send you a audio
clip if you PM me your E-mail addy, It's not to loud for me
__________________
Owner/Op: "TN Classic Transport Carriers"
The Toy: "Square Vette" 72 Hybrid Blazer
Toy Barn: "LuvShack" 40 x 60 x 20 Shop
Tow Piggy:"Maddy" 88 Silverado 3500
Hauler: "Feathers" 14 Aluma 8218T
LUV2XCLR8 is offline   Reply With Quote
Old 04-20-2006, 06:34 PM   #12
Robert1970C20rstbukt
Registered User
 
Robert1970C20rstbukt's Avatar
 
Join Date: Jun 2004
Location: Beeville, Texas
Posts: 1,943
Re: Muffler location?

I have basically the same setup on my truck with 18" glasspacks. About 1ft of 2" pipe comes off the ramhorns, then 2 1/4" was welded to that. The glasspacks are at the very end of the system with 2 1/4" turndowns. They don't stick out the side of the bed though, the turndowns exit right under the front of the bed and are turned to the side. It's really loud, I set off car alarms all the time when I drive it down town. All those buildings make the loud rrrrrraaaaaaaappppppppp sound echo, it draws a lot of attention. Some guys don't like loud exhausts but I do!
__________________
RJD

1984 Chevrolet C30 welding truck 454/SM465
1977 GMC C15 pickup 350/TH350
1970 Chevrolet C20 pickup 350/TH400
1970 Chevrolet K20 Suburban 454/TH350
1969 GMC 8500 478M V6/5 spd winch truck
Robert1970C20rstbukt is offline   Reply With Quote
Old 04-20-2006, 10:51 PM   #13
72MARIO
Registered User
 
72MARIO's Avatar
 
Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,051
Re: Muffler location?

I have Super 40's 3" dual manderal bent with a 2 1/2" H pipe. Mufflers are right behind the trailing arm crossmember (it's a leaf truck) 90 out in front of the wheel. It's actually not loud inside the truck if you keep it under 3000 rpm. I can hardly hear it with the windows up. It is loud out side. But I am happy with the sound of the system.
__________________
1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair
http://67-72chevytrucks.com/vboard/s...d.php?t=625017
1967 C/20 6.0/4L80 Roofing Truck
1990 V2500 Suburban "Plow Truck"
2005 TAHOE DD
72MARIO is offline   Reply With Quote
Old 04-21-2006, 12:46 AM   #14
muddpile
Registered User
 
muddpile's Avatar
 
Join Date: Dec 2004
Location: Saskatchewan, Canada
Posts: 1,371
Re: Muffler location?

Thanks guys! Last question, has anyone had any problems with it screwing up their paint or tires? I'm worried about the heat more than the soot, but am hoping I should be OK.
muddpile is offline   Reply With Quote
Old 04-21-2006, 08:33 AM   #15
72MARIO
Registered User
 
72MARIO's Avatar
 
Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,051
Re: Muffler location?

it gets a little dirty but the truck will need a wash by the time the exhaust ever make that big of a mess.
__________________
1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair
http://67-72chevytrucks.com/vboard/s...d.php?t=625017
1967 C/20 6.0/4L80 Roofing Truck
1990 V2500 Suburban "Plow Truck"
2005 TAHOE DD
72MARIO is offline   Reply With Quote
Old 04-21-2006, 10:05 AM   #16
kaycee
Registered User
 
kaycee's Avatar
 
Join Date: Jan 2000
Location: Wyoming USA
Posts: 2,449
Re: Muffler location?

Attached Images
  
__________________
2001 Silverado K-1500
2005 FXDWG stage3
69 CHEVY Short/Step 327/4L60 373 posi
63 IMPALA 327
kaycee is offline   Reply With Quote
Old 04-21-2006, 10:16 AM   #17
67ChevyRedneck
Hittin E-Z Street on Mud Tires
 
67ChevyRedneck's Avatar
 
Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
Re: Muffler location?

Quote:
Originally Posted by muddpile
Thanks guys! Last question, has anyone had any problems with it screwing up their paint or tires? I'm worried about the heat more than the soot, but am hoping I should be OK.
I'd be more concerned about exhaust fumes coming into the cab with the window down at stoplights. If your truck is to be a daily driver with the windows down I'd consider that.

I hate to be a but to me the only place for the exhaust is out the back.
__________________
Jesse James
1967 C10 SWB Stepside: 350/700R4/3.73
1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc
1968 Pontiac Firebird: Project Fire Chicken!
2015 Silverado Double Cab 5.3L Z71
2001 Jeep Wrangler Sport 4.0L 5spd
2020 Chevrolet Equinox Premium 2.0L Turbo
2011 Mustang V6 ~ Wife's ride
American Born, Country by the Grace of God
1967 CST Shop Truck Rebuild!
My 1967 C-10 Build Thread
My Vintage Air A/C Install
Project "On a Dime"
Trying my hand at Home Renovation!
1965 Mustang Modifications!
67ChevyRedneck is offline   Reply With Quote
Old 04-21-2006, 11:29 AM   #18
SB406
FORD is a 4 letter word.
 
SB406's Avatar
 
Join Date: Feb 2006
Location: Western NY
Posts: 99
Re: Muffler location?


Mine go all the way out the back. The pipes are tucked up there pretty well. I set it up so that from the rear, you can just see the last 1/4" of the pipe below the bumper. You don't even notice em unless you're behind the truck in a dusty parking lot. Then you see a really cool cloud of dust getting puffed up from the 2 spouts.
Attached Images
  
__________________
'71 406 GMC Short Box Fleetside - Daily Driver
'79 350 Chevy K-5 Blazer - On-going Project (Mudder)www.wnyoffroad.com
'58 LT1 Chevy Short Box Step Side - Next Project

Last edited by SB406; 04-21-2006 at 11:37 AM.
SB406 is offline   Reply With Quote
Old 04-21-2006, 12:13 PM   #19
72MARIO
Registered User
 
72MARIO's Avatar
 
Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,051
Re: Muffler location?

Try doing that with 3" tube and a 6" rear drop. That would be fun !
__________________
1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair
http://67-72chevytrucks.com/vboard/s...d.php?t=625017
1967 C/20 6.0/4L80 Roofing Truck
1990 V2500 Suburban "Plow Truck"
2005 TAHOE DD
72MARIO is offline   Reply With Quote
Old 04-21-2006, 01:28 PM   #20
jsbgump
Gone Fishing
 
jsbgump's Avatar
 
Join Date: Aug 2005
Location: Fort Worth, Texas 76135
Posts: 12,361
Re: Muffler location?

I have mine dumped in front of the rear axle
__________________
68 Chevy Short Fleetside LSX Swap Under Way 3.73 posi 2.5/4 drop Frame of resto has been started
2022 Hyundai Tucson Limited
2019 Chevy Traverse Redline Edition Wifes Ride
Build Thread

http://67-72chevytrucks.com/vboard/s...=1#post3483616
jsbgump is offline   Reply With Quote
Old 04-21-2006, 01:43 PM   #21
SB406
FORD is a 4 letter word.
 
SB406's Avatar
 
Join Date: Feb 2006
Location: Western NY
Posts: 99
Re: Muffler location?

Quote:
Try doing that with 3" tube and a 6" rear drop. That would be fun !
Today 11:29 AM
True....True.
Has anybody on here done smoke stacks? I considered it under the assumption that I would put flame throwers in em.
__________________
'71 406 GMC Short Box Fleetside - Daily Driver
'79 350 Chevy K-5 Blazer - On-going Project (Mudder)www.wnyoffroad.com
'58 LT1 Chevy Short Box Step Side - Next Project
SB406 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:09 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com