Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
01-05-2016, 01:28 PM | #1 |
Registered User
Join Date: Feb 2007
Location: Acton
Posts: 158
|
Muffler/Exhaust Questions
Years and years into my 67 C10 project and I am finally within sight of seeing my wonderful truck run again since about 10 years.
My newest project and focus is now the exhaust system. The motor has been beefed up and I want a performance minded exhaust system to help that sucker breathe. I have Hooker headers on there and I was thinking like 2.5 inch pipe with some good performance mufflers, maybe like Cherry Bomb glasspacks or magnaflow or whatever. The engine has been bored to I think 388, stroker, racing cam, so its got some muscles. What have some of you guys done to yours? What do you guys suggest?
__________________
1967 C10 Long Bed, Soon to have a 350 1997 Chevy 2500 454 BB |
01-05-2016, 02:13 PM | #2 |
Registered User
Join Date: Jan 2016
Location: Saskatchewan
Posts: 357
|
Re: Muffler/Exhaust Questions
I've always loved the low rumble of 3" strait pipes!
__________________
1972 C10 - It might be old, but it's not slow |
01-05-2016, 02:31 PM | #3 |
Registered User
Join Date: Feb 2015
Location: St. Clair, Missouri
Posts: 124
|
Re: Muffler/Exhaust Questions
Hi,
2 1/2' diameter pipes, true duals, Flowmasters and a bologna-cut exit in front of the rear tires. Sounds awesome. The truck came with Flowmaster "Sportsman" racing mufflers, they were like running open headers....way too loud. Tom
__________________
1972 GMC C1500 350/350 1965 Mustang 2+2 289 4spd, show-car 1965 Mustang Coupe 289 4spd, stoplight racer 1/2 dozen Wheelhorse Tractors |
01-05-2016, 02:44 PM | #4 |
Registered User
Join Date: Feb 2007
Location: Acton
Posts: 158
|
Re: Muffler/Exhaust Questions
I def like the idea of a low rumble. I want some sound but not the get pulled over type sound.
__________________
1967 C10 Long Bed, Soon to have a 350 1997 Chevy 2500 454 BB |
01-05-2016, 07:56 PM | #5 |
Registered User
Join Date: Sep 2003
Location: Victoria,Texas
Posts: 49
|
Re: Muffler/Exhaust Questions
I just bought the Magnaflow complete kit # 16643 for my 67 SWB..
It includes inlet pipes, tru X assy., Mid Pipes, 2 mufflers, 2 tail pipes, all SS and all in one box.. 2.5" all the way out.. Great deal on the internet Sunday, 20% off best price plus free shipping.. Supergas
__________________
Gene 2021 Chevy Silverado CC Custom (DD) 2018 Tahoe LS 1964 Oldsmobile F85 Post |
01-05-2016, 08:20 PM | #6 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,722
|
Re: Muffler/Exhaust Questions
Same thing I've been preaching for 15 years. DynoMax Hemi Turbos. All the flow you could need for 400 whp and no drone or obnoxious noises.
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
01-07-2016, 12:21 AM | #7 | |
Registered User
Join Date: Jul 2010
Location: Oklahoma City, OK
Posts: 28
|
Re: Muffler/Exhaust Questions
Quote:
|
|
01-07-2016, 03:14 PM | #8 |
Registered User
Join Date: Sep 2003
Location: Victoria,Texas
Posts: 49
|
Re: Muffler/Exhaust Questions
It will be a while before I install the exhaust..
But I'll post pics when it is done.. SG
__________________
Gene 2021 Chevy Silverado CC Custom (DD) 2018 Tahoe LS 1964 Oldsmobile F85 Post |
01-07-2016, 03:23 PM | #9 |
Registered User
Join Date: Nov 2014
Location: Austin, TX
Posts: 281
|
Re: Muffler/Exhaust Questions
I'm also planning on a new exhaust for my 72 K2500. Plan on keeping the ram horns. 2 1/2" dual pipes with an H crossover and Flowmaster 40s. Haven't decided on a dump location (front of rear tires, behind rear tires out sides, straight out back). Hoping to do stainless steel complete.
__________________
72 K2500 Sierra Longbed Wideside 350/TH350/NP205 66 Plymouth Barracuda 225 Slant6 |
01-07-2016, 03:43 PM | #10 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
|
Re: Muffler/Exhaust Questions
Let me tell you a story about a truck.
I put together my 84 SWB GMC a long time ago and like you I put on a set of long tube headers and wanted to go dual exhaust. I had installed a 383 stroker engine and wanted to do the exhaust right. I called several sources, being Flowmaster and Magnaflow. The feedback that I got was interesting. They both gave reasons for NOT going to a 3" exhaust, which fit into what size engine and what type of driving that I was going to be doing. (383 stroker engine, 700 R4 tranny, 3.73 gears, and highway driving) The 3" piping would be great, IF I was going to be running a large bore engine (big block) and was going to have a lot RPMs involved. Otherwise the use of 3" piping was detrimental to efficient operation of your engine. You want several things to happen when you have an exhaust system connected to an engine. First, you want the exhaust to work with your engine and not against it. That means the exhaust gases need to be removed, so as not to restrict the removal of gases from the cylinders. So, if your exhasut piping is too large, then the gases get "Lazy" and will not create a vacuum effect to pull the cylinders clean, so that a fresh charge of fuel laden air will enter the cylinder. If they are the right size, then the gases will shrink as they cool and this will cause a vacuum on the cylinders and sweep them clear. If the piping is too small, then the gasses still cool, but cannot be removed efficiently. You will want a 2 1/2" exhaust system for your truck, if you run duals and the choice of muffler is up to you, but I finally settled on Magnaflow mufflers after having several Flowmaster muffler failures in the following years after the build. I have found that the Magnaflows give a low rumble while drivng slow and a loud respnse under heavy throttle. If you run a single exhaust, then a 3" pipe will work for that setup. My 84 truck is still on the road, with another engine in it and it is no slouch in a run and I can pull down some decent gas mileage with the setup that I have.
__________________
Frank |
Bookmarks |
|
|