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06-29-2008, 01:05 AM
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#1 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Mufflers
My Jimmy needs a new muffler this summer.
A single Magnaflow may be nice. I noticed the pipe goes down from 3" to 2.5" or 2". I can't remember if the down size is infront or behind the catalyst converter. I may go 3" all the way out. What do you have on your 4.3 motors? Anyone have a suggestion? A new highflow muffler is my final step to pick a little more MPG. The Jimmy already has a nice throaty sound at idle and off idle. |
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06-29-2008, 11:52 PM
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#2 |
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Registered User
 
Join Date: Jan 2003
Location: Denison, Texas
Posts: 1,919
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Re: Mufflers
I bought a Gibson aftercat system about 5 years ago for my 98 Sierra w/ 305. This is the same system for this truck if it had a V6 (the 305 and 4.3 share the same exhaust on the 96-98 full size trucks). It was made of "aluminized' pipe. Fit well, still sounds good and price was right from Summit Racing.
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1998 GMC Sierra SLE 1/2 ton 2WD 305 Vortec -Gibson Stainless Cat Back Swept Side -SS Wheels 2005 Honda CRF250R 2006 Honda CRF150F |
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06-30-2008, 09:19 PM
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#3 |
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67-72 Addict!
Join Date: Feb 2002
Location: The TAX State!
Posts: 7,856
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Re: Mufflers
Gerardo- I got the vids for you tonight of my Hooker Aerochamber
 Quiet at idle and nice throaty sound when you get on it here ya go: Hope these work!
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Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads Last edited by 70c10; 06-30-2008 at 10:29 PM. |
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06-30-2008, 10:55 PM
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#4 |
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The Engine Whisperer
Join Date: Sep 2006
Location: Ohio
Posts: 770
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Re: Mufflers
I put a full boar muffler on my 92, all 2 1/4" pipe with the stock y-pipe and no cat.
theres a video of my truck. Last edited by ProStreet68SB; 06-30-2008 at 10:56 PM. |
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06-30-2008, 11:04 PM
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#5 |
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Official Site Guitar Shredder
Join Date: May 2006
Location: Oz
Posts: 3,955
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Re: Mufflers
Sounds GOOD
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07-03-2008, 09:59 AM
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#6 |
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Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,211
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Re: Mufflers
That does sound good...its got the V6 sound, but it doesnt at the same time, IMO. Nice looking old S10, Prostreet. I dont think I've ever seen one that old in that good of shape.
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07-07-2008, 12:58 AM
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#7 |
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Senior Member
Join Date: Jul 2006
Location: Blountville, Tn.
Posts: 3,904
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Re: Mufflers
I just welded on a Flowmaster on my91 2.8 Didn't change the sound that much, i am guessing the cat is muffling the exhaust some. So that is next to go.
__________________
*We could learn a lot from crayons... Some are sharp; some are pretty;and some are dull. Some have weird names; and all are different colours;but they all have to live in the same box. * You may be only one person in the world, But you may also be the world to one person. * Some mistakes are too much fun to only make once. Two rules in life. 1. Never sweat the small stuff! 2. Everything is small stuff! |
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07-07-2008, 09:11 PM
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#8 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: Mufflers
THANKS for the videos! I'm leaning toward a single magnaflow. The Aerochamber soulnds like my dual Magnaflows on my 83 full size pickup.
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07-08-2008, 07:18 AM
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#9 |
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67-72 Addict!
Join Date: Feb 2002
Location: The TAX State!
Posts: 7,856
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Re: Mufflers
Make sure you post a video! Magnaflows sound good!
__________________
Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads |
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