glass pack survey
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Senior User
Joined: Jan 2006
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From: Little Falls,New York
glass pack survey
Any body have any reccomendations for glasspacks?The smaller the better,I'm looking for the old school rap(not music),as mean as I can get it.I'll be running 3" headers w/ rear exhaust exit,390 fe
Lead Driver
Joined: Jun 2006
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From: Near Yosemite CA
I have ONE 9" glasspack 2 1/2" in/out on my 77 nice cackle! Gives a good brap when you rack it! The longer, the mellower, and try to get as close to the manifold/header as you can, closer to the engine, leaves more pipe for the cackling.
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Joined: Oct 2007
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From: Paragould Ar
Blue truck has 2 in pipes with 24 in glasspacks very mellow sound, dumps about 8 in behind cab for now. Green truck has 2.5 pipes 12 in 'packs and rumbles pretty good at idle barly here yourself think under throtle dumps just in front of raer end pops like you wouldn't believe when let off and decelerating.
Elder User
Joined: Nov 2007
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From: Northern Minnesota
small diameter pipes will help make that old school rap, thats whats old school about it, how many people were running 3" duals in the 50's and 60's? more like 2" tops
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Senior User
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8in glasspax? Where did you get thos?
The shrtr the better. Less pipe is better too.
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Senior User
Joined: Jan 2006
Posts: 434
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From: Little Falls,New York
yeah,I have a glass pack dual setup w/2&1/4" in& 2&1/2 out,but looking for manufacturer names of the shortest mufflers I can get.Those 8" sound good,I'd like some of them too
Post Fiend
Joined: Apr 2008
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From: Big Sky Country
Which ever length glasspack you decide to run go with a perforated core and not the louvered core, it will be slightly louder but the perforated core will flow just like straight pipe and the louverd core stirs up a lot of turbulence and is more restrictive to your exhaust flow.
Posting Guru
Joined: Sep 2003
Posts: 2,313
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From: Northeast LA
I have a 302 with long tube headers and 12" glass packs that dump right behind the cab. The video is kinda dark, I need to take a new one.
YouTube - 302 idle and rev
YouTube - 302 idle and rev