what should i do?
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Joined: Aug 2004
Posts: 144
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From: WACO,TX.
Car: 84 berlinetta
Engine: 305
Transmission: auto
what should i do?
have stock 305 will get headers in the future, probably when i get a 350. have a flowmaster and the cat looks to have been replaced, thinking about getting 3" tubing from the cat back to the flowmaster, will this help? also thinking bout gutting the cat. what if i put a big glasspack behind the cat and turndown before the rear end? just as Jesse James says " i don't want it to sound good i want it to sound like hell"
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Joined: Jul 2004
Posts: 1,840
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From: Tigard, Oregon
Car: '86 Berlinetta
Engine: 350
Transmission: 700R4
you could replace the cat-back with 3 inch mandrel bent tube, but you'll still be restricted in your exhaust until you get headers and a good y-pipe... the stock manifold and y-pipe are insanely restrictive.... but you should notice small, minimal amounts of improvement from the stockers.... you will probably have to buy a 3 inch outlet cat, and a new muffler with 3 inch outlets
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From: Kansas City
Car: 1991 Trans Am
Engine: L98
Transmission: T56
on top of what the guy above me said, you will also be restricted until you replace the blowmaster you have. get something better than blowmaster.
and please dont do the glasspack before the axel. are cars have enough problems with the ****** white trash image goin on.
and please dont do the glasspack before the axel. are cars have enough problems with the ****** white trash image goin on.
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Joined: Jul 2004
Posts: 1,840
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From: Tigard, Oregon
Car: '86 Berlinetta
Engine: 350
Transmission: 700R4
i agree that flowmasters have bad flow, but some people can look past that in order to sound like they like... personally I dont like the flowmaster sound.
The glasspack you wont get any extra flow from, but if you like the sound then go for it, just know that you arent improving the white trash image, as posted above
By all means, do it if you want to though.
Just realize that you arent getting any performance from your current plans... maybe very small amounts though... If I were you I'd buy some 1 5/8 headers (nothing cheap, otherwise you defeat the purpose), and then get a cat-back and a cat. Then put it all on at one time and you'll definetly notice a improvement. For me there is no point in putting headers in w/o a freely flowing cat-back, or vice-versa so i wont replace either until i have both on hand.
The glasspack you wont get any extra flow from, but if you like the sound then go for it, just know that you arent improving the white trash image, as posted above
By all means, do it if you want to though.Just realize that you arent getting any performance from your current plans... maybe very small amounts though... If I were you I'd buy some 1 5/8 headers (nothing cheap, otherwise you defeat the purpose), and then get a cat-back and a cat. Then put it all on at one time and you'll definetly notice a improvement. For me there is no point in putting headers in w/o a freely flowing cat-back, or vice-versa so i wont replace either until i have both on hand.
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Joined: Apr 2003
Posts: 717
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From: pittsburgh, PA
Car: 84 Firebird Trans Am
Engine: 305 4bbl HO
Transmission: 700-R4, 3.73 rear
The glasspack you wont get any extra flow from
he wants to use (sry..HAS) a FM!! i have a glasspack on my car (hedman hedders, no cat, and glasspack) and it sounds great. real mean sound.new 3k rpm max
EDIT: i thought i'd add this. this was the same type of clip. stock, with cat but no muffler. 3k max ..the new clip was in my garage and the old one was in my driveway, so that y the new one has an echo
Last edited by chio987; Oct 8, 2004 at 10:54 PM.
Junior Member
Joined: Sep 2004
Posts: 27
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From: Houston, TX
Car: 89 GTA WS6
Engine: 5.7
Transmission: turbo 400 shift kit
I thought glasspacks went out of stlyle around 82 when the 1 st 3rd gen came off the line. "Thrush" is an illness now NOT a goood sounding exaust,unless u have a 82 Chevy truck!!!! LOL LOL LOL LOOLLLLLL!!!!!!!!
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Joined: Apr 2003
Posts: 717
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From: pittsburgh, PA
Car: 84 Firebird Trans Am
Engine: 305 4bbl HO
Transmission: 700-R4, 3.73 rear
hey now jimi...doesn't my first clip sound good?? that's a cherry bomb inplace of the cat (mainly bcuz of lack of money and cat was shot) but i like it. it'll do until i get my duals
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Thread Starter
Member
Joined: Aug 2004
Posts: 144
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From: WACO,TX.
Car: 84 berlinetta
Engine: 305
Transmission: auto
what type of headers should i look for on a limited budget? also will they bolt up to the stock y pipe? i would love duals but concerned with the clearance issue. also should i get rid of the flowmaster? would it make any difference since i'm not white (with the glass pack idea?)
Senior Member
Joined: Apr 2003
Posts: 717
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From: pittsburgh, PA
Car: 84 Firebird Trans Am
Engine: 305 4bbl HO
Transmission: 700-R4, 3.73 rear
what type of headers should i look for on a limited budget?
also will they bolt up to the stock y pipe
also should i get rid of the flowmaster?
Supreme Member
Joined: Jul 2004
Posts: 1,840
Likes: 1
From: Tigard, Oregon
Car: '86 Berlinetta
Engine: 350
Transmission: 700R4
if you're on a budget then i suggest saving for longer
There's no point in getting sub-par "performance" upgrades... it truely defeats the purpose.
As for glass packs... if you like the sound go ahead.... and thanks for not getting fart cans
Look at the stickies on the top of the page, it'll show you the performance / price for headers (headers come with y-pipes typically). Any 3 inch mandrel bent aftermarket cat-back will be a big upgrade from your stocker... but they have to be both 3 inch, AND mandrel bent!
I hope this helps you
There's no point in getting sub-par "performance" upgrades... it truely defeats the purpose.As for glass packs... if you like the sound go ahead.... and thanks for not getting fart cans

Look at the stickies on the top of the page, it'll show you the performance / price for headers (headers come with y-pipes typically). Any 3 inch mandrel bent aftermarket cat-back will be a big upgrade from your stocker... but they have to be both 3 inch, AND mandrel bent!
I hope this helps you
Senior Member
Joined: Apr 2003
Posts: 717
Likes: 0
From: pittsburgh, PA
Car: 84 Firebird Trans Am
Engine: 305 4bbl HO
Transmission: 700-R4, 3.73 rear
if you're on a budget then i suggest saving for longer There's no point in getting sub-par "performance" upgrades... it truely defeats the purpose.
Supreme Member
Joined: Jul 2004
Posts: 1,840
Likes: 1
From: Tigard, Oregon
Car: '86 Berlinetta
Engine: 350
Transmission: 700R4
sorry i did not mean that a glasspack was worse for flow than a flowmaster... i was confused actually, I thought that you meant adding a glasspack on top of the flowmasters. I gave a gander at your sound clip of your exhaust man, it sounds real nice



