Just started my exhaust work! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 09-30-2005, 08:48 PM   #1
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Default Just started my exhaust work!

Just ordered a 3" Magnaflow HF cat off ebay, bought my 3" downpipe, 3" HF resonator, and am picking up a like new (yeah, it'* used) Flowmaster 40 Series (2-1/2 inlet with dual 2-1/2 outlets) off a Camaro.
With these and the manifolds coming off my 93 SLE for porting I hope to be able to run the 2.4" pulley with minimal problems.
The piping after the resonator will be the 2.5" piping off my old 97 SSE parts car.
I am probably going to just have stock style turn down tips for the winter, but in the spring I might fall for some SS oval resonated tips like I had on my 1998 SSE.

Anyhow, that'* the update. Wish I could have this all on before the track next weekend but probably won't happen -Anyone want to go to Rock Falls Raceway in late October?
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Old 09-30-2005, 08:49 PM   #2
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Also, in the spring I am going to swap the Flowmaster out for a Borla ProXS.
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Old 09-30-2005, 09:18 PM   #3
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you mean 80 series flowmaster?
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Old 09-30-2005, 09:30 PM   #4
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Quote:
Originally Posted by optmusprimer
you mean 80 series flowmaster?
Nope -40 series. Not sure which is better -I'm assuming the 80 Series, but for $30 on a like new high flow muffler I couldn't pass (even though I was really planning on either a Magnaflow since it'* a bit quieter or a Borla since they just sound SO awesome).
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Old 09-30-2005, 10:22 PM   #5
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Quote:
Originally Posted by OLBlueEyesBonne
Quote:
Originally Posted by optmusprimer
you mean 80 series flowmaster?
Nope -40 series. Not sure which is better -I'm assuming the 80 Series, but for $30 on a like new high flow muffler I couldn't pass (even though I was really planning on either a Magnaflow since it'* a bit quieter or a Borla since they just sound SO awesome).
wow...get ready for some noise. 40 series is the loudest they make. 80 series is the quietest. i hope you like the sound!
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Old 09-30-2005, 10:22 PM   #6
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my understanding was that 40 series were only all single inlet/outlet mufflers, and that all 80 series were transverse mount mufflers
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Old 09-30-2005, 10:55 PM   #7
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Marty ...if i make it to a MN meet or next years B fest...i might have to take that 40 off your hands...i want one really bad
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Old 09-30-2005, 11:39 PM   #8
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**Newbie**

I think you meant the 70 series here is the link...
http://flowmastermufflers.com/mufflers.html#
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Old 10-01-2005, 01:58 AM   #9
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OLBlueEyesBonne where did you get your 3" DP? What type of connection does it have at the EM'*? Does it still have the donut? Or is it have just a gasket and flex?
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Old 10-01-2005, 02:13 AM   #10
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Quote:
Originally Posted by Lowrider0308
Quote:
Originally Posted by OLBlueEyesBonne
Quote:
Originally Posted by optmusprimer
you mean 80 series flowmaster?
Nope -40 series. Not sure which is better -I'm assuming the 80 Series, but for $30 on a like new high flow muffler I couldn't pass (even though I was really planning on either a Magnaflow since it'* a bit quieter or a Borla since they just sound SO awesome).
wow...get ready for some noise. 40 series is the loudest they make. 80 series is the quietest. i hope you like the sound!
I thought the american thunder series was the loudest they make
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