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Flowmaster 40 or 44

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Old Apr 3, 2026 | 11:23 AM
  #1  
TimRS's Avatar
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From: McDonough, GA
Car: 1991 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3.42
Flowmaster 40 or 44

Has anyone installed a Flowmaster 40 or 44 with single inlet and dual outlets in the space where the catalytic converter is mounted in its stock location and ran the dual exhaust pipes out the back to look stock?
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Old Apr 3, 2026 | 12:45 PM
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From: Colorado USA
Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
Transmission: 700R-4, 2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: Flowmaster 40 or 44

44 would sound better. I seriously doubt either would fit where the CAT goes.
Personally, I wouldn't put a chambered muffler on a thirdgen...
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Old Apr 3, 2026 | 02:09 PM
  #3  
Tom 400 CFI's Avatar
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From: Park City, UT
Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L400
Transmission: ZF6, T5
Axle/Gears: 3.45, 3.31
Re: Flowmaster 40 or 44

Originally Posted by T.L.
Personally, I wouldn't put a chambered muffler on a thirdgen...
Agree.
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Old Apr 4, 2026 | 03:19 PM
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83 Crossfire TA's Avatar
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Re: Flowmaster 40 or 44

Another data point, the further up the exhaust a restriction (muffler) is installed, the more of a restriction it is, the more it affects power. You're usually best off installing mufflers as far back as possible from a power perspective
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