trans am firebird exhaust flowmaster idling

78 t/a 400 4-speed with headers & flowmaster mufflers.

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Soundcheck - Firebird with Magnaflow mufflers
1978 Pontiac Firebird Formula 400 Dynomax headers 2.5" true duals Mangaflow mufflers





1979 Trans Am, Flowmaster 40 series
1979 Trans AM with Flowmaster 40 series mufflers and Hedman Headers





1970 pontiac firebird flowmaster 40 series 350
1970 pontiac firebird flowmaster 40 series 350





1981 Trans Am - Jegs 2.5 inch exhaust system with flowmaster 40s
1981 TA Jegs 2.5 inch kit without mufflers, bought flowmaster 40s, no cats, stock manifolds. 4.9 liter pontiac motor 301.




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