In this video I take our 1957 Chevy truck with a Big Block Chevy 454 and compare the sound of the old Flowmaster 50's and the new Black Widow 250's. You will see the install of the new mufflers and be able to hear the difference between the Flowmaster's and the best muffler ever.
#flowmaster vs venomblack #widow exhaust #black widow exhaust #454 exhaust

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