I had the Flowmaster DeltaFlow 40's on my BBC. It had a great rumble at idle but didn't sound so great at WOT. I swamped out for Magnaflows and like the sound a bit better. A little quieter at idle but then sounds a little 'sportier' at WOT if that makes sense. I'm running a 3" exhaust, X-pipe, and 2.5 tail pipes.
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Chris Robinson
1969 Camaro SS/RS, 489 ZL-1 MPFI, T-56 Mag
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