Back in the 1960s it wasn’t uncommon to see scores of muscle cars like Mustangs, Camaros, and the like lined up at the local exhaust shop to have a set of Thrush’s red Glasspack mufflers installed.

If you're old enough, you might remember when Thrush hit the muscle-car scene in the late-1960s with its Thrush Glasspack muffler. If you're old enough to remember that, then you may not want to ...

Tecumseh Racing's Jerry Romanick makes adjustments to their small-block MoPar test mule, while Thrush's Peter Roberts digs through the mounds of mufflers gathered for these evaluations. Traditionally, ...

On this episode of Engine Masters, David Freiburger and company set out to determine if a 3-inch exhaust system will net a loss when compared to a 2.5-inch exhaust on a Chevrolet L98 V8 engine out of ...