Cooling a Z/28 Camaro

Modified Bowtie emblem improves performance

Eric Kaminsky - March 06, 2014 09:30 AM

ImageGraphic by General Motors

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When the 2014 Camaro Z/28 was developed, engineers scrutinized every component – including the Chevrolet bowtie emblem in the grille – looking for ways to improve track performance, lap after lap.

During aerodynamics testing, Powertrain Cooling Development engineer Richard Quinn noticed that the bowtie on the Z/28’s grille was displacing air away from the radiator – which affected engine cooling.

His solution (since removing the emblem altogether wasn’t an option) was to take a cut-off wheel to the gold fill of the bowtie, leaving the silver outline intact. He installed the prototype on the grille and retested to see the results.

“There are engineers in our team that race as a hobby,” said Quinn, “and we used that racer’s mindset to look for ways small or large to get better performance out of the Z/28. Even the smallest details on the Z/28 were weighed for cooling benefit, and this is one that stuck.”

The “Flowtie,” as the engineers now call it, is just the chrome outline of the traditional bowtie, with the center removed. This change allows three additional cubic meters of air into the engine per minute. Engineers found the Flowtie dropped the temperatures of engine coolant and engine oil by 2°F (1.2°C) during extended track sessions. The modified emblem is now standard on every new Z/28.

The 2014 Camaro Z/28 arrives in dealerships this spring.


For a video explaining “Flowtie”, click the link below: