Lively Valvetrain - 2011 Ford Mustang GT 5.0 Long-Term Road Test
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2011 Ford Mustang Long-Term Road Test

2011 Ford Mustang GT 5.0: Lively Valvetrain

July 20, 2011

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Ed's post regarding what he describes at detonation reminded me of a different characteristic of our longterm 2011 Ford Mustang GT's 5.0-liter engine. When cold, it'll make a muted but distinct quasi-rattle-y noise during light part-throttle conditions between 2600 and 3000 rpm. It's done it since day one. Sounds to my ears like variable cam phasers that need a little heat in order for the internal bits to expand slightly and take up slack. Once warm, it goes away.

It doesn't sound malignant to my ears, which is why I've not been prompted to get too excited about it.

Also, this engine kicks ass.

Jason Kavanagh, Engineering Editor


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