Ford Authority

This 1966 Ford Mustang Needs No V8

Typically when someone builds up a classic Ford like this 1966 Ford Mustang, they are looking to put a big, throbbing V8 under the hood. Not Zlatko Nastoski, he put what the Aussies call a Barra inline six-cylinder engine under the hood of his 1966 Ford Mustang along with copious amounts of boost. For those outside of Australia who have no idea what a Barra six-cylinder engine is, it’s an inline six that was offered by Ford of Australia between 2002 and 2016 and first seen in the BA Falcon. The Barra name comes from the Barramundi code name that was used during the engine’s development.

The Barra inline-six rolled out of the factory with 209 horsepower. Nastoski says that he was against putting the Barra in his 1966 Ford Mustang because his opinion is you can’t have a muscle car with a six-cylinder engine. When he purchased the car, it was in Ivy Green, and it was repainted in a bright orange color called FG Falcon Sunburst Orange.

The Barra six-cylinder engine is a 4.0-liter engine that came out of a totaled FG XR6 turbo that had low miles. Under the valve cover live ARP head studs, Crow race valve springs, and TBRE billet cams. Nastoski says that he brought the biggest cams he could so that car sounds very aggressive. The engine has lots of custom parts to make it fit into the Mustang. The power-adder for the 1966 Ford Mustang is a Garrett GTX3584RS. Power goes through a KEAS-built Powerglide and a 4000 rpm TCE converter.

The engine makes 1200 Nm (about 885 pound-feet) of torque, and the builder says that the car can burn the tires down even when cruising at highway speeds. The Barra makes about 1000 kW of power at the wheels, which is about 1341 horsepower. We have no official times for the car, but it’s said to be capable of sub-10 seconds passes down the 1320. The Aussies like to build some sick classic Mustangs.

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Source: Whichcar

Shane is a car guy with a fondness for Mustangs and off-roading.

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  1. trailhiker

    Nice. I don’t recall seeing a louvered rear window on anything but a fastback before.

    1. Raymond Ramirez

      My 1984 Olds Ciera had that same type of louvered shades inside, too. The advantage is that they never get dirty as the fastback louvers did since they are outside. And the interior shades didn’t block much my rear view. I had them on the Ciera until 2001 when I sold the Ciera to a neighbor.

  2. Raymond Ramirez

    My wife had a 1980 Ford Mustang with a 3.3 L (200 CI) inline six with the C4 automatic and it ran well, although we were never running any races. It had plenty of torque!

  3. JohnTaurus

    No pics of the engine bay?

    I love Inline 6s, I had intended to get another Mercury Zephyr (I’ve had a couple) and put an American 250 c.i.d. I-6 with an Australian “alloy head” from a 1990s Falcon in order to use a proper multi-port EFI system. Should make some decent power/torque for that car. Not intending on racing it, lol, just want a nice, smooth, unique cruiser.

    1. Shane McGlaun


  4. Joe B.

    My ’17 Mustang 3.7 won’t burn the rubber off the tires, but it will do 0-60 in 5.9 on a good day. That was bragging rights in the muscle car era. Also averages about 22 mpg on 87 octane.


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