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Nitrous-assisted Barra six screams on the dyno - no turbos needed!

By Kian Heagney | Photos: Nathan Jacobs, 16 Aug 2019 Dyno

This nitrous-assisted, Barra-powered EF Falcon pumps out over 400kW at the treads!

Nitrous-assisted Barra six screams on the dyno - no turbos needed!

ZANE Heath is the mastermind behind Maxx Performance, one of the leading specialists for all things Ford and Barra. While the Maxx crew is capable of taking on just about any project and engine, turbo Barras are their bread and butter; they offer bolt-on packages and dyno tuning that make them one of the best in the business with the Aussie 4.0-litre.

It should therefore come as no surprise that Zane’s own stealthy EF Fairmont is also hiding a Barra mill, but oddly, there’s no turbo in sight. “When I bought the car around two years ago it already had a Barra conversion with just a standard BA taxi engine and auto,” Zane says.

The conversion wasn’t quite up to Maxx’s standards, so the boys ended up redoing the whole lot, and then Zane started using it as a test mule. “We do turbo Barras day in, day out, so I wanted to do something different,” he explains. “What we hadn’t really explored was what works best with these motors naturally aspirated, and how much power you can milk out of them.”

Zane spent lots of time on the dyno at Maxx, R&Ding different intakes, exhaust and tune set-ups on the stock BA mill. Long story short, he ended up with around 200rwkW (268hp) aspirated from the 250,000km-old mill, with the help of a custom exhaust, E85 and tune.

The boys then started playing with nitrous, and with a two-stage wet shot the car devoured over 100 bottles of gas and went a best of 11.8 @110mph, while still performing daily driving duties. Eventually something had to give, and one of the standard injectors cried ‘enough!’ and sent the BA Barra to the graveyard.

The replacement mill that’s in the car now is a fully reworked LPG-spec Barra from an FG. The machine work was done by Top Torque Engines, and the motor was assembled by Maxx in-house. With a combination of a 600hp dual-stage nitrous system, BMW throttle bodies, Haltech plug-in ECU and many other tweaks, the beast has pumped out over 400kW at the treads. 

Enjoy the video and check out the September 2019 issue of Street Machine for the full story.