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Stealth FIghter: XA GT resto with 670hp

By Craig Parker, 09 May 2020 Features

It looks like an immaculately restored Red Pepper XA GT - but there is 670hp hidden under the stock aircleaner

Steath Bomb -

WHEN he had to part with his 1972 XA GT some 20 years ago, Bill Kaglatzis promised himself he’d eventually get another one. “It was identical to this car,” says Bill of the one that got away. “Red Pepper, black interior, 351, auto. I sold it to start my business, BK Race Engines.”

This article was first published in the April 2020 issue of Street Machine

Ford Falcon XA GT

Bill vividly remembers what eventually motivated him to fulfil that promise. “I was out getting an ice cream with my wife Dina and son Kosta,” he says. “A convoy of hotted-up cars drove past our Mazda 6: Monaros, Camaros and GT Falcons – it was instant depression! I decided then and there that I needed something that I could the take the whole family cruising in.”

Following a futile two-year search for a suitable donor car, Bill decided to approach good mate Nick Sutic about parting with his completely original XA GT.

Read next: Rare Falcon GTs - XA GTHO Phase IV + RPO 83 XA GT

Ford Falcon XA GT side

“The exterior door handles proved to be one of the hardest things to track down,” says Bill. “The repros don’t look quite right; I had to have originals”

“It was exactly the same as my old car,” says Bill. “Nick had owned it for 20 years, but it’d been parked for a long time. It was tough for Nick to sell – it took a mountain of persuasion to convince him to let it go. It was an honest car in pretty reasonable condition, and the build date is only two months apart [from my old one].

“I took it for a drive and stood on the throttle: Nothing! No tyre-chirp, no pinning me into the seat – just Bat-signals blowing out the exhaust. There was no way I could drive it like was.”

Read next: Ford XA Fairmont 351 streeter

Ford Falcon XA GT front

Plan A called for a quick tidy-up and a new driveline, but Shane from S&K Auto Restorations in Gundagai changed all that. “I build a lot of engines for S&K,” says Bill, “and I think Shane wanted to impress me. It looks this nice because of him; he went way beyond with a full-concours rotisserie restoration. It has all the correct factory decals, as well as all the production paint and chalk markings.”

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Ford Falcon XA GT rear

Being a genuine GT, the build team preserved as much of the original car as possible, including most of the interior. Wherever possible, genuine replacement parts were used as opposed to repro stuff. Chris and Spiro from Falcon GT Restorations spent countless hours tracking down all the necessary bits. Where aftermarket gear had to be substituted, the original stuff was carefully stashed away to allow this Grand Tourer to one day be returned to its showroom-correct state.

Ford Falcon XA GT

The biggest departure is the solid roller-cammed, 406ci stroker between the front rails. “We’ve built a number of this style of engine,” Bill says. “Many of our customers are building GTs and are after that factory look.”

To get 406 cubes, BK punched the block out 20thou to 4.020in, before dropping in a 4.00in Callies Magnum crank, which spins custom Diamond pistons to make the combo work with the factory block. Up top there’s a pair of Scott Cook (SCM Engine Developments) heads and one of his dual-plane manifolds. While Bill concedes these heads are SCM’s smallest, he did get them flowing over 700cfm after adding his own unique tweaks. Another key to the engine’s stock looks is the SCM HO intake. It’s a convincing copy of the heavy cast-iron factory 4V unit, but it works a whole lot better. Making the most of all this airflow capability is a Bullet solid-roller cam teamed with BAM DLC-bushed lifters.

Ford Falcon XA GT

The wire mesh headlight and spotlight protectors were factory-fitted to Bill’s GT as part of its original ‘Country Pack’ option

Hiding under the 351 High Performance air cleaner is a 1000cfm APD Billet Enforcer carby. RaceMAX Direct (the go-fast parts business that Bill and George Bukureshliev are partners in) not only supplied a host of engine components, but also worked hand-in-hand with APD to develop the custom finish on this HO-series carby. It mimics the texture and gold colour of the factory FoMoCo unit.

Ford Falcon XA GT engine bay

With a big roller cam with 700thou lift and a stout 12.6:1 comp pushing 667hp at 7400rpm, this engine is anything but stock. Even better, it’s a torque monster, making more than 500lb-ft by 3000rpm before maxing out at 567lb-ft at 4800rpm. Perfect for street duties!

Another clever piece of camouflaging is the distributor. “It’s a special order from Mich Pyle at Pylec Electricals – he put the ICE guts in the factory Autolite housing,” says Bill. “Mich ran the wiring for the external ICE control box into the glovebox. The factory-coloured wires were used at the dizzy and coil as well – you’d never tell! Mich did a ripper job restoring the original loom.”

Spent gases exit through Gonzo Pipes tri-Ys, dumping into a JT Performance three-inch system. To keep temps under control, there’s a massive three-core radiator – it was factory-fitment in the a/c-equipped Fairlanes and LTDs and is considerably larger than the standard Falcon unit. To maintain critical oil pressure, the ‘winged’ Phase IV sump runs a windage tray and has been fully baffled with trapdoors.

Ford Falcon XA GT engine bay

The factory mechanical pump is just there for looks; it’s been gutted, with an in-tank electric pump now responsible for fuel delivery

Considering BK’s reputation for building some of the toughest motors in the land, it must have been difficult to fight the urge to go crazy. “I could have easily built something way wilder – 800, 900hp,” says Bill. “I just kept reminding myself that the wife and kids had to go in this car.”

In keeping with the GT theme, the driveline comprises a Protrans-built FMX fronted by a 5200-stall SDE converter and a factory-looking nine-inch, filled with 31-spline axles, 3.50:1 gears and Truetrac centre. As with the front suspension and brakes, the reset factory leaf springs and rear end have all been painted factory-perfect. However, Bill did opt for Bilstein shocks all ’round to enhance the XA’s handling prowess.

Ford Falcon XA GT doortrim

In the end, it took a big push by a lot of people to get the car ready for Summernats 33 – especially Chris and Spiro. “They took it upon themselves to get the car finished for Summernats,” says Bill. “I can’t thank them enough, as well as everyone who helped along the way.

“It was never meant to be a show car; I built it as a weekender,” Bill continues. “About two Sundays after the photoshoot I loaded up the three boys and the baby seats [Bill added two sons to the family during the build] and we all headed out for breakfast, then on to the Eastern Creek charity show in support of bushfire relief. It’s funny; my boys have been hearing about dad’s big red car for years – now it’s real! And by not going too insane, we can take it out whenever and wherever we want.”

Ford Falcon XA GT dash

“Apart from new carpets and new seat covers, virtually all the interior is factory original – gauges, crash pad, console, door trims,” Bill says. “I even got a box of eight-track tapes for the dealer-fitted player”

Olympic Champions

THE distinctive-looking Olympic Reflex radial was Ford Australia factory fitment back in ’72. In its day, it was one of the ‘new’ high-performance radial-construction tyres; however, they’ve been out of production for almost five decades.

Ford Falcon XA GT

Looking at the tyres on Bill’s car, you’d probably guess they’re repros. Nope, they’re originals – and worth mega-bucks! “They’re nearly 50 years old – and borrowed,” says Bill. “I only put them on for the Meguiar’s Great Uncover at Summernats. I’m too scared to drive on them; I’m worried they’ll disintegrate.”

To get them looking new again, they were sandblasted, and from there it took some tricky elbow grease to get rid of all the cracks in the sidewalls! Bill likes the look of the 12-slotters, and since the photoshoot he has popped a set of fresh boots onto those iconic 14x7 steelies.


Paint: PPG Red Pepper

Brand: 406ci Cleveland
Heads: SCM 4V alloy
Intake: SCM HO dual-plane
Camshaft: Bullet solid-roller, 250@0.050, 700thou lift
Pistons: Diamond
Conrods: Oliver
Crank: 4.00 Callies Magnum
Fuel pump: Electric in-tank
Cooling: Three-core air conditioning radiator
Headers: Custom tri-Y
Exhaust: Dual 3in with X-pipe, 16in mufflers
Ignition: Autolite housing, ICE internals

Gearbox: FMX
Converter: SDE 8in, 5200rpm stall
Tailshaft: Mark Williams with 1350 units
Diff: 9in, 31-spline, 3.50:1 gears, Truetrac

Front suspension: Pedders springs, Bilstein shocks
Rear suspension: Pedders reset leaf springs, Bilstein shocks
Brakes: Power-assisted discs (f), 3in finned drums (r)

Rims: Ford 12-slotters 14x7 (f & r)
Rubber: Olympic Reflex ER70H14 (f & r)

BK Race Engines; RaceMAX Direct; Falcon GT Restorations; S&K Auto Restorations; ICE Ignition; SDE Torque Converters; Advanced Product Design; JT Performance; Protrans Performance Automatics; BAM Lifters; Nulon Oils; Pylec Electricals; American Auto Parts; my good mates Joseph Somma, John Briscas, Johnny Roso, Troy Papadopoulos, Peter Kala and Steve Walsh; most importantly, my patient and lovely wife Dina and our three boys Kosta, Alexander and Lucas