One of Street Machine’s best-known project cars, the two-door EA Falcon known as the Sony Scorcher (SM, Mar ’98) will soon be back on the scene with a ferocious centrifugally blown Windsor combo. Built by Ed Johnson of EJR Performance in Morisset, NSW, this mill is a burger with the lot.

First published in the January 2026 issue of Street Machine

“Brad, the owner of the car, wanted everything thrown at this one, and I was told to tick every box on the order sheet, as he wants to make real power,” says Ed, who kicked off the 1500hp-rated build with a fresh Dart Iron Eagle block running the shorter 8.2-inch deck height.

Bored to 4.155in, the block was then filled with custom DSS pistons for 8.5:1 comp, a Callies Magnum steel crank, and Wiseco Boostline rods, with the capacity coming in at 369ci.

“We’ve gone with a big bore in a short deck height to try to get it to rev,” Ed explains. “We wanted to unshroud the valves and get the air moving around them as much as possible, and this is the luxury of the Dart block, because you can push the bores out and do that. It’s got a good amount of comp in it because Brad initially didn’t know whether it was going to be twin-turbocharged, Roots-blown, or have a ProCharger.”

A Crow solid-roller cam was custom-ground to EJR’s specs, although Ed considered going a different route. “It was going to be a hydraulic-roller cam, but we moved to solid lifters,” he says. “Brad is chasing power and wants to run in events like the Summernats Horsepower Heroes, so we needed the solid lifters, but the cam still has a hydraulic profile in it.”

On the bottom of the combo is a custom ASR oil pan to suit the E-series Falcon front end and clear all the fasteners in the Dart block. Good oil control will be mandatory, as Ed reckons this Windsor is going to rev like a sportsbike. “It should see 8500-9000rpm all day long if Brad wants it to,” he says. “I’ve got a few oil pump mods we do, but the rest of it is all pretty well handled with the oiling system in the Dart block.”

Up top are 220cc AFR Renegade heads, cleaned up and mildly ported, while Jesel Sportsman shaft-mount rockers round out a stout valvetrain. “We kept rocker ratios to a nice 1.7 just to match the custom-ground cam,” says Ed.

It’s crowned by a single-plane, port-matched, Edelbrock EFI intake manifold and a 90° Aeroflow Boosted elbow, which will be joined by an Aeroflow LS throttlebody in the car.

The party-starter is that ProCharger F-1X hanging off the side of the head. However, it’s not going to be there forever. “He’s planning on stepping up to a larger F-2 ’charger,” Ed says. “For now, though, he’ll use this supercharger to get it to Summernats and will step up from there. In time, he’s also wanting to switch it over to flex-fuel to push the power.”

SIDE HUSTLE

While not as common on Aussie streets today, side-mount blowers were more popular than cold beer in a hot pub back when the Sony Scorcher was built in the late 90s (although SM never fitted one to the Scorcher). Long before Eaton’s TVS top-mount pumps or turbos were de rigueur, these belt-fed superchargers provided a quick way to boost the performance of many late-model Aussie muscle cars, and still make rude power today.

EJR Performance
Morisset, NSW
ejr-performance.com