The top end comprises a CNC-ported head from Blackwell
Race Engines, Crow Racing valve springs and retainers, Atomic
anti-pump lifters, stage III TBRE camshafts, and the eyebrow-
raising set of six custom 50mm BMW individual throttlebodies,
fuelled by 1300cc injectors. “The ITBs are something cool and
different, and they sound awesome,” Zane says.
Down below, there’s a balanced standard crank, ACL race
bearings, Spool H-beam rods, standard LPI Barra pistons with
Mahle rings, and an Atomic billet oil pump that’s been further
modified by Maxx. Nothing on this donk has been left untouched;
even the accessory drive system has copped a renovation with a
Davies Craig electric water pump, while a Ross Racing balancer
has replaced the factory pulley.
“It was all about squeezing everything we could out of it, so the
car has no a/c, no heater box, and the removal of the water pump
and power steering with the new pulley means that what’s left is
now 40 per cent under-driven,” Zane says. In aspirated form, the
engine pumps out 230rwkW (308hp) on pump E85, but that’s
not the main party piece of this set-up.
The nitrous for this new mill has been switched to a Nitrous
Outlet dual-stage dry system, capable of a 600-shot, and the
most the boys have run so far is 375. Controlled by the Haltech
plug-in Barra ECU, the EF can scream out 400-450kW (536-
603hp) at the wheels, depending on how much giggle gas Zane
feels like feeding it.
“We’ve spent a lot of time figuring out what exhaust we need,
what plugs work best and so on, but we haven’t had any dramas
with stuff breaking yet,” Zane says.
The EF is yet to hit the track with the new mill, but Zane maintains
that the purpose of the car is unchanged. “I’m hoping it’ll run a
mid-to-high 10, and I’ll still daily-drive it as it is and take it to car
shows with my son Max,” he says. sTHE EF CAN SCREAM OUT 400-450KW AT THE WHEELS,
DEPENDING ON HOW MUCH GIGGLE GAS ZANE FEELS
LIKE FEEDING IT
SWITCHING GEARS
WHILE Zane got the car with a
BTR four-speed from a BA, he
soon manual-converted the EF
to a T5 five-speed from an EF
XR6. The car went 12.5 with the
manual and a single shot of gas,
but Zane couldn’t find a clutch
that could hold under the nitrous
when the boys switched it to a
two-stage system. The car then
got another BTR from an AU,
before the C10 that’s in it now
was slotted in.