When you go the next step and move to forged internals, these mills are capable of silly amounts of power, as Anel Karic recently found out with his Tunnel Vision-built FPV F6. Jason Ghiller at Tunnel Vision stripped the factory F6 motor and had a set of custom SPS pistons machined up to suit. A Tunnel Vision billet crankshaft and Nitto rods complete the rotating assembly.
On the hot side the Barra runs a 6boost exhaust manifold with an 88mm Garrett GTX47 turbo, which blows boosted air through a Jonny Tig intercooler. Jason also machined up one of his own custom intake manifolds for the combo, similar to what’s on his own Drag Challenge-conquering low-eight-second Barra-powered XD Falcon street car.
A MoTeC M150 ECU runs a set of 2400cc injectors linked up to an E85 fuel system. At full noise the whole deal runs over 40psi of boost on a factory Ford engine block. Through a Powerglide trans and toughened-up independent rear end, the car made a tickle over 1 megawatt at the rear tyres – 1004kW all up (1347hp)!
Safe to say this is one tough and fairly stealthy street car that’s capable of melting a set of tyres at will.