Taking into account the ’Bird’s exercise regimen of routine autocross and road race competition, it serves as yet another example of ultra high-end g-Machines getting thoroughly abused like beaters costing a fraction of their price. Maybe the growing number of events that encourage on-track skirmishes has something do to with it, or maybe people just want to have more fun for their hard-earned buck. All we know is that if you’re unfortunate enough to go head-to-head with this blacked-out ’Bird at one of these events, you will learn about the power of the Dark Side, and you will learn it very quickly.

By The Numbers

1970 Pontiac Firebird

Thomas Cronkright, 36 Grand Rapids, MI


Type: Pontiac 455

Block: Butler aluminum block bored to 4.250 inches

Oiling: Melling oil pump, Canton seven-quart pan

Rotating assembly: Eagle forged 4.000-inch crank and rods; custom Ross 8.5:1 pistons

Cylinder heads: Kauffman aluminum castings with 2.200/1.700-inch valves and 64cc chambers CNC ported to flow 380 cfm

Camshaft: COMP Cams custom hydraulic roller

Valvetrain: COMP Cams valvesprings, lifters, retainers, and timing set

Induction: custom billet Visner intake manifold, dual 4-inch throttle-bodies, twin 66mm Bullseye turbochargers, custom air-to-air intercooler, Tial 44mm wastegates and blow-off valves

Fuel system: Rick’s Hot Rod Shop tank; Aeromotive Eliminator pump and regulator; FAST XFI stand-alone computer and twin injectors per cylinder

Ignition: MSD 6AL box, Mallory distributor

Exhaust: custom stainless steel turbo headers, X-pipe, and dual 3-inch MagnaFlow mufflers

Output: 1,020 hp at 5,900 rpm at 12.5 psi

Built by: All Speed Customs


Transmission: Rockland T56 Magnum six-speed trans, Ram twin-disc clutch, Kiesler shifter

Rear axle: Moser 12-bolt rearend, 3.55:1 gears, Detroit TrueTrac limited-slip differential


Front suspension: Detroit Speed and Engineering upper/lower control arms and sway bar; QA1 coilovers; Classic Performance Products 2-inch drop spindles

Rear suspension: DSE four-link, sway bar, and coilovers

Brakes: Wilwood 14-inch discs with six-piston calipers, front; Wilwood 13-inch discs with four-piston calipers, rear

Wheels & Tires

Wheels: Forgiano Ritorno 19x10, front; 20x12.5, rear

Tires: Nitto NT05 275/30R19, front; 315/35R20, rear