1970 Plymouth Superbird Clone with a 392 ci HEMI V8

When Smithfield Foods wanted a Plymouth Superbird built for a giveaway they turned to Richard Petty and his Petty’s Garage in Randleman, North Carolina. The company started with a 1970 Plymouth Road Runner they purchased in December, 2016. The body required many hours in rust repair with the entire floor, rear outer wheel wells, rear panel parts, and both quarter panels being replaced. Then came more hours of grafting the fiberglass Superbird panels. Under the hood sits a 392 ci Gen 3 Hemi V8 that produces 505 horsepower and 495 lb-ft of torque. The drivetrain consists of a Silver Sport A41 four-speed automatic transmission connected to a Chrysler 8.75″ rear end with 3.73 gears.

Full Specs:
Engine:

• Mopar “Scat Pack” Apache 6.4 L Gen 3 Hemi V8
• iron block with four-bolt main caps
• iron crank
• powdered metal rods
• hypereutectic cast pistons
• alumunim A319 heads
• stock hydraulic roller camshaft
• 10.9:1 compression

Output:

• 505 hp
• 495 lb-ft

Exhaust:

• TTi headers
• Magnaflow exhaust

Drivetrain:

• Silver Sport A41 transmission
• Chrysler 8.75″ rear end with 3.73 gears

Suspension:

• Front-
• stock with QA1 swap bar
• QA1 double-adjustable shocks
• REar-
• stock with Super Stock leaf springs
• QA1 double-adjustable shocks

Brakes:

• Front-
• Wilwood 14″ rotor
• Wilwood four-piston calipers
• Rear-
• Wilwood 12.88″ rotor
• Wilwood four-piston calipers

Body:

• 1970 Coronet hood
• Dodge Cornet Fenders
• fiberglass Superbird nose

Wheels & Tires:

• Front-
• Circle Racing Magnum 500 19×8 wheels
• General Tire G-Max AS-05 225/40/19
• Rear-
• Circle Racing Magnum 500 20×9.5 wheels
• General Tire G-Max AS-05 275/40/20

Source: Petty’s Garage (project page and build album) and Petty’s Garage FB page