A 1973 Pontiac Firebird Formula restomod with LS1 V8 power and modern upgrades is up for sale in Miami.
Trans Am Specialties of Miami, a dealership renowned for its focus on Pontiac Firebirds and Trans Ams, is offering a distinctive restomod that blends classic style with modern performance. The car in question is a 1973 Pontiac Firebird Formula equipped with a heavily upgraded LS1 V8.
Under the hood lies the 5.7-liter LS1 engine, originally fitted to fourth-generation Firebird Formulas and Trans Ams from 1998 to 2002. This particular powerplant has been extensively modified, featuring upgraded bearings, piston rings, camshaft, injectors, intake, and throttle body. The LS6 cylinder heads have been remanufactured and secured with ARP bolts, ensuring durability. A six-speed T56 manual transmission with a stage 2 clutch sends power to the rear wheels, bringing the classic Pontiac into modern territory.
Performance enhancements extend beyond the engine bay. The Firebird rides on a Hotchkis suspension and stops with Wilwood disc brakes equipped with slotted and drilled rotors. A dual exhaust with Flowmaster mufflers adds a proper soundtrack, while 17-inch YearOne wheels wrapped in Nitto tires complete the stance.
The cabin remains faithful to the 1970s formula but features select upgrades. Woodgrain trim, bucket seats, and a Hurst shifter keep the retro look intact, while a modern air conditioning system ensures comfort in Miami’s heat.
Documentation includes the original window sticker, which shows the car was initially sold as a well-optioned Formula with a 455-cubic-inch V8, power steering, power brakes, and an AM/FM stereo with 8-track. In 1973, the sticker price was $5,186 — about $39,500 when adjusted for today.
The listing highlights how restomods like this Firebird preserve classic muscle car character while integrating modern engineering, appealing to enthusiasts who want nostalgia without sacrificing drivability.
