The chassis of the 1930 Packard 734 Speedster employed boxed 733 Standard Eight side rails in the 134 ½ inch wheelbase with 733 cross-members. The engines were massaged with two-barrel Detroit Lubricator carburetors, finned manifolds and a 6:1 compression ratio cylinder head to deliver 145 horsepower. It also equipped with special finned, forged iron brake drums, cable-operated at the front and rod-operated at the rear. The braking surface was 2 inches wide, with three-leading shoe linings. 19 inch wire wheels with 6.50 profile tires were fitted. The 734 Speedster's power, torque and lightweight coachwork equiped it with high-speed 4.11 or 4.27:1 rear axles giving it 60mph performance in second gear. The 734 Speedsters achieved road speeds in excess of 100mph in top gear.