The Cabriolet version of the GS model has a 7458 cc (455.1 ci) 16 valve V 8 Naturally Aspirated Petrol engine.
This particular Buick GS 455 Stage 1 7.5 V8 has a 3 speed / Auto gearbox with the power being delivered through it's RWD system.
The 1969 Buick GS reaches its peak power of 350 bhp (260 kW) @ 4600 rpm.
The 1969 Buick GS produces torque measuring 510 lb-ft (691.4 Nm) @ 2800 rpm.
The GS weighs around 1702 kg (3752 lb). The 1969 Buick GS Power to weight is 205.6 bhp per metric ton or alternatively as 299.6 lb-ft of torque per ton.
The 1969 Buick GS has a top speed of 145 mph (233.3 kph)
The 1969 Buick GS accelerates 0-60mph (96.6 kph) in 5.50 seconds or 0-100kph in 5.7s. The 1969 Buick GS estimated 1/4 mile drag time is 14.07 seconds with a trap speed of 97.8 mph.