How much horsepower does a 1967 Pontiac GTO have?

Answer 1

This depends on the specific model of GTO and the options included in it:

between 255 and 360 horsepower, torque rating was between 397 and 438 ft-lbs.

400 ci non-performance 2 bbl 255 bhp (190 kW) at 4400 rpm, and 397 ft·lbf (538 N·m) at 4400 rpm.

400 ci Std 4bbl 335 bhp (250 kW) at 5000 rpm, and 441 ft·lbf (598 N·m) at 3400 rpm.

400 ci HO 4bbl 360 bhp (270 kW) at 5100 rpm, and produced 438 ft·lbf (594 N·m) at 3600 rpm.

400 ci Ram Air 4bbl 360 hp (270 kW) at 5400 rpm, and produced 438 ft·lbf (594 N·m) at 3600 rpm. (under-rated, actual hp higher)

Note that air conditioning and automatic transmission soak up at least hp off the engine to the rear wheels.