* 389 CID (Cubic Inch Displacement) V8: This was the base engine. Several variations existed, differing in horsepower and torque based on the carburetor and other components. Horsepower ranged from roughly 325 to 360 hp, depending on the specific configuration (e.g., 2-barrel, 4-barrel, Tri-Power).
* 400 CID V8: This was a new larger-displacement engine introduced in 1967. Again, different carburetor setups resulted in varying horsepower figures, usually between 335 and 360 hp (similarly to the higher-output 389s).
It's impossible to give *precise* motor specifications without knowing the exact build sheet of a particular 1967 GTO. The horsepower and torque figures varied depending on the options selected. The information above represents the general range of engine options and their approximate power outputs. To find the exact specifications for a specific GTO, you would need its original documentation (build sheet or dealer invoice).
