Rated at 320 horsepower in 1967, the S-code 390-cubic-inch V8 was the first big-block engine ever offered in the Ford Mustang ...

1967 witnessed ... The top engine choice this year was the 390 block with a four-barrel carburetor. It sported a dual-exhaust system and produced 320 horsepower. Ford's strategy did not produce ...

Base Custom 1967 Ford Mustang features Roush 347 SR engine ... It was offered with a wide range of powerful engines, including the 390-cubic-inch V8, which delivered impressive performance.