The Corvette Sting Ray of 1967:

In 1967, the Corvette got additional engine cooling vents, and 427s got a different "power bulge" hood and more top horsepower.

The new hood had a large, forward facing air scoop, usually with engine call-outs on both sides.

The standard engine was 327 V8 rated at 300 bhp.

But for performance fans, there were four versions of the 427 available.

1st: The L36, a single four barrel carb. It was rated at a stout 390 bhp.
2nd: The L68, triple two-barrel Holley carbs (a first for Corvette)and was rated good for 400 bhp.
3rd: The L71 with triple two-barrel Holley carbs, solid lifters, special performance cams, and was conservatively rated at 435 bhp.
4th: The Extremely rare, that only 20 were built, was the top of the line L88. It featured new aluminum heads, a single Holley four barrel carb, an aluminum intake manifold with a special raised plenum chamber. In addition, you got a transistor ignition and Positraction differential but didn't get a fan shroud, heater, nor defroster.

At that time, Chevrolet was reluctant about revealing the engine's true potential and officially rated at only 430 bhp, but most experts believed that it in fact developed close to 600 bhp!

In all, 9,707 big-blocks were built, meaning that 42.31% of all 1967 Corvettes were 427s.

Other options included side-mounted exhausts, cast aluminum bolt-on wheel, and detachable hardtop for the convertible.