The Yenko Super Camaro was a modified Chevrolet Camaro

First-generation Chevrolet Camaro

The first-generation Chevrolet Camaro appeared on September 26, 1966, for the 1967 model year on an all brand new rear-wheel drive GM F-body platform and would be available as a 2-door, 2+2 seat, coupe or convertible with a choice of six-cylinder and V8 powerplants...

 prepared by Yenko Chevrolet

Yenko Chevrolet

Yenko Chevrolet, located in Canonsburg, Pennsylvania, was one of largest custom muscle car shops of the late 1960s and early 1970s. Don Yenko, son of the dealership founder, first sold specially ordered and equipped Corvairs in 1965 through 1967 as the Yenko Stinger.-History:In 1966, Don Yenko was...

, under the command of Don Yenko. The originals were all first-generation Camaros. When the Camaro debuted, a General Motors

General Motors

General Motors Company , commonly known as GM, formerly incorporated as General Motors Corporation, is an American multinational automotive corporation headquartered in Detroit, Michigan and the world's second-largest automaker in 2010...

 corporate edict prevented it from carrying an engine larger than 400 in³ (6.6 L) V8

V8 engine

A V8 engine is a V engine with eight cylinders mounted on the crankcase in two banks of four cylinders, in most cases set at a right angle to each other but sometimes at a narrower angle, with all eight pistons driving a common crankshaft....

; this put the Camaro at a serious disadvantage to the Ford Mustang

Ford Mustang

The Ford Mustang is an automobile manufactured by the Ford Motor Company. It was initially based on the second generation North American Ford Falcon, a compact car. Introduced early on April 17, 1964, as a "1964½" model, the 1965 Mustang was the automaker's most successful launch since the Model A...

, Plymouth Barracuda

Plymouth Barracuda

The Plymouth Barracuda is a 2-door car that was manufactured by the Plymouth division of the Chrysler Corporation from 1964-1974.The first-generation Barracuda, a fastback A-body coupe based on the Plymouth Valiant, had a distinctive wraparound back glass and was available from 1964-1966.The...

 and the Dodge Dart

Dodge Dart

The Dodge Dart is an automobile built by the Dodge division of the Chrysler Corporation from 1960-1976 in North America, with production extended to later years in various other markets. The Dart was introduced as a lower-priced, shorter wheelbase, full-size Dodge in 1960 and 1961, became a...

 since neither Ford nor Plymouth/Dodge had a such a limit.