1958 Impalas were the first muscle car.
Impalas had three rear taillights on each side.
The 1958 Chevy Impala was the top level option on the Bel Air line.
1958 Chevrolet Impalas had curved styling unique only to its year of production.
1958 Impalas had a 315 hp V8 engine option.
- In 1959 the Impala became its own model and was offered in both 2 and 4 door versions.
1959 Impalas were Chevy's best selling auto.
1959 Chevrolet Impalas became wider and longer and also sat lower to the ground.
The 1959 Chevy Impala had large tailfins, bat wing rear fenders and cat-eye taillights.
1959 Chevrolet Impalas had the option of fuel injected 283 V8 engines.
1960 Impalas had toned down styling changes and fuel injection was no longer an option.
1960 Impalas were the best selling U.S. vehicle - a distinction the car held for a decade.
1961 Impalas were the only year that two door hardtops and sedans were produced.
1961 Impalas had the tail fins eliminated.
1961 Chevy Impalas had the Super Sport SS option which included special body and trim, power steering & brakes, console for the floor shift and a tachometer on the steering column.
The SS package was standard with the 409 but an option with the 348 engine - the SS was considered the first true production muscle car.
1961 Impalas were the first Chevy's with the 409 V8 engine - which produced 360-425 hp.
1961 Impalas with the 409 engine came solely with a 4 speed manual transmission - only 142 of the Impala SS 409 were produced.
In addition to the 409, there were three 348 V8 engine options ranging from 305 to 350 hp.
1962 Impalas had redesigned styling and the 409 had new cylinder heads and camshafts.
1962 Impalas with a Carter AFB 4 barrel carb could achieve the magical one hp per cubic inch.
In 1962 the SS became an appearance package on the Impala - previously standard upgrades could be added individually however.
- In 1962 the Super Sport SS came in either hardtop coupes or convertible coupes.
- 1962 Chevy Impalas were the first year to have bucket seats available.
1963 Impala SS's with the 409 had the option of a powerglide automatic transmission.
1963 Impalas could add two four barrel carburetors and achieve 425 horsepower.
The Z11 engine was introduced in 1963 and rated at 430 hp - but actually produced 500 hp.
Only 55 Impalas received the Z11 engine and its production did not continue into 1964.
In 1964 Impala SS's became their own series.
1965 Chevrolet Impalas were redesigned with curved side glass.
1965 saw the introduction of the Impala Caprice with wood grained dash, specialty door handles and V8 engine standard.
The 409 option was no longer available after the first part of the 1965 Impala model year - it was replaced by the Mark IV 396 cubic inch V8.
Although Chevy's top seller, the 1966 Impala faced difficult times and reduced sales as the Caprice was no longer part of the Impala line.
In 1966 the Impala's six round taillights were replaced with rectangular lights, the front end was larger and a two door caprice was available.
In 1966 the Impala had the option of a larger 427 engine which could produce up to 425 hp.
1966 Impalas with the 427 were available with a 4 speed high performance manual transmission.
From 1958 to 1966 a record 13 million Chevrolet Impalas were sold.
1967 Chevy Impalas were redesigned and the body curves became bolder.
1967 Impalas had collapsing steering columns, side marker lights, dual master cylinder brakes and ignition switch illumination.
1967 Impala sales dropped further as the SS became less distinguishable from the base Impala.
1967 Chevrolet Impalas had only two engine options - a 325 hp engine and a 385 hp engine.
1967 Chevy Impala SS 427's were introduced and those cars received a domed hood.
1968 Chevrolet Impalas had the emblems on the rear quarter panels eliminated and no longer had speaker grills in the rear seats.
In 1968 the SS again became an option on the Impala convertible, hardtop coupe and custom coupe - less than 6% chose the option.
1968 Chevy Impalas had bulging front fenders, hideaway headlights and vent windows were replaced by full view glass windows.
1968 Impalas had safety belts standard.
1969 Impalas were only available as the Z24 with a 427 cubic inch V8 engine.
1969 Impalas had front disc brakes standard.
1969 Impalas were the last year for the SS model - it would not return for nearly 3 decades.