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The Chevrolet "big-block" engine is a term for a series of large-displacement, naturally-aspirated, 90°, overhead valve, gasoline-powered, V8 engines; that were developed and produced by the Chevrolet Division of General Motors, from the 1950s until present.
The Chevrolet Impala (fourth generation) are full-size automobiles produced by Chevrolet for the 1965 through 1970 model years. The 1965 Impala was all new, while the 1967 and 1969 models featured new bodies on the same redesigned perimeter frame introduced on the 1965 models.
That engine was the 427 CID V8 that produced 390 horsepower, so Impalas with the SS package were known as the Impala SS 427. Unfortunately, the model had its worst year ever – only 2,455 were built – and the option package would be discontinued after the model year.
Jun 19, 2018 · While most Impalas and Impala Super Sports used a tachometer with a 5,000-rpm red line, the L36 engines had a 5,500-rpm red line, and the L72s had a 6,000-rpm red line. Since the SS427 was a high-performance upgrade to the Impala, the interior included all Super Sport features.
Sep 24, 2018 · In 1968, the SS427 offered a choice of L36 (385hp) or L72 (425hp) big-blocks with chromed rocker covers, air cleaner and oil filler, and included heavy-duty suspension, a special domed hood and fender treatment with chromed faux air extractor gills, and heavy-duty suspension. The 425hp V-8 cost $542.45.
- Jeff Koch
Dec 1, 2010 · When equipped with the RPO Z11 option, Impala SS models were built with a special 427cid engine that used a first-ever, for Chevrolet, cowl induction intake. In 1962, the SS option could be ordered on any two-door coupe or convertible, and with any engine in the GM lineup.
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Mar 15, 2016 · This left only two new Chevys to finish the race — 1960 Grand National champ Rex White’s number 4 Chevy, and Johnny Rutherford in Smokey Yunick’s number 13 Impala, which finally finished ninth, four laps behind winner Tiny Lund. But the 100-mile qualifier was to be the “Mystery V8’s” swan song.
