Despite the Brazilian models of the Chevrolet Chevette featuring OHC heads on both the 1.4L and 1.6L engines, and even the later short-lived 1.0L engine, in some countries the smallest engines ranging from 1.0L to 1.2L in the European Opel Kadett C and 1.4L in the American Chevette and the Isuzu Gemini more often resorted to OHV valvetrains, with the 1.6L engine being available on both layouts while the sportier models from Isuzu with a larger 1.8L engine of which the Diesel version also derived was only fitted with OHC heads. A derivative made in Argentina from '74 to '78 and named Opel K-180 featured a 1.8L engine based on the 4-cylinder 2.5L Chevrolet 153 engine, maybe conceptually closer to what a true-blooded redneck would expect back in the day, and since it would be supposed to require a smaller investment than upgrade the tooling of some GM engine plants in overseas branches compared to OHC engines it may sometimes seem quite surprising neither the Brazilian or American Chevettes featured at least one derivative of the 153 engine. Sure the belt-driven OHC cylinder head featured on the Chevette being more modern charged its toll, yet the cast-iron block and head were eventually cost-effective in a comparison to the usage of aluminium alloys in the Volkswagen Beetle engine which still resorted to a gear-driven OHV valvetrain, while the stereottypically-American front-engine rear-wheel drive layout of the Chevette giving it a more traditional aspect eventually rendered it easier to cater to a different set of preferences and regulations according to the markets where it was officially available, in contrast to a somewhat rigid layout of the Volkswagen Beetle with its rear engine which went out of favor as quickly as the Japanese automotive industry expanded its presence on many regions where the Beetle used to be the benchmark for compact cars pertaining to affordability and ease of maintenance.
It might be quite unfair to compare the Chevette and the Beetle, yet both used to be references among the compact cars in Brazil and still have their fanbases locally, while on a worldwide basis it's harder to point out the Chevette or its stablemates as if they were as much of a cultural icon as the Beetle became, while the consolidated competition from Japanese automakers eventually overshadowed the Chevette in the United States where it was supposed to be a serious world-class option for those on the market for a small car from an American manufacturer. Despite an even shorter production run in Europe from '73 to '79 for the Opel Kadett C, with front-wheel drive being consolidadet as the the standard for its segment in Western Europe, while the Volkswagen Beetle soldiered on through a proportionately much longer time from its availability for the civilian market in '45 until a phaseout of German manufacturing in '78 even facing the Chevette/Kadett C and their stablemates among other contenders, the Beetle was still supplied from Mexico to Europe as a captive import until '85. Maybe timing was not the best for the Chevette to be taken more seriously as a contender for the Volkswagen Beetle, as its more conservative dictated it should follow some trends the Beetle would be exempted due to its iconic status...
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