1962 Pontiac Catalina 421 Super-Duty - Royal Retrospective
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One look under the hood of the Bobcat Catalina and you can easily differentiate this big-car from its factory siblings. Royal used this specific air-cleaner setup on its Tri-Power Bobcats, and progressive linkage on the carburetors, three years before a similar system was introduced by the factory on the '65 GTO. In addition, the Bobcat Catalina's custom "tune" consisted of cc'ing the heads and equalizing the combustion chamber volume; milling the heads and installing thinner head gaskets to raise compression; truing the valvespring installed heights; adding locknuts for the rockers; installing blocked heat-riser intake gaskets to cool the intake manifold for a denser charge and screwing in richer jets and colder heat range spark plugs, and recurving the distributor with a faster advance to complement the other upgrades. View Related Article
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