The 1970 Plymouth Barracuda (440 6-BBL) is a third generation high-performance pony car manufactured by Plymouth from September 1969 to October 1970.
Fitted with Chrysler's RB (Raised Block) series of engines, the last developed version of the block, its cast-iron block has a bore of 4.32 inches (109.7 mm), giving it an overall displacement of 440 cubic inches (7.2 litres).
On top of being the largest displacement engine offered with the Barracuda from 1970 to 1973, it was fitted with three two-barrel Holley carburettors, dubbed the "6-Barrel" (6-BBL) in Plymouth models and "Six-Pack" in Dodge models.
The engine was offered as the highest performance option for the Barracuda in 1970, following the popularity of the 440 in other Dodge models, but its power was slightly reduced in 1971 to meet increasingly restrictive emission regulations, and was dropped from the Barracuda lineup in 1972.
Both the 440 6-Barrel and the 426 Hemi were on sale for the same period from 1970 to 1971, and weren't offered from 1973 to 1974.
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