History: I-6 Nash and AMC Engines (1956 -1991)

The company designed an entirely new six-cylinder with a short stroke and seven main bearing crankshaft for 1964. This design was produced in various forms through 2006. The 232 cid “Torque Command” in-line six was AMC’s first modern six-cylinder engine.

To commemorate the engine’s May 1964 introduction, 2,520 “Typhoon” cars were made on the Rambler Classic hardtop body.  Each featured the 145 hp 8.5:1 compression ratio engine, Solar Yellow body paint, a Classic Black roof, and a distinctive “Typhoon” script in place of the usual “Classic” name. All other AMC options (except engine options) were available.

The new engine replaced the Nash 195.6 cid OHV I6 in the Classic and Ambassador for the 1965 model year (this was also the first use of a six in the Ambassador since 1956). Road tests by Consumer Reports described the new powerplant as “a very smooth and quiet engine, which should give good performance.”

Both the 199 and 232 featured a 3.75″ bore, and either a 3.0″ or 3.5″ stroke. The 199 was discontinued in 1970; the 232 was offered alongside the 258 cid resulting from a 3.895″ stroke increase in a taller deck height block. The 258 was discontinued” in 1979.