
The 1956 300B was fairly similar externally to the 1955, distinguished by a new tailfin treatment, but with larger engines, two models of 354 cu in (5.8 L) Hemi V8 with either 340 or 355 hp (254 or 265 kW). Only 1,102 were sold. Performance was a little better than the previous year's, being measured at almost 140 mph (225 km/h). A 6.17 ratio rear end was also added to the options. Front leg room was 44.6 inches. New was the Highway Hi-Fi Phonograph Player. If you think driving and texting is bad today, just imagine driving and spinning vinyl! With the optional 355 hp 354 cu.in engine, the 300B became the first American car to produce 1 horsepower per cubic inch, besting Chevrolet with their fuel-injected 283 cu in (4.6 L) by one year.