The performance model was the R/T (Road/Track), with a 383 CID Magnum V8, rated at 335 bhp (249.8 kW); 300 bhp (223.7 kW) for 1971, due to a drop in compression. The standard transmission was a 3-speed manual. Optional R/T engines were the 375 bhp (279.6 kW) 440 cu in (7.2 L) Magnum, the 390 bhp (290.8 kW) 440 CID Six-Pack and the 425 bhp (316.9 kW) 426 cu in (7.0 L) Hemi. The R/T was available in either the hardtop or convertible. For 1970 only, base hardtop and R/T hardtop models could be ordered with the more luxurious SE specification, which included leather seats, a vinyl roof, a smaller 'formal' rear window, and an overhead interior console that contained three warning lights (door ajar, low fuel, and seatbelts). The Challenger R/T came with a Rallye instrument cluster that included a 150 mph (240 km/h) speedometer, an 8,000 rpm tachometer, 1972–1974 tachometer went to 7,000 rpm and an oil pressure gauge. In 1973, the R/T badging was dropped and these models were called "Rallye", although they were never badged as such. The shaker hood scoop was not available after 1971.
Testimonial From 1971 Challenger RT Custom