The W-30 (that had in 1972) had become a trim package. The L77 "V" code 455 was there, but only with the 4-speed wide-ratio M-20 transmission. 1973 was also the last year of the 4-speed manual transmission in the Olds "A" body. The L77 "V" code produced 270 net HP, the L75 "U" code 455 AT produced , while the "K" code 350 single exhaust produced and the "M" code 350 with duals produced . Positraction rear ends, axle ratios, gauges, Super Stock wheels, HD cooling and many sport type options were available, but had to be ordered. The L77 "V" code engine was also available in the Hurst/Olds without A/C, code W-46, the W-45 L75 "U" code was standard with A/C. Both 455s used the Turbo Hydra-matic 400 transmission, while the 350 was mated to the Turbo 350.