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The base 455 was rated at 340 hp (254 kW), with the W-30 achieving a rating of 350 hp (261 kW). The W-27 option was downgraded to an aluminum cover for the cast iron differential housing. 1971 Oldsmobile 442 W30 in Antique Jade Green. The 1971 4-4-2 was available in a hardtop coupe and convertible body type.
1971 Dodge Challenger 383; 1971 Dodge Charger SE 440 4-barrel; 1971 Ford Torino GT 429 4-barrel; 1971 Oldsmobile 442 W30 convertible 4-speed (1 of 33) 1971 Mercury Capri 1.6; 1971 Mercury Cyclone 351; 1972 Buick Centurion 455 4-barrel; 1972 Buick Riviera GS 455; 1973 Buick Century 455 Gran Sport (Stage One) 1973 Plymouth Cuda 340; 1973 ...
Also available was the L77 V code 455 with 270 horsepower (200 kW) available only without air conditioning. Although Pontiac's SD 455 cubic-inch engine lasted one more year with 290 horsepower (220 kW), Oldsmobile's high performance 455 engine would only last one more year culminating with the L76 optioned 455 W-30 Hurst/Olds in 1974.
All Cutlass models came standard with front disc brakes [16] The standard engine was a 180-horsepower (134 kW) 350 Rocket V8 (K VIN engine code), a 200-horsepower (149 kW) 350 Rocket V8 with dual exhaust (M code), a 250-horsepower (186 kW) 455 Rocket V8 (U code, or L75), and a 270-horsepower (201 kW) 455 V8, with a hotter cam and W30-style ...
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An early (1968) red-painted Rocket 455 in a Delmont 88. The 425's stroke was lengthened to 4.25 in (108 mm) to achieve 454.6 cu in (7.4 L; 7,450 cc) to create the Rocket 455 for 1968. It kept the retired 425's 4.126 in (104.8 mm) bore to produce between 275 and 400 hp (205 and 298 kW). Initially the paint was red, except for metallic blue in ...
The 1971 455 HO was rated at 335 hp (250 kW) at 4,800 rpm and 480 lb⋅ft (651 N⋅m) of torque at 3,200 rpm . The 1971 455 HO was available in the Firebird (optional in Formula; standard in Trans Am), the GTO (standard with "The Judge" package), and the 2-door LeMans, LeMans T-37 (including GT-37), and LeMans Sport.
The '74 Stage 1 455 was only available with the Turbo 400 automatic and detuned to 245 hp (183 kW). This engine was also offered on other Buicks in 1974 including the Riviera, LeSabre and Electra. 1973-1975 Oldsmobile Cutlass Hurst/Olds W-30 — These were built using 455 cid V8 engines in the W-30 trim.