code THM 200-4R transmission (as did the 1983–84 Hurst/Olds). Both 1986 and 1987 4-4-2 used the KZF code THM 200-4R. The KZF removed much of the shift harshness of the original OZ coded transmissions, but were still firmer than the run-of-the-mill overdrive transmissions used in the rest of Oldsmobile's lineup. Sixth generation The 4-4-2 option was revived on the Quad 4-4-2 front-wheel drive 1990–1991 Cutlass Calais. This model used a 2.3 L LG0 Quad-4 four-cylinder engine with four valves per cylinder and two camshafts. The engine was tuned with higher output camshafts which produced more top end power at the expense of idle quality. It used a single exhaust with a dual tipped muffler and produced with a five-speed manual transmission. This version of the 4-4-2 also played upon the "W-30" option code used in past versions of the 4-4-2, the exception being that this model used the option code "W-40". A low production, late 1991 model year version used the option code "W-41"; the key differences of the "W-41" package were a engine with a differently geared five-speed transmission. This 4-4-2 model lasted just two years. Production totals: 1990 "W-40" = 2,629 1991 "W-40" = 1,160 1991 "W-41" = 204 GM literature referred to the 1992 and 1993 Oldsmobile Achieva SCX as a 4--42, the last time the designation was used. The Achieva SCX used the same W41 drive train as the very limited production 1991 4-4-2-W41. Engines 1964-1966 Oldsmobile 330 CID 4-barrel V8 1965-67 Oldsmobile 400 CID 4-barrel V8 (4.000 in (101.6 mm) bore and 3.975 in (101.0 mm) stroke) 1968-69 Oldsmobile 400 CID 4-barrel V8 (3.87 in (98 mm) bore and 4.25 in (108 mm) stroke) 290 hp 1970 Oldsmobile 455 CID 4-barrel V8 (4.126 in (104.8 mm) bore and 4.25 in (108 mm) stroke) 370 hp 1971 Oldsmobile 455 CID 4-barrel V8 (4.126 in (104.8 mm) bore and 4.25 in (108 mm) stroke) 340 hp; W30 350 hp 1972 L32 350 CID 2-barrel V8, (160 hp and in 1972) [H or J in VIN] 1972 L34 350 CID 4-barrel V8, (180 hp and in 1972) [K in VIN] 1972 L34 350 CID 4-barrel V8 w/N10 dual exhaust, (200 hp and in 1972) [M in VIN] 1972 W30 455 CID 4-barrel V8, (300 hp and in 1972) [X in VIN w/ TH400 and M20] 1972 L75 455 CID 4-barrel V8, (250 hp w/ TH400 and in 1972)