1985-1987
Main article: Oldsmobile Cutlass Supreme
1986 Oldsmobile 442The 442 name was revived in 1985 on the rear-wheel drive G-body Oldsmobile Cutlass Supreme. The name was now defined as referring to the car's 4-speed 200r4 automatic transmission, 4-barrel carburetor, and 2 exhausts. This W42 model replaced the 1983 and 1984
Hurst/Olds model and used the same 5.0 L LG8 V8. The shifter was mounted on the floor in a console between the front seats, and the upgraded F41 suspension package was included. 3,000 were produced in the first year, and all were sold quickly. 4,273 were produced for 1986, and 4,208 were made in 1987.
The 1984
Hurst/Olds and 1985-87 442 were equipped with an 8.5" GM corporate differential usually with a 3:73 ring and pinion gear. Rather than using the weaker 7.5" rear differential found in the Monte Carlo SS, these models used the same stout unit found in the
Buick Grand National.
The 1983-84
Hurst/Olds and 1985-87 442's are distinguishable by there being a "9" as the engine code found in the 8th character of their VIN's. These were the only models to get the hotter VIN 9 307 cubic inch engine, and it was the only engine available. From 1983-1985, this engine was flat-tappet valvetrain, and rated at 180 hp/240 ft·lbf torque. In 1986, the 307 engine received a roller-camshaft valvetrain and new swirl-port heads to improve economy and low-end torque. HP dropped to 170, with torque climbing to 250. The 1985 442 used an OZ code THM 200-4R transmission.
hope this helps some. got it off wikipedia