The 1985 442's were equipped with an 8.5" GM corporate differential and all were equipped with 3.73:1 ring and pinion final drive gears. 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 4-4-2'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 180hp/240lb•ft torque.
This Olds 442 is one of those 3000 sold in 1985 and is considered to be a time capsule. with only 22000 original miles on this 442 it still retains its original tires, paint, belts, hoses, interior and drive train.It is privately owned and shown at local car shows. This car is located in Ohio. You are welcome to come and inspect this car there are no disappointments with this car. Please contact me at 636-980-7588 with any questions. thank you.