150 H.P. and 250 Lb/Ft torque.
Why cant you put any 5.0 engine in your 1991 mercury grand marquis
If your Mercury Grand Marquis is a 1991 model or older . The 5.0 liter / 302 and the 5.8 liter / 351 has the distributor at the front of the engine The distributor rotor turns COUNTERCLOCKWISE
As far as I know , the 1991 Mercury Grand Marquis either had the 5.0 litre / 302 cubic inch V8 or the 5.8 litre / 351 cubic inch V8 engine . The 4.6 litre Single Over Head Cam ( SOHC ) engine was used in the Mercury Grand Marquis starting with the 1992 model year Firing order of the 5.0L which is the engine installed in the 1991 Mercury Grand Marquis is 1-5-4-2-6-3-7-8 rotor turns counterclockwise.
For a 1991 Mercury Grand Marquis : " regular " unleaded gasoline , 87 octane is used for both the 5.0 and 5.8
5 quarts with engine oil filter change , according to my Chilton book
The 1991 Mercury Marquis spark plug gap is .034. Most spark plugs will be pre-gapped by the spark plug manufacturer.
Who told you that you cannot install any 5.0? Of course you can with the proper modifications.
the fuse box on a 1991 ford grand marquis is located right under the steering wheel
The horsepower of a 1991 Chevrolet 454 cubic inch engine ranges between 240 horsepower and 350 horsepower the engine torque ranges between 700 pounds and 850 pounds.
Your local autozone can tell you. If they can't ask for spark plus for a 1988 Ford Thunderbird with a 5.0 engine.
It's in the tank.
According to my Chilton's Auto Repair Manual : For a 1991 Mercury Grand Marquis : Both the 5.0 liter / 302 and the 5.8 liter / 351 take : 4.0 U.S. quarts without filter 5.0 quarts with engine oil filter change