The battery size for a 1987 Grand Marquis is a 4.6L. It is important to always check to make sure you have the correct size battery when you are replacing you battery..
a 1999 ford experdition battery
A ( 1981 ) Ford Escort takes a BCI group size ( 58 ) battery
The battery group is 65N for a 2003 Ford Windstar
group size 75
27F
36R
BCI code 40R type battery
BCI group size 58 , according to ford parts . com
Group 65.
BCI group size ( 58 )
A 2002 Jeep Grand Cherokee uses a group 65 battery with 750 cold cranking amps.
The optional size battery was the Motorcraft BXT-65-650 battery ( that's BCI group size 65 , 650 cold cranking amps ) In a 1997 Ford Explorer for the 4.0 liter OHV and the 4.0 liter SOHC engines it was the optional battery , and the standard battery if you had the 5.0 liter V8