atsrmf
Jun 07, 2018Explorer
1986 vs 1987 Ford 460
If you have a 1987 motorhome with a Ford 460 driveline, make sure you know what year the driveline is before you order engine parts. It is not uncommon for 1987 motorhomes to have a driveline that is a year older, so verify first.
With Ford, if the distributor rotor is like a finger, the engine is a 1986. If you replace the fuel pump/sending until with an '87, the gas gauge will read empty when full if the engine is a 1986.
In 1986 the sending unit was 75 ohms empty, 10 ohms full. In 1987 it changed to 10 ohms empty and 165 ohms full, and the unit looks the same and will fit. I bought mine with the wrong unit already installed and finally figured out what was wrong!
I plan to keep the wrong unit as an emergency spare after I replace it.
With Ford, if the distributor rotor is like a finger, the engine is a 1986. If you replace the fuel pump/sending until with an '87, the gas gauge will read empty when full if the engine is a 1986.
In 1986 the sending unit was 75 ohms empty, 10 ohms full. In 1987 it changed to 10 ohms empty and 165 ohms full, and the unit looks the same and will fit. I bought mine with the wrong unit already installed and finally figured out what was wrong!
I plan to keep the wrong unit as an emergency spare after I replace it.