fordparts.com shows the 1967 Ford Mustang 390 cubic inch ( 6.4 liter )
spark plug gap as ( .035 inch )
According to one of Fords websites : For a 1967 Ford Galaxie , 6.4 liter / 390 cubic inch V8 engine : ( the spark plugs are gapped at .035 inch )
A 1968 Ford Galaxie 500 with a 390 engine should use a spark plug such as an E3 brand spark plug. This plug should have a tapered seat with 18mm threads.
.035 inch spark plug gap for a 390 V8 in a 1973 Ford truck ( according to www . motorcraft . com - no spaces )
.044 inch
When changing spark plugs on a car, it is important to have a diagram. For a 1969 Ford 390 V8, a person can find a spark plug diagram in the maintenance manual of the car.
Points .017 and spark plug .035
Ford uses Motorcraft Spark plugs on all there vehicles.
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
( .035 inch ) is the spark plug gap
The spark plug firing order is ( 1 - 5 - 4 - 2 - 6 - 3 - 7 - 8 ) The distributor rotor turns COUNTERCLOCKWISE The marked # 1 position on the distributor cap faces to the REAR and slightly towards the drivers side The engine cylinders / spark plug locations are numbered : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front For a Ford 390 cubic inch V8 engine
Yes there are freeze plug(S) on a ford 390. There is more then one on each side though I don't recall how many, I believe there are 6.
Check the local flea markets for Haines or Chiltons manuals. Anything large and Ford from that era will do. Pick-up, Galaxies, LTDs, Torino, etc. Say from 1963 - 1980. The spark plug wiring will be the same on any of their 390s. Good Luck. Great Engine!!!