What is the right Spark Plug for 65 F600?

[okhunt]

I found a post on spark Plugs for a 65 F600 with 330HD to be Motocraft SP420.
I bought a set and when I went to change them I found the old ones where SP3xx types. I can remeber what the last two digits were. It is a little shorter than the SP420. Which one is the right type? thanks

[rbaker6336]

I came up with motorcraft BSF3F4

[NumberDummy]

Originally Posted by okhunt

I found a post on spark Plugs for a 65 F600 with 330HD to be Motocraft SP420.
I bought a set and when I went to change them I found the old ones where SP3xx types. I can remeber what the last two digits were. It is a little shorter than the SP420. Which one is the right type? thanks

Parts catalog sez:

C3TZ-12405-A .. Spark Plug (Motorcraft BTF-31)

18mm / 13/16" hex tapered seal / .028 - .032 gap setting

Fits: All 1964/72 330/361/391 engines.

For future reference, here's the rest of the tune up parts.

B8Q-12171-A .. Point Set (Motorcraft DP-12)

B7A-12200-A .. Rotor (Motorcraft DR-5)

C9AZ-12300-A .. Condenser (Motorcraft DC-13A)

B7AZ-12106-A .. Distributor Cap (Motorcraft DH-146)

D2PZ-12151-A .. Breaker Plate (Motorcraft DB-187-B) This is a one piece plate, it replaced the original two piece plate.

C5AZ-12192-F .. Primary Spring (Motorcraft MS-472)

C5AZ-12192-A .. Secondary Spring (Motorcraft MS-467)

C5AZ-12210-B .. Distributor Cam (Motorcraft DF-343)

C1VF-12216-A .. Primary Wire (Motorcraft DW-12)

C5AZ-12370-A .. Vacuum Advance (Motorcraft DD-190)

D4PZ-12259-TR .. Spark Plug Wire Set (Motorcraft WR-3820-CR)