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1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1966 Mustang => Topic started by: 21.04 on December 23, 2024, 08:23:37 PM

Title: Correct style of BF32 spark plugs
Post by: 21.04 on December 23, 2024, 08:23:37 PM

I have a few dozen NOS BF32 plugs and have noticed two variations:  one has 5 ribs towards the tip of the plugs and other have 3 ribs.  Attached is a photo of the two variations.  Both are Autolite plugs and have star logos.  Was there a version of these that were used on the assembly line for a July 1,66 projected build HP Conv with engine assembly of 2/9/66? 

Title: Re: Correct style of BF32 spark plugs
Post by: Bob Gaines on December 23, 2024, 10:32:49 PM

Quote from: 21.04 on December 23, 2024, 08:23:37 PM

I have a few dozen NOS BF32 plugs and have noticed two variations:  one has 5 ribs towards the tip of the plugs and other have 3 ribs.  Attached is a photo of the two variations.  Both are Autolite plugs and have star logos.  Was there a version of these that were used on the assembly line for a July 1,66 projected build HP Conv with engine assembly of 2/9/66?

3 rib is much earlier then 1965. You want the 5 rib for 65 and up.

Title: Re: Correct style of BF32 spark plugs
Post by: 21.04 on December 24, 2024, 11:25:19 AM

Thanks Bob!