Will spark plugs from a 289 fit in a 302?

[ryan_289]

I have a set of spark plugs for my 66 mustang 289 sitting in a drawer at the house. WIll these plugs work for my 76 bronco with a 302? What gap should I be running on a stock engine?

 

[bronko69er]

I can say that my '65 289 and my '69 302 took the make plugs.
IIRC the gap is .035" but somone will correct me if I'm wrong.

 

[66Bronco]

Yes, the plugs will work. As for gap can't remember. I thought it was .032
but you'd better confirm that.

-Terry

I have a set of spark plugs for my 66 mustang 289 sitting in a drawer at the house. WIll these plugs work for my 76 bronco with a 302? What gap should I be running on a stock engine?

 

[Skiddy]

Yes, the plugs will work. As for gap can't remember. I thought it was .032
but you'd better confirm that.

-Terry

I think the gap is .032-.035 but you better confirm that too%) ;D

 

[NYLES]

lets just vote that we all think its .032 ill look in my book when i get home for ya! but .032 sounds right.

 

[wildbill]

The 66 has a bf42 set at .035 and the 76 will use a arf42 set at .044 I think this is the little one dont remember. Bill %) ;D

 

[bronko69er]

In reality, .003" (.032-.035) is too small to make a noticable difference. I mean we're talking about the dia. of a hair from the nether regions.......
There will probably be at least .010" gap variation in the tab just due to it not being parallel to the electrode face.

 

[stevew]

No they won't fit . Electronic ignition plugs are smaller diameter . The change came with the Duraspark ignition . Pull one of your '76 plugs , the difference is obvious ... assuming your '76 has the original engine .