460 spark plugs
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Senior User
Joined: Dec 2003
Posts: 439
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From: Sussex
460 spark plugs
I am pretty sure i bought a truck with a 460. The truck came with a 351M. I know the motor was swapped. I am told that it is a 460 and so far, it all checks out except for the plugs.When I went to chage the spark plugs, the ones I took out were different then what I bought. It seems the right spark plugs are the small ones. My heads take the big fat ones. Can anybody explain this? Are these aftermarket heads.
Post Fiend
Joined: Oct 2003
Posts: 9,176
Likes: 4
From: Western Central NV
I'm not sure but I have never seen big plugs as you call them in any late models, so my guess is they are like late 60s, maybe early 70s the small plugs came in I think early 70s. Someone correct me if I'm incorrect.
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