what size plugs
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Senior User
Joined: Nov 2006
Posts: 130
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what size plugs
My somg pump is going bye bye next week end and was wordering what size plugs i need 2 get 2 plug off wher the tubes go into the back of the heads. it's a '92 f-250 with 460 7.5l auto E4OD
Senior User
Joined: May 2004
Posts: 194
Likes: 1
From: Waterford Michigan
Go to your local machine shop and ask them for the accessory inserts for your heads. the hols used for the smog tube are the same ones used to mount your front accessories they just have a set of double threaded plugs in those holes (inside/outsid). if you ask they can also tell you what the bolt size is and the thread pitch so you can pick up a tap to clean all the crap out of the threads so the plugs will go in nice and easy.
