Smog Pump Plugs?
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Smog Pump Plugs?
Hey guys!!! I have a 1996 Ford F-250 XLT HD with the 7.5 liter 460 in it. I am in the process of removing the smog pump and thermactor air system and I am going to plug off the back of the heads where the tubes connect to. My question is, what size freeze, or expansion plugs do I need, or is there threads there where I could put a bolt in there? I am putting headers on there that are compatible with the egr system, but not the smog system. I know the tubes run to each exhaust manifold so I have to get rid of all the smog system. Any help guys? Thanks!
pedant
Joined: Jan 2008
Posts: 23,576
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From: EXTREME southwest CT
If the thermactor port size is the same as the carbureted trucks the freeze plug is .666".
I get them at NAPA and have posted the posted the part number before but don't know it off the top of my head.
I get them at NAPA and have posted the posted the part number before but don't know it off the top of my head.
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Joined: Feb 2014
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