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Bill or someone else who knows,

The AFR heads include 2 injector plugs to plug two of the holes on the ends of the AFR heads. These serve as thread adaptors so the accessory bolts will work in the large holes they go in. Unfortunately, there are 4 of these holes (one on each end of each head) that might need plugs.

My question is this. Do you know if these are really plugs (the holes look blind to me)? Are they required? What about the other holes on the ends that aren't used for anything? Can I just leave them alone or should I put set screws in them, or plugs or something?

TIA

Phil

'65 Convertible (with many mods.)
http://www.blueriver.net/~finite/Pony.htm
 

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I can't help with an answer, but I'm interested in other replies. I'm getting a 5.0 based engine from a builder and its coming with AFR heads; so I may be having the same questions.

66 Fastback
85 GT Hatchback
67 Coupe
82 GT Hatchback
 

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Phil,

I put the 2 plugs supplied by AFR in the holes, I got two plugs from Ford for the other 2 holes. I think you need the plugs. The heads were designed as replacements for the EGR equiped heads, the EGR tube would have gone in the back
two holes, the plugs would have gone in the front. Since we don't have a EGR setup, you need 2 more plugs.

Regards,
BillGear

1966 Mustang Coupe, 302 custom roller cam, holley 650dp,http://www.289mustang.com
http://www.289mustang.com/images/vmfcar.jpg
 
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