I'm finding lots of good info and advice here so I'll ask another question about the build I'm getting ready to do. I was lucky to find a low miles 94 EFI engine that really didn't need a rebuild but I will be going trough it anyway before putting it in a M715 military 5/4 ton with many other mods to the truck. My question this time is about the head. I have seen a lot here about using 240 heads to get the compression up a little more and about installing screw in rocker studs. My 94 head is in very good shape and it will take very little grinding on the seats and valves to get them back into shape and it also uses pedestal rocker studs. The camber size is near what the 240 is and these heads are much more plentiful so I think I will go with it. Are there any problems with them that you guys know of or any reason I should look for something else? Buy the way I am of coarse using the EFI exhaust manifolds along with a Offenhouser DP intake. And last but not least what the hell size are those air tube port holes in the intake ports. Best I can tell they are not 3/8 or 1/2in. Would like to find some plugs for them but it can weld up the old tube fittings if necessary.

 

I would stay with the head you have (EFI). Same chamber volume. You may have to retard the spark a bit depending on which distributor you use. Ford makes a plug for the ports - got some but don't have the part #. Check your friendly Ford dealer.
Don't let the engine overheat as it may be prone to head cracking.

 

Well went to the ford dealer and asked about the plugs for the air injection and they looked at me like I was from Mars. Does anyone out there have a part #?

 

https://fordsix.com/viewtopic.php?f=2&t=69826

 

Thanks for posting this. I read trough it and found the size to be 9/16th by 18. That's an odd size and why I didn't identify it before. I went to a hardware store that specializes in all types of bolts and got some grade 8's 2in long in order to have enough meat to chuck them in my lathe after cutting of the head and cut a tapper on the end and cut of some of the treads off in order to duplicate the tip of the air tube and then cut them off leaving about 1/2 in of treads and cut a slot in the top like a flat screw. Put them in with red locktight and impact driver. Thanks for the lead on the size.

 

good on ya! wish I could fit a lathe in my garage. of course if I could, I'd try to cram a Bridgeport vert mill too haha. Love making my own stuff. that way you know it's done right, every time. glad you got her taken care of.