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Old Jun 19, 2004 | 11:37 AM
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Question 5.0 HO Casting Number?

OK... I am cornfused I bought a 81 F100. The engine is not stock. Its a 5.0 HO but... This is where my cornfusion starts. The casting # is E0AE D3C. Now am I missing something or does this tell me I have a 1980 block? The reason I am cornfused is that I can't find any record of a HO motor being built in 1980. So why do I think this is a HO you ask... Because it uses the HO fireing order.

So what am I missing?
 

Last edited by tjsuperdave; Jun 19, 2004 at 11:38 AM. Reason: Illiteracy
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Old Jun 19, 2004 | 12:52 PM
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if it is a 302 the previous owner could have put in a cam for the HO and changed the fireing order. Otherwise it may be 351
 
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Old Jun 19, 2004 | 10:11 PM
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You must be careful with Ford casting numbers. They will bite you in the butt sometimes! If you have an EO casting # that simply means that it can't be any EARLIER than a 1980. The casting number COULD stay the same for several years after.
If your vehicle is older than any casting #, then you know the part has been changed. However it is normal to have a casting # older than the vehicle. It simply means Ford did not have any reason to change the mold on that particular part in question.
Ford casting numbers are not an exact science. I've found that out many times over!
 
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Old Jun 20, 2004 | 10:52 AM
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Do you have the engine identifaction tag? If you do on the top row left side is 7 digits. In the middle of the seven digits is the displacement sequence number. Example 300-380 is a 302 V8 381-399 is 351V8 and 850-891 is the 255V8. in the section below is a row of letters for the month built below that is numbers for the day in tens built and below that is numbers for the units.

Hope this helps
Dan
 
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Old Jun 22, 2004 | 05:37 AM
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Where on the engine would the ID tag be? Didn't even know there was such a critter.
 
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Old Jun 22, 2004 | 02:04 PM
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Most engines is a sticker on valve cover. That is where it is on my 83 Mustang with the HO302.
 
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Old Jun 22, 2004 | 02:16 PM
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There is a sticker on one of the valve covers. I'll have to check that out
By chance does your 83 have an aluminum intake and a big motor caraft/holley carb?
 
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Old Jun 22, 2004 | 02:24 PM
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yes it does, valve covers are ribbed allum too.
 
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Old Jun 22, 2004 | 02:30 PM
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OK... It sounds like I have an old block that for some unknown reason someone morfed into a HO. Why would someone go through all that trouble?
 
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Old Jun 22, 2004 | 02:31 PM
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Hey ... Any chance you could snap some pics of your 83 and email them to me?
 
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Old Jun 22, 2004 | 02:35 PM
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ican try. what color is the block on yours? mine is grey
 
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Old Jun 22, 2004 | 02:37 PM
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The block on this thing is so covered with yuk I would have to say it is yuk colored : )
 
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Old Jun 22, 2004 | 02:43 PM
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does it seem to have good power? if you take the engine out and apart, look at rear main oil seal. ford made a running change in nov? 82 to one piece seal. my motor was built in august and still has two piece seal.
 
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Old Jun 22, 2004 | 02:54 PM
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Yeh... I had read that. I was kinda hoping I had the two pc so I could replace it without pulling the motor. Right now it leaks (perfusely). Is that really a word? Dont look like it when I type it. Hey I just changed my profile so you can get my email. If ya get a chance shoot me some pics.
 
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Old Jun 22, 2004 | 02:59 PM
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I will see what i can do she is under cover now. Maybe get some shots tomorow
Dan
 
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