Motor identification - Vintage Mustang Forums
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post #1 of 43 (permalink) Old 11-23-2016, 04:30 PM Thread Starter
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Motor identification

Can anyone tell me what engine this is? I just purchased the car. 67 mustang fastback. Had it in the shop having the clutch looked at and the mechanic says its not the original motor. Not even a 67. Any idea how I i.d. this?
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post #2 of 43 (permalink) Old 11-23-2016, 04:40 PM
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Looks like a small-block Ford to me. Probably a 289 but you need to find the part casting number stamped on the block near starter. Should be something like this - C6AE-6015-C. I suspect the mechanic is thrown off by the after-market a/c compressor and the Chevy power-steering pump.

Here are some of the engine codes
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post #3 of 43 (permalink) Old 11-23-2016, 04:42 PM
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It has a 70-73 Alternator Bracket on it :-)
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post #4 of 43 (permalink) Old 11-23-2016, 06:39 PM
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It's a V8


Without knowing the casting number, it could be a 221, 260, 289 or a 302. It's too narrow to be a 351W.

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post #5 of 43 (permalink) Old 11-23-2016, 06:51 PM
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There is a pad on the block on the cylinder head mounting surface. Drivers side. The engine assembly date is stamped there.
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post #6 of 43 (permalink) Old 11-23-2016, 07:39 PM
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Can anyone tell me what engine this is? I just purchased the car. 67 mustang fastback. Had it in the shop having the clutch looked at and the mechanic says its not the original motor. Not even a 67. Any idea how I i.d. this?
The real answer is your mechanic probably doesn't know jack crap. He probably doesn't know an engineering number from a phone number. Or a casting date from his first date. But you should . Once you know those things about your engine, you will know enough to see if it is original or from another year. So search here for where the casting number and dates codes are found ( near the starter) and get back to us.
post #7 of 43 (permalink) Old 11-23-2016, 09:13 PM
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Okay crawl under car, right above the starter on the block next to oil pan. You will see a casting number. Write it down. Anything with a C in front of it is a 60's block anything with a D in front of number is a 70's block. The 1st number is the year. So a "C6"block would be 66 or a "D2" block would be 72.
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post #8 of 43 (permalink) Old 11-23-2016, 09:13 PM
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Can anyone tell me what engine this is? I just purchased the car. 67 mustang fastback. Had it in the shop having the clutch looked at and the mechanic says its not the original motor. Not even a 67. Any idea how I i.d. this?
Looks like a 289 or 302. If you can, pull a valve cover. Stamped inside the head will be a casting number, also in smaller stamps, a date code. Let us know what they say. The engine may have been pieced together so you can never be certain.

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post #9 of 43 (permalink) Old 11-24-2016, 01:51 PM
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Looks like a 289 or 302. If you can, pull a valve cover. Stamped inside the head will be a casting number, also in smaller stamps, a date code. Let us know what they say. The engine may have been pieced together so you can never be certain.
SBF head casting numbers are on the underside by the intake ports and not visible from the top.

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post #10 of 43 (permalink) Old 11-24-2016, 04:17 PM
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Had it in the shop having the clutch looked at and the mechanic says its not the original motor. Not even a 67. Any idea how I i.d. this?
You can easily read the engineering code on the intake manifold. The one above the starter is a real pain. Better photos, taken up close, will help.

Oh, about that mechanic- He says it's not original, but not what year it is. He is useless. Why does he not think it's a 67, and most importantly, what year does he think it is?

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post #11 of 43 (permalink) Old 11-27-2016, 01:55 PM Thread Starter
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First off, please don't rip my mechanic. He is vey knowledgeable and helped me a great deal. I took the car to him because he has a 66 fastback and he is one of 3 shops that is qualified to do the "out of province" inspection needed for the me to register and insure the car in BC. He looked the other way on a few things for it to pass. The wipers for example. They kinda work. The passenger side falls off but he knows that I'm only a fair weather cruiser and wasn't going to fail me on that. In other conversation, he mentioned the motor wasn't original 67. I was suprised about that. He said it was probably out of a 71 or 72. I think he said out of a Lemans? I don't remember. At any rate, he wasn't hired to tell me exactly what motor it is. Simply to do the inspection. Oh... the throttle linkage was messed up. I only had 1/2 throttle when I brought it to him. I had no idea. I figured stock 289 was kinda gutless. Well, he fixed that. Didn't charge me. What a difference!

I jacked the car up and crawled under. I can find that # by the starter. I guess I'll have to remove the starter to see it.

Thanks for the info. I know where to look now. I have other things I need to do first (I'm sure I'll be posting for input) before filling my curiosity. When I find out, I'll post here. For those (like me) that need closure.

Ttfn
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post #12 of 43 (permalink) Old 11-27-2016, 03:48 PM
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He said it was probably out of a 71 or 72. I think he said out of a Lemans? I don't remember.
That's definitely not a Pontiac engine.
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post #13 of 43 (permalink) Old 11-27-2016, 04:45 PM
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Its easier to look on the intake, although an intake, heads, exhaust manifolds could be swapped...so it is just one of many clues to investigate, but its a good place to start since it is so easily accessible.

Here is a pic of the casting number and date codes off of a 1971 Cleveland intake manifold. The numbers on your intake should be in about the same place. If you can take a pic and post here we will be able to help you with the details regarding the engine (or at least the intake).

You can find the casting number and the date code on top of the intake behind the carburetor.
DSC_0039

They look like this. I use chalk to help them stand out. 1K21 is the date stamp, and D1AE-9425-DA is the Ford engineering number (or Ford part number). "D1" = 1971. 1K21 translates into November 21, 1971.
DSC_0040

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post #14 of 43 (permalink) Old 11-27-2016, 06:48 PM
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It's also not a 71 or 72. The year ends in 9. Take the starter off.
post #15 of 43 (permalink) Old 11-27-2016, 08:28 PM Thread Starter
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Here is what I have on intake.

One says 15426378

Other says 6179
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