64 1/2 260 needs rebuilt. Options or advice please - Page 2 - Vintage Mustang Forums
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post #16 of 20 (permalink) Old 02-05-2017, 01:24 AM Thread Starter
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Okay guys so here's what I'm going to do! Decided to rebuild as is! Reason being where taking 64 260. The friend that's doing it sends to a guy that's local does his engines then he puts back in. He restores antiques cars for living and I trust him. On a side note I have a 69 mach 1 originally had the 390 in has a 302 in now and I want 390 back in. So I can find matching numbers I just got find a block made in same date as original correct? I was reading they stamp the vin on some cars engines? Odds are the original was blown or someone was stupid and took out.


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post #17 of 20 (permalink) Old 02-05-2017, 07:17 AM
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I have a 69 mach 1 originally had the 390 in has a 302 in now and I want 390 back in. So I can find matching numbers I just got find a block made in same date as original correct? I was reading they stamp the vin on some cars engines?
Odds are any 390 you look at will have only the date code. Ford's foundry was for some reason very lax about the numbers on FE engines. If you find a correct date, basically anything between one week and two months older than the car, no one would ever know it wasn't original.

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post #18 of 20 (permalink) Old 02-05-2017, 10:33 AM
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Odds are any 390 you look at will have only the date code. Ford's foundry was for some reason very lax about the numbers on FE engines. If you find a correct date, basically anything between one week and two months older than the car, no one would ever know it wasn't original.
I'm not an FE expert, but as I understand it, you could install a 428 and nobody would know the difference.

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post #19 of 20 (permalink) Old 02-06-2017, 06:08 PM Thread Starter
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I'm not an FE expert, but as I understand it, you could install a 428 and nobody would know the difference.


Yea but I'd rather hav the 390 in it. I did research a while back and there is actually less 390 manual shift then cobra jet for this car. My other ones a 69 mach 1. So as far as I understand out of the 3 engines this is the rarest one.


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post #20 of 20 (permalink) Old 02-06-2017, 08:08 PM
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Yea but I'd rather hav the 390 in it. I did research a while back and there is actually less 390 manual shift then cobra jet for this car. My other ones a 69 mach 1. So as far as I understand out of the 3 engines this is the rarest one.

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Well, yeah. The 390 is the most rare Mach 1 engine option, but it's not the most desirable. The reason it's rare is because the price difference between the 390 and the 428 was minimal. So, most buyers who wanted a big block opted for the 428.

Currently working on a 1970 Mach 1 project. See it here: http://forums.vintage-mustang.com/vi...ode-build.html
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