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post #1 of 2 (permalink) Old 01-05-07, 08:10 PM Thread Starter
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confused Mystery Motor

Can anyone help me identify the non-original 302 in my 1964 Mercury Comet? The numbers on the engine block near the starter are as follows:


below that, “D30”

and below D30, stamped perpendicular to it, “72”.

If I am using my Ford secret agent spy decoder ring properly, wouldn’t that mean it was built in 1980?

But the engine appears older than 1980, I’d say maybe early 70’s. It has points, not electronic ignition (although I suppose that could be retrofitted). The firing order is 1-3-7-2-6-5-4-8.

Of course the engine tag on the coil mount bolt is long gone. The numbers on the front of the engine block just below the drivers side head are stamped exactly as follows:


It has a 4 barrel Autolite 4300 (soon to replaced with an edelbrock). Doesn’t have EGR or any of the newer emissions type of stuff.

Any ideas? Thanks
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post #2 of 2 (permalink) Old 01-07-07, 04:27 AM
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Re: Mystery Motor

Yep definatley a 1980 build block.
What is bolted in/onto it after that, 25+ years later is anyones guess!

Take my own 302 for eg. 1968 build, 0.030 oversize flattops, 1965 small chamber heads and inlet manifold, 1994 water pump, sump, accessories, and a 1986 distributor running the early timing sequence!

Its only nuts and bolts :)

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