engine identification

[forease]

I just picked up a 68 coupe. The former owner thinks the block came from a "78" 302 c.i. and the intake manifold came from a "74". It has points distributer and a 2 bbl.The spark plugs are small threads. It has a automatic transmission. Can anyone tell me how to identify these items?

[PKRWUD]

There will be a series of numbers cast into the block, just above the starter. Write them all down and post them here. There will also be numbers cast into the head, under the valve covers.

Take care,
-Chris

[agawam]

small plugs means the heads are 74 or newer with big chambers

[forease]

I haven't had a chance to pull the valve covers off yet to check the numbers on the heads, but I got the numbers from the intake manifold (D50E-9425-GA). Info I've seen tells me this was made in 1975, Is that correct? The 2 barrel carb is an autolite (C8ZF G - E 8D 10). I'm told it is a 1968? The single point distributor is an Autolite 12127, part number prefix looks like (C9AF), part number suffix is R, assembly code is (8M5). Does anyone recomend installing Pertronix's igniter unit or any other brand or other options. On the engine identification numbers above the starter, does the starter have to be removed to see these or am I blind?
All help and ideas are greatly appreciated, Forease

[Gregski]

I picked up an engine with the same intake manifold number D50E-9425-GA the guy told me it was from a 1972 Mustang, but I don't think so as D means 1970s and 5 means 75 so it has to be at least from 1975 also there are some D6DE parts on it so now I am thinking 1976, but I don't know what it is. There are some D5ZE Z=mustang parts on it, but I don't think it's a Mustang II.

Number on the block: D4DE 6015 AC 6M5

Here are some pictures if anyone can help me. I know this is an old post but maybe we can help some other poor suckers like me in the future.