Desperately need experienced opinions on Engine Identification

thecatsfan said

That's exactly what I had read - that 67 intakes could have the bolt holes drilled out to allow the bolts to go through at the off angle. So there is no way to assume which heads are on it or which base power plant it is.

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Pull the valve covers and find the head casting numbers...that will determine early or late heads. 2bbl and 4bbl 273's share everything EXCEPT pistons, cam, dual point distributor, valve covers, carb, and 4bbl intake. Swapping those parts makes a 2bbl engine into a 4bbl engine.