318 I D

OK I found this chart. These heads I have must be the 2658920--- 318 head


LA Small-Block Mopar Cylinder Head Casting Numbers

2268341 – 1962-1967, 318 LA-series small-block, 1.84/1.56 valves

2465315 – 1964-1965, 273 LA-series small-block, 1.78/1.50 valves

2532080 – 1964-1965, 273 LA-series small-block, 1.78/1.50 valves

2536178 – 1966, 273 LA-series small-block,1.78/1.50 valves, early

2658234 – 1966, 273 LA-series small-block,1.78/1.50 valves, late

2658920 – 1967, 273 LA-series small-block, 1.88/1.50 valves
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2658920 – 1967, 318 LA-series small-block, 1.78/1.50 valves
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2658234 – 1967, 318 LA-series small-block, 1.78/1.50 valves

2843675 – 1967, 318 LA-series small-block, 1.78/1.50 valves

2843675 – 1968-1969, 273 LA-series small-block, 1.78/1.50 valves