The head castings are C4AE-G, they have the same shape and port size as 427 low-riser and 428 CJ heads,
2.34 X 1.34 intake and 1.84 X 1.34 exhaust.
Combustion chamber size is 71.2 to 74.2, 427 LR and 428 CJ chamber size is 72.8 to 75.8, valves are smaller
2.02 and 1.55 but will take the larger valves 2.09 and 1.65 easily. $500
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