Why stop there? I think a Pontiac fella ought to assess the total LS deal grafted onto the old iron head:
Valve stem size & guides. Valve lengths?
Beehive springs and them tight STOCK retainers, keepers. No Ti retainers.
Rockers
Pushrod diameter
Roller Lifters.
Was my next thing to look at but sold my last set of Heads (48's).
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