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Building an LT1 or L86?
This set of 6.2L GEN V cylinder heads (part number 12620549) is sold as rebuildable cores.

They're used, but the seller has machine cleaned and inspected them for cracks and damage before shipping.
Note: they need to be resurfaced before installation.

Made of aluminum, direct replacement.

Interchanges with 12685669, 12678633, 12678972, and others.

Great starting point for a performance build or rebuild.

4.5 out of 5