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Registered User
Join Date: Nov 2011
Member # 202441
Location: San Diego
Posts: 1
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4.8 or 5.3 engine block identication
Hello need some help to ID an engine block (cast iron generation 4 casting ) number:12576177 ive heard that this block can be either a 4.8 or a 5.3 ?
Was this casting number used for any specific years of the fourth gen production run ? Thanks for your help. ![]() ![]()
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