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1963 421 Block Help
4 Attachment(s)
Hi There - first time posting on this forum. Thanks for the help. I have included some photos of what I think is a 1963 421 block. Casting code 544988 with a date code of C23. But there is no stamping on the face of the block. Is this a possible service replacement block? Any help or info would be greatly appreciated. Thanks again
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Not drilled for a block mounted starter so is pre 64.Tom
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its a 4 bolt main and looks to be large main and rf corner near deck looks to be 421 i would say. I will check casting number on mine to be sure but looks to be 421..
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