Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. | 
	
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			Hello 
		
		
		
		
		
		
			I need help to decode a ZL1 block. It has casting 46053Y...........NOT 3946053 This block was bought in 1988. What can it be? Thanks Kristoffer 
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	L88 Camaro  | 
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