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			I have a question about the aluminum GM water neck part number 3877660. 
		
		
		
			I've seen two versions. One has a tab with a hole and the other version does not have the tab. What is correct for a 1970 Chevelle L78 or LS6? 
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	Joseph Farrow 1970 Chevelle L78 1970 Chevelle LS6 1972 Chevelle LS5  | 
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			What you show in the photo is correct for a 70 big block.
		 
		
		
		
		
		
		
			
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	Rick Nelson Musclecar Restoration and Design, Inc (retired) www.musclecarrestorationanddesign.com https://www.youtube.com/watch?v=62r-6vgk2_8 specialized in (only real) LS6 Chevelle restorations  | 
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			More then likely the tab broke off of the other one for a throttle return spring or some thing like that. 
		
		
		
		
		
		
		
		
	
	Dave 67 Nova boy  | 
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 1972convss454 (05-17-2022)  | ||
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			2 versions of the 660 housing. One has numbers on the neck as shown, other is on the base. Both have the tab. If no tab, then it is a 128 housing.
		 
		
		
		
		
		
		
		
		
			Last edited by Pacecarjeff; 05-17-2022 at 10:13 PM.  | 
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 1972convss454 (05-17-2022)  | ||
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			Thanks Guys!
		 
		
		
		
		
		
		
			
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	Joseph Farrow 1970 Chevelle L78 1970 Chevelle LS6 1972 Chevelle LS5  | 
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