The Supercar Registry - 3877660 Water Neck ?

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1972convss454

05-17-2022 04:14 PM

3877660 Water Neck ?

1 Attachment(s)

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?

SS427

05-17-2022 06:46 PM

What you show in the photo is correct for a 70 big block.

67 Nova Boy

05-17-2022 08:16 PM

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

Pacecarjeff

05-17-2022 09:10 PM

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.

1972convss454

05-17-2022 09:48 PM

Thanks Guys!

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