Got a set of heads in mind and the seller is selling them as 1970 ls6 closed chambered cylinder heads but the casting number on the heads is 3994028, and I double checked it the last digit is an EIGHT. Is this correct for a 1970 ls6 cylinder head? If not what is it? Any help as quick as possible would be appreciated.

THanks
Mark

Mark, I posted this over our sister site Team Chevelle and you can see what the guys over there say.


http://www.chevelles.com/cgi-bin/forum/ultimatebb.cgi?ubb=get_topic&f=6&t=005516

I'll still bet that the 8 is a closed 6. That is a 1971 LS6 head.

The correct 1970 LS6 head is casting number 3964291

From Team Chevelle:

Ls6Convertible
Tech Team


posted 05-16-2004 07:00 AM
--------------------------------------------------------------------------------
Those are Ls6 REPLACEMENT heads...Not produced in 1970