Hello ,
i have both gaskets for a 1957 before and after engine number 7150. Did Cadillac change the valve cover in mid stream or was the head changed . Or mayber both ? ... will a 1956 head work with the newer 1957 valve cover ?
Thanks ,
Bill
My 1973 Master Parts book shows all 1957 heads as the same. There is no break at a given number. The valve cover gaskets do break at #7150. It appears that they changed the valve cover only.
1956 and 1958 heads are different from 1957. There are early and late 1956 heads but the later one is a different part number from 1957.
Thank you Alan ,
That does clear up a few thing for me . I think i am going to invest in a master parts book .
Bill
You don't need to anymore. The modified site has several of them up.