Thread: BBC head gaskets

Tweet

i did not see this till to day so i will post this it may help someone the 1017-1 and 1017-2 are only for mark 4 blocks with mark 4 heads . if you useing the mark 4 block with 5/6 heads or the 5 or 6 block you would use the F-1047 4.540 BORE OR F-1037 4.370 OR F-1067 4.630 BORE the lower water pass on the stock mark 4 blocks may have only one or two holes .they need 3 holes here with the 5/6 heads and gaskets .the bowtie blocks and word .dart .donovan are open up hear so you do not need drill out the deck heres is a one of the world blocks as you can see there open .they do not need to be this big about 1/2 to 5/8 hole that is the size of the hole in the head gaskets