Tough Ultra Black for end seals can't beat it
MLR426
Clean the surfaces with brake clean, acetone, alcohol,
Lay a bead, make sure to have enough in the corners, set the intake, let it cure 24 to 48 hours, trim the excess with a razor blade.
I'll have to agree with the above recommendation of using some Permatex Ultra Black RTV on the block rails. Be certain the surfaces are squeaky clean as suggested.
We don't include the end seals for a few reasons. One being many of these heads and blocks have been milled therefore the gap between the manifold and the block can vary widely.
It is highly doubtful you will find a suitable foam at your local craft store that will stand up to the oil, fuel, heat and compression set.
Ultra Black is where it's at
