Front "China wall" sealing issue on SBM
I should have used a thicker bead of sealer and I'll be sure to do that next time it goes on but in that corner it wouldn't have helped much even if it was 1/2" tall; all the sealant would have done was go up into the open area on the underside of the manifold. The bottom sealing surface on the front edge of the intake ends pretty much where the back edge of first bolt hole is but it needs to extend back farther by about 1/2-1".
Take a look at these pics, first one is the bottom of an RPM like the one I'm running. Second is a Magnum Air-Gap; notice how the circled corner has more area filled in. Third pic shows the area that needs to be built up like on the Magnum manifold so it seals properly. Note I'm running a 5.9L Magnum block with LA-based Edelbrock heads.
I should have used a thicker bead of sealer and I'll be sure to do that next time it goes on but in that corner it wouldn't have helped much even if it was 1/2" tall; all the sealant would have done was go up into the open area on the underside of the manifold. The bottom sealing surface on the front edge of the intake ends pretty much where the back edge of first bolt hole is but it needs to extend back farther by about 1/2-1".
Take a look at these pics, first one is the bottom of an RPM like the one I'm running. Second is a Magnum Air-Gap; notice how the circled corner has more area filled in. Third pic shows the area that needs to be built up like on the Magnum manifold so it seals properly. Note I'm running a 5.9L Magnum block with LA-based Edelbrock heads.