Join Date: Aug 2010
Location: Natchitoches, LA. at the edge of the swamp
You got the corrosion because of the dissimilar metals in the engine and an acidic condition of the coolant mixture. This is why you should change the antifreeze on a regular basis at least every 3 to 4 years.
Clean up the mating surfaces and use a smear of RTV on both sides of the intake manifold gasket around all the intake ports and the water passages, including the rear passages that are blocked off by the intake manifold. The cork seals can be disposed of and use a thick bead of RTV to make your own seal. Let the RTV skin over before setting the intake manifold in place. Torque the manifold to spec. There are several videos on YouTube showing the RTV procedure.
The Fauxstang. Dynacorn 67 fastback. Dart SHP 363, Close ratio Magnum 6 speed, 3.70 Eaton Truetrac in a fabricated full floater 9", SorT coil over suspension. Still in pieces.
'14 SHO with most all the bells and whistles. Stock for now.
F-150 SCab daily driver