Dana67Dart said

My thermostat housing story...

EVERY thermostat housing on any engine I have had has leaked.

Untill now!

1. I bought an OEM style repo housing
2. I block sanded the intake, still had to end of old corrosion poc marks
3. IMPORTANT... I cleaned out the bolt holes in the manifold till the bolts could be screwed in by hand and bottom out on the bolt head / manifold surface.
4. I bought a gasket from Real gaskets Thermostat Housing Gasket - Chrysler, Dodge, Plymouth - Older V8 Engines
5. I installed the gasket EXACTLY AS THE INSTRUCTIONS SAID AND TORQUED THE BOLTS TO THE CORRECT INCH POUND SPEC

7+ years not 1 drop and I use a 16lb cap

Click to expand...