5.2 magnum swap--which gasket do I need?
gtsdude,
Thanks for clearing up. I was wrong. Rockauto shows the same PN for the oil pans. That means the oil pan would have a big gap on a 5.2L at the rear, so they designed a special gasket w/ thicker rubber at the rear for the 5.2L to make up the difference (photo). Seems unwise for long-term, especially as engines age and build-up crankcase pressure (worn rings), giving risk that thick rubber could blow out. I understand an oil pan from a 273/318/340 engine fits the 5.2L block, and would have the normal thickness gasket at the rear. Indeed, you want a 273 pan for an early A since it has a bump-in for the steering travel.
Speaking of poor gasket design, you all probably know of the problem w/ the gasket on the lower sheet-metal of the "beer-keg" intake blowing out to give a vacuum leak and oil suckage into the intake. People sell thicker aluminum plates to cure that.
gtsdude,
Thanks for clearing up. I was wrong. Rockauto shows the same PN for the oil pans. That means the oil pan would have a big gap on a 5.2L at the rear, so they designed a special gasket w/ thicker rubber at the rear for the 5.2L to make up the difference (photo). Seems unwise for long-term, especially as engines age and build-up crankcase pressure (worn rings), giving risk that thick rubber could blow out. I understand an oil pan from a 273/318/340 engine fits the 5.2L block, and would have the normal thickness gasket at the rear. Indeed, you want a 273 pan for an early A since it has a bump-in for the steering travel.
Speaking of poor gasket design, you all probably know of the problem w/ the gasket on the lower sheet-metal of the "beer-keg" intake blowing out to give a vacuum leak and oil suckage into the intake. People sell thicker aluminum plates to cure that.