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Old 06-22-2019, 12:35 PM   #4
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Join Date: Jun 2010
Location: San Antonio, Texas
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Default Re: 49-50 mercury f-1 oil pan question

The truck pan has an aluminum dust seal retainer at the back to work with the cast iron half bell and the pan also ties in with the half bell on the rear of the sump. The Mercury has the three studs on the bottom rear of the sump that tie into the starter plate for more structural rigidity. The Mercury is shorter in the sump bottom and has no clean out where the truck type has a clean out in the bottom and is deeper as was previously mentioned.
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