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tryin to find out what internals are in my 1990 merc 454 it has a tag on the side with D383062. no cowl to identify mag or not. any help is greatly appreciated.thanx mikey
 

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tryin to find out what internals are in my 1990 merc 454 it has a tag on the side with D383062. no cowl to identify mag or not. any help is greatly appreciated.thanx mikey
FWIW I recently sold a 92 cole that had a merc 454. It had a 10 qt pan and after the first year of ownership I pulled the engine and found a 4 bolt main and all cast parts. Along with a marine cam (which i changed ) and high volume oil pump! I also changed the heads(they were peanuts on the original build) The engine ran great and never had a problem with it! After the cam,induction and head change I had to hold it below 6k due to the cast bottom end! Hope that helps.
 
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