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Factory Five Roadster Engine Build Dart Main Cap Vs Ford Main Cap

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Here are the two different main bearing caps side by side. Besides the four-bolt retention, with the outer two being splayed, the Dart piece shows far heavier construction. The Ford part is bored to accept the standard 351W 3-inch bearing diameter, while the Dart piece is set up for the smaller 23/4-inch Cleveland-sized bearing.
Smeding 427 - Project Snake Charmer Part 4

 Here are the two different main bearing caps side by side. Besides the four-bolt retention, with the outer two being splayed, the Dart piece shows far heavier construction. The Ford part is bored to accept the standard 351W 3-inch bearing diameter, while the Dart piece is set up for the smaller 23/4-inch Cleveland-sized bearing.  View Related Article

 

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