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Original Message
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| RE: 71 ribbed block |
| By gerry - 08/03/2001 9:38:02 AM; IP 208.217.67.249 |
| The deal with the ribs on the block skirts, Earl, is indicative of nothing other than it is a later FE casting. It's somewhat ambiguous, but everything I've read (real research, not the Internet) and that seems logical is that the ribs are a sign that the molds for the casting were wearing out and the ribs were added to strengthen the mold pattern. The ribs occur on all later FE castings...427 side-oilers and truck 390s included. Otherwise, your casting date is 1971, but that doesn't tell you much specifically about your engine. |
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