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Original Message
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Unnatural adaptations. |
By Dave Shoe - 03/20/2002 10:51:48 PM; IP 63.233.227.74 |
YOur comment about the possible need to install 4-valve heads onto "approximately similar" four cylinder blocks due to a possible fuel crunch got me thinking...
When reviewing the 427 block prints a week ago, ref a reduced resolution image here: http://www.network54.com/Hide/Forum/message?forumid=74182&messageid=1015555058 I noticed the cam bearings are spaced on 1/8" wider centers (4.75") than the bores or mains (4.63"). This seems very odd. This does, however, explain the "offset oil holes" which lead into the cranksaddles.
I wonder if this allowed Ford to make cams using the same machinery which cut MEL cams. I guess I gotta look to see whether Ford offered any engines with 4.75" bore centers about that time. Also, I'll have to see whether there is always a discrepancy in any engine, as this variation may provide a necessary function.
Shoe. |
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This thread, so far...
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