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Original Message
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RE: different castings of R heads |
By Bob Sprowl - 12/17/2002 1:06:23 AM; IP 65.80.206.172 |
The brass plugs and inthe holes used for the thermactor emissions system.
All heads after '66 had the cast bosses for this although many were not drilled out. |
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This thread, so far...
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