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In Reply to: what it this motor posted by Duncan Miller on May 27, 2001 at 06:54:31:
I have both the early 3.5, and the late 3.5 US Spec motors. The head on the 85 has 84 stamped and the 88 has an 88 stamp. The heads are original. If the head has not been changed, it will give you an idea of the manfacturer date.