Quote:
Originally Posted by plainred65
What is the timeline on which outside door mirrors heads were used? AFAIK there's the round head offset, round head center mount, and the rectangular (not coast to coast) ones. Did they change at year end, or was it a change over when the old stock ran out?
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1959 on back used a center stud like this one. NOS is the best way to figure this stuff out by part number and books. This one they don't have listed completely as its in the parts books till 1959 .
http://www.ebay.com/itm/122359424255...%3AMEBIDX%3AIT
Then for 1960-1963 they used a thicker mirror , this is an NOS 1960-1963 GMC mirror assembly with the cast 1960-1962 Arm . Its white for GMC , Chevy mirrors are black. Notice three screws around the stem.
Then 1964-1966 has this mirror , thinner design , only one screw and 2 rivets around the stem.
The center stud came back in 1967 and up trucks. The Rectangular mirror was sold as an accessory to mount on the same arm as the round and was offered as a bigger mirror if the owner wanted. There's some controversy that some of the years I've posted on the round offsets snuck into other years. I'm stating what I've found from NOS parts and number applications and original trucks I've had or seen.