1955 panhead head casting numbers.

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1955 panhead head casting numbers.


Post by 19pan55 » Fri Feb 13, 2009 1:22 am

I have a 1955 6 hole rear head casting number 16706 date code 5-4 that is not listed in Palmers book. Has anyone seen this? Palmer lists the correct numbers as 16704 and 16705.

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Re: 1955 panhead head casting numbers.


Post by john HD » Fri Feb 13, 2009 2:11 am


welcome to the forum 19pan55!

i can run out and see what mine have.


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Re: 1955 panhead head casting numbers.


Post by 55PAN » Fri Feb 13, 2009 1:49 pm

Hi 19pan55,

I also have a '55 pan with the original heads. I'm sure your rear head numbers are correct. There are some mistakes in Palmer's book and this might be one also.

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Re: 1955 panhead head casting numbers.


Post by Speeding Big Twin » Tue Feb 17, 2009 8:56 am

On my computer I have several examples such as the one below and the casting number on them is 16706-55, not 16705-55 as Palmer states. But on page 205 of Classic Harley Big Twins, Greg Field gives the same rear casting number as Palmer, although Field omits the hyphen: 16705 55.

In Palmer's book this apparent error is on page 183 but there is no mention regarding that page in Perry Ruiter's list of factual errors which pertains to Palmer's book. Can anybody clarify the situation? Eric


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