Engine tag help. Is this a 5 or a 6 - Pontiac GTO Forum
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post #1 of 5 (permalink) Old 08-25-2018, 08:52 AM Thread Starter
 
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Engine tag help. Is this a 5 or a 6

It looks like
January 23rd
but is it a 5 or 6
and where is the trans info located ?
Thanks
Ken
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post #2 of 5 (permalink) Old 08-25-2018, 09:31 AM
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The date code appears to be for 66, the tag for the st300 2 speed transmission will be on the passenger's side of the transmission, what are the codes stamped on the front passenger's side of the block just under the head? It appears that your engine date code and your car's build date (01D- 4th week of January) match,
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post #3 of 5 (permalink) Old 08-25-2018, 10:13 AM Thread Starter
 
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Is this the code/number ?
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post #4 of 5 (permalink) Old 08-25-2018, 01:12 PM Thread Starter
 
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Possible number by the head

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Originally Posted by Ken 66gto View Post
Is this the code/number ?
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post #5 of 5 (permalink) Old 08-25-2018, 07:32 PM
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The YE code is what I was looking for, unfortunately that is the engine code for a b-body and not the GTO,

1966, 389, 325 HP, YE, Automatic, 10.5cr, 066 cam, 092 heads, 1-4bbl, 4034S carb # and Block Casting # 9778789

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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, LeMans & GTO Data Plate, Vin Tag and Drive Train Numbers

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