Pontiac changed the manuals 1969 and on regarding the dots on cam drive gears, due to laymen didn´t understand that #6 is in firing order with dots shown as in 1968 and earlier manuals.
When you´ve learnt that crank turns two revs while cam turns one you can install the gears dot to dot if you like and then turn the crank one rev before install distributor correctly.
FWIW
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1966 GTO Tri-Power
1970 GTO TheJudge
http://www.poci.org/
http://gtoaa.org/
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