What Year

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  #1  
Old 08-24-14, 12:50 PM
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Question What Year

anyone Know what year GM started using the Nylon covered upper timing gear in their engines?
vehicle in question is 1966 Olds Toronado

a friend of mine is looking to buy one, that is Supposedly never had any engine work done on it
 
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Old 08-24-14, 01:48 PM
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It was either an aluminum or steel gear with nylon teeth.
In researching the best I could find was that they started in 1968.

One sure way to know if it was bad was to lock for plastic/nylon shavings in the oil.
 
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Old 08-24-14, 06:18 PM
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In researching the best I could find was that they started in 1968.
That is probably pretty close because I remember in the early '70s Pontiac used the plastic gears too.
 
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Old 08-24-14, 07:57 PM
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Thanks for the replys.
This should make my buddy happy about his "Find"
 
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