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Old October 8th, 2019, 12:43 PM
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identification
Hi . I am trying to ID a motor in a 65 F-85 only # I can find is #991917
Also a Posi rear #16A41 GM 00 212 . From a 70 Cutlass .
any help is appreciated .
rocwal
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Old October 8th, 2019, 12:50 PM
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Originally Posted by rocwal
Hi . I am trying to ID a motor in a 65 F-85 only # I can find is #991917
Also a Posi rear #16A41 GM 00 212 . From a 70 Cutlass .
any help is appreciated .
rocwal
Dan B
Not sure what a 2.56 posi will be worth.
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Old October 8th, 2019, 01:13 PM
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thank you Randy . Kinda thought it is a 2:56 ratio .
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Old October 8th, 2019, 02:24 PM
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Where did you find the 991917 number??? Block casting number for 64-66 330 engines should be 381917... Any chance you are possibly reading the 38 as 99 for the first two numbers??? Casting number is located next to the oil fill tube...

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Old October 8th, 2019, 04:20 PM
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How about we back up. Is this engine a V6 or a V8? Where, exactly was this number?
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Old October 9th, 2019, 03:01 PM
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V 8 and right by oil fill tube front of thermostat housing
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Old October 9th, 2019, 03:03 PM
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Im going to check again tomorrow
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Old October 9th, 2019, 06:38 PM
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Originally Posted by rocwal
Im going to check again tomorrow
Yeah, look again. That's actually 381917, which is a 330 block and correct for a 1965 Cutlass.
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Old October 12th, 2019, 08:39 AM
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UR right , poor eye sight was 381917
Thanks to all
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