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Old 03-21-2006, 02:40 AM   #1
msm
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Default Flywheel question

Does anyone have info on the application of the following flywheel, which is 14" and 168 tooth:

#3988795, also has the word "NODULAR" cast into it on the block side, casting date L08.

Thanks!
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Old 03-21-2006, 01:32 PM   #2
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'66-'74 big-blocks (except L-88) and '69-'81 small-blocks (except ZR-1) used 14" 168-tooth flywheels - it's probably one of those.
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Old 03-21-2006, 01:43 PM   #3
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I went out and pulled all of my 168 tooth flywheels (about 15). None of them have that casting number.
Does it have a bolt pattern for a 10.5in clutch or a bolt pattern for an 11in clutch?
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Old 03-21-2006, 03:16 PM   #4
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Thanks a lot for the information.

Is there an easy way to tell which bolt pattern is on the flywheel? Thanks again!
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Old 03-22-2006, 12:43 AM   #5
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For a 168 tooth (14in diameter) flywheel with a bolt pattern for the 11in clutch, the bolt holes will be near the perimeter of the flywheel.
For a 168 tooth flywheel with a bolt pattern for a 10.5in clutch, the bolt holes will be about an inch away from the edge of the flywheel. There were some flywheels made with dual bolt patterns.
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Old 03-22-2006, 02:42 AM   #6
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The bolt holes are close to the edge, much less than an inch, and there is a single bolt hole pattern. So this must be for an 11" clutch.
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Old 03-22-2006, 08:12 PM   #7
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Yep, sounds like it to me.
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Old 03-22-2006, 09:32 PM   #8
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Default Flywheel Id

Hi,

Are you sure that it's not 3988759 ??? That part number is listed in my Chevrolet passenger car parts catalog as fitting 66-69 passenger car with 427 and manual trans.


RON
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