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68 big block fly-wheel.......

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Old Jul 20, 2011 | 05:06 PM
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Default 68 big block fly-wheel.......
We want a stock steel flywheel for this build and the General doesn't list it anymore. Can I get a recommendation on a USA built quality steel unit. Got all the pros and cons on aluminum and will stick with the old steel one. They should be used on other GM cars/years as well right? Thanks.
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Old Jul 20, 2011 | 05:27 PM
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There's a 3856579 on ebay for $125
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Old Jul 20, 2011 | 05:34 PM
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Originally Posted by Kerrmudgeon
We want a stock steel flywheel for this build and the General doesn't list it anymore. Can I get a recommendation on a USA built quality steel unit. Got all the pros and cons on aluminum and will stick with the old steel one. They should be used on other GM cars/years as well right? Thanks.


427" or 454"
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Old Jul 20, 2011 | 06:55 PM
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like RedVetracr said "427 or 454" makes a differance,
Internal or External balance Flywheel.
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Old Jul 21, 2011 | 10:16 AM
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Sorry guys, it's an externally balanced 454 (1979 block).
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Old Jul 21, 2011 | 01:21 PM
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Originally Posted by Kerrmudgeon
Sorry guys, it's an externally balanced 454 (1979 block).
interested in a GM #3973457 (externally balanced 454" flywheel) send a PM if you or anyone else is interested.
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Old Jul 21, 2011 | 01:56 PM
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3993827 is available. Probably made in Mexico these days, but still a quality piece.
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Old Jul 21, 2011 | 02:31 PM
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Originally Posted by redvetracr
interested in a GM #3973457 (externally balanced 454" flywheel) send a PM if you or anyone else is interested.
Originally Posted by zwede
3993827 is available. Probably made in Mexico these days, but still a quality piece.
which of these is the "correct one" or....what's the difference???
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Old Jul 21, 2011 | 02:48 PM
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how would you like me to respond? you don`t accept PM`s
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Old Jul 21, 2011 | 08:36 PM
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Originally Posted by redvetracr
how would you like me to respond? you don`t accept PM`s
I tried to change that, guess it didn't work. Will leave my email on a PM.
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Old Jul 22, 2011 | 08:56 AM
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Are these OEM GM flywheels with the casting numbers, cast iron or cast steel?
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Old Jul 22, 2011 | 01:17 PM
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I have one from a 73 454 auto, if interested ????
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Old Jul 25, 2011 | 09:43 AM
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Originally Posted by oldsarge
I have one from a 73 454 auto, if interested ????
Thanks Brian, but that would be the thin ring gear for an automatic right? I need the thick heavy *****! about 35 lbs.
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Old Jul 25, 2011 | 09:48 AM
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Originally Posted by 69 Chevy
Are these OEM GM flywheels with the casting numbers, cast iron or cast steel?
3993827 is cast iron. I weighed it at 29 lbs, although the catalogs list it at 22.
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