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Flexplate Gen3 6.0 4L60E?

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Old Mar 21, 2018 | 08:26 AM
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Default Flexplate Gen3 6.0 4L60E?
Putting a Gen3 LQ9 550hp engine and a stage 6 RPM transmission in my Bel Air. Which Flexplate should I use? Flat? Dished? does it need a spacer?

Thanks,
Keith R
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Old Mar 21, 2018 | 10:33 AM
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Hi Keith,

You will need TCI part number 399753.
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Old Mar 21, 2018 | 12:14 PM
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Thanks Jeremy!! Patiently awaiting my RPM Stage 6 to be delivered!!!!
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Old Mar 21, 2018 | 12:18 PM
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You're very welcome. We will keep chipping away at your trans.

Take care.
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Old Mar 21, 2018 | 09:05 PM
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Doesn't it matter the year of the 6.0L ? I thought some of the early ones had an extended crank flange.
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Old Mar 22, 2018 | 07:47 AM
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Originally Posted by jetech
Doesn't it matter the year of the 6.0L ? I thought some of the early ones had an extended crank flange.
He stated LQ9 in the first post. No LQ9 were built with the extended crackshaft.
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Old Mar 22, 2018 | 07:44 PM
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Good to know thanks !
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Old Jul 2, 2018 | 01:35 PM
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Originally Posted by Jeremy@RPMTransmissions
He stated LQ9 in the first post. No LQ9 were built with the extended crackshaft.
Hey guys,

I'm doing this same thing.

Just to clarify. With an LQ9 (2008 model) and 4l60e, no spacer is needed when using flex plate 399753 because the spacer comes in the kit or because it doesn't need the spacer?
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Old Aug 24, 2018 | 08:50 PM
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Originally Posted by jetech
Doesn't it matter the year of the 6.0L ? I thought some of the early ones had an extended crank flange.
1999-2000 had the extended crank..I JUST went through this on my engine swap 5.3 to a 1999 LQ4.
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