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Flexplate compatibility

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Old Feb 19, 2021 | 09:36 AM
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Default Flexplate compatibility

I have a 2011 Gen IV 5.3 for my swap. The donor truck had a 6l80e but I am bolting this to a 2009 4l65e. The flex plate the engine came with is dished. Will this work for the 4l65 or do I need a different flex plate?
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Old Feb 19, 2021 | 10:19 AM
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4l60e have a dished flex an are a 11.08 bp (bolt pattern) the factory converter have extended snouts...
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Old Feb 19, 2021 | 10:44 AM
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Wikipedia and I quote 😶


4l60e - 4l65e Differences

The two transmissions cannot be differentiated from the outside. The 4L65E shares the same exterior parts but have stronger internals such as 5 pinion planets compared to 4 in the 4L60E. 4L60E uses a 6.5" depth bell with 6 bolts for non gen 3 LS applications 👉 and a 7" depth bell with 7 bolts for LS applications. The 4L65E/70E uses a 7" depth bell and 7 bolts. 👈

They also have different input shafts and torque converters. (4L60E's uses a 298mm input shaft for non LS) 👉 and a 300mm input shaft for LS applications. 4L65E/4L70E uses a 300mm input shaft and converter designed for LS applications only.
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Old Feb 19, 2021 | 11:13 AM
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The engine WAS in front of a 6L80E. Is the flexplate for that different than for a 4L65/60E?
I think that is his question.
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Old Feb 19, 2021 | 09:46 PM
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Originally Posted by G Atsma
The engine WAS in front of a 6L80E. Is the flexplate for that different than for a 4L65/60E?
I think that is his question.
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post #6 👇

https://www.performancetrucks.net/fo...0-swap-516629/
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