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Old Feb 18, 2020 | 01:52 PM
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From: Whitmore lake Mi
flex plate flywheel bolts

Are the bolts for a manual trans flywheel and an auto trans flex plate the same for the 300?
Jim
 
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Old Feb 19, 2020 | 03:28 PM
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They're close.
They're both 7/16 x 20 thread, but the flexplate bolts are shorter.

Flex Plate: 7/16x20 - 0.6875" length (11/16")
Fly Wheel: 7/16x20 - 1.0000" length
 
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Old Feb 19, 2020 | 05:26 PM
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From: Whitmore lake Mi
Thank you. I've been searching the web and the six forums and could not find the answer on the length. I was certain they were shorter because the differences in the flywheel and the flex plate thickness.

Jim
 
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Old Feb 19, 2020 | 05:36 PM
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From: Whitmore lake Mi
Is there any issue with the longer ones. Will they bottom out?

I think these will work.

https://www.summitracing.com/parts/a...cations?page=2
 
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Old Feb 19, 2020 | 07:10 PM
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I haven't installed an auto, so I don't know. I do know that you have to coat the threads in sealant or loctite since they'll leak oil otherwise, so I don't think they bottom out. I *think* you'd get away with longer bolts just fine. You just don't want to use the shorter ones on a manual, or you won't have very many threads.
My guess is they just made them the right length so there wasn't "excess"

 
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Old Feb 20, 2020 | 05:35 AM
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From: Whitmore lake Mi
That's what I was thinking but I was not finding anything definitive as you have shared!

Thank you
Jim
 
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