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special flywheel bolts?

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Old Mar 9, 2017 | 05:47 PM
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special flywheel bolts?

I am missing a couple special bolts( 7/16NF w/ shallow heads)for flywheel to crank. Can I replace all bolts w/ regular grade 8 bolts?
 
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Old Mar 9, 2017 | 08:14 PM
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You really should use flywheel "place" bolts to reduce failure and remain self-locking.
The underside of the head is concave and acts like a belleville washer to keep clamping pressure applied under shock loads.

​​​​​​​Ford's part number is F1ZZ*6379*A


http://www.bluetoad.com/publication/..._id":"413404"}
 
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Old Mar 10, 2017 | 05:48 AM
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You can also get Arp brand flywheel to crank bolts and pressure plate to flywheel bolts at Summit racing.
 
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Old Mar 10, 2017 | 11:35 AM
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From: Ideeho
Always use flywheel specific bolts........Grade 8's are not acceptable.....
 
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Old Mar 10, 2017 | 01:03 PM
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Originally Posted by ArdWrknTrk
You really should use flywheel "place" bolts to reduce failure and remain self-locking.
The underside of the head is concave and acts like a belleville washer to keep clamping pressure applied under shock loads.

​​​​​​​Ford's part number is F1ZZ-6379-A (replaced D2AZ-6379-A) .. 7/16" -20 x 1.00" long =
300/302/351M/351W/400/460.
 
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Old Feb 22, 2020 | 08:43 AM
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Yes, no grade 8! I found a set buried in my pile of parts for my kit. They were supplied with my TCI trans. I guess I forgot after 11 years on the back burner!
 
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Old Feb 22, 2020 | 10:21 AM
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Originally Posted by jem44357
Yes, no grade 8! I found a set buried in my pile of parts for my kit. They were supplied with my TCI trans. I guess I forgot after 11 years on the back burner!
You got a manual transmission or parts from TCI? I thought they only did automatic transmissions. Guess I never looked for that stuff from them.

I probably would have forgotten about the bolts after 11 days.
 
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Old Sep 5, 2022 | 10:35 AM
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automatic trans bolts are 3/4” and manual are about 1”. So if you have tue NP435 / T18 use the longer ones.
 
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