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Old Sep 5, 2018 | 03:48 PM
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Cracked Head

Hey Friends,

I discovered I have a cracked cylinder head on my 79’ F-250 4x4.
I’m not having much luck finding anything local and thought I would reach out on here for some help. The motor is a 400. Located in KS., but won’t mind paying to have something shipped. Feel free to email me at matt.swenson@yahoo.com or reply to this post. Thanks!
 

Last edited by Swenson76; Sep 5, 2018 at 03:50 PM. Reason: Adding info
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Old Sep 5, 2018 | 06:01 PM
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There is a parts wanted section in here.
 
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Old Sep 5, 2018 | 06:34 PM
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https://www.jegs.com/i/ATK-Engines/0...hoCgMMQAvD_BwE
 
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Old Sep 5, 2018 | 08:00 PM
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Or Rockauto. It looks like they're a little cheaper than Jeg's.
https://www.rockauto.com/en/catalog/...nder+head,5304
 
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Old Sep 6, 2018 | 01:39 PM
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Originally Posted by Swenson76
I discovered I have a cracked cylinder head on my '79 F-250 4x4.

I’m not having much luck finding anything local and thought I would reach out on here for some help. The motor is a 400. Located in KS., but won’t mind paying to have something shipped.

1975/82 351M/400's were very prone to cracking cylinder heads. When you buy a replacement, have it magnafluxed FIRST before doing anything else with it.

D5AZ-6049-B .. 351M/400 Cylinder Head / Obsolete

1975/79 Ford/L/M Passenger Cars; 1977/79 F100/350; 1978/82 Bronco; 1980/82 F150/350 & Econoline.

No 351M/400 in 1975/79 Econoline, cars after 1979 & 1980/82 F100.
 
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Old Sep 6, 2018 | 02:47 PM
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Check your local Oreilly store.
https://www.oreillyauto.com/detail/b...0?q=2f42&pos=0
 
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Old Sep 6, 2018 | 04:23 PM
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Originally Posted by NumberDummy

1975/82 351M/400's were very prone to cracking cylinder heads.
Why is that??
 
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Old Sep 6, 2018 | 04:33 PM
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They were junk castings and had tons of variations of thickness and with poor head bolt spacing it was hard to control torque through heat cycles and it leads to blown head gaskets and cracked heads.


FYI I would not buy anything from rock auto and I will not support them. They no longer have a customer service department and you are stuck with defective products.
 
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Old Sep 6, 2018 | 05:09 PM
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Originally Posted by ford390gashog
FYI I would not buy anything from rock auto and I will not support them. They no longer have a customer service department and you are stuck with defective products.
is there a connection here... maybe... between cheap prices (due to products made in China) and no more customer service?
 
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