ARP Head Studs - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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Old 01-25-2012, 06:59 AM
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ARP Head Studs

Does the 6.4 come with head studs or head bolts? After some short research it looks like the only way to go is with studs but I was just wondering what it looks like stock.
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Old 01-25-2012, 07:36 AM
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Studs and bolts are the same thing. Aftermarket studs are stronger than the stock ones.


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Old 01-25-2012, 07:44 AM
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Quote:
Originally Posted by jordan572 View Post
Does the 6.4 come with head studs or head bolts? After some short research it looks like the only way to go is with studs but I was just wondering what it looks like stock.
The 6.4L stock comes with head bolts not studs.
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Old 01-25-2012, 07:45 AM
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Quote:
Originally Posted by a2elvis View Post
The 6.4L stock comes with head bolts not studs.
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Old 01-25-2012, 08:49 AM
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Originally Posted by amb82 View Post
Studs and bolts are the same thing. Aftermarket studs are stronger than the stock ones.


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Im pretty sure they arn't. A stud is threaded into the block then the head slides over that, finally a nut is tightened onto the other end of the stud.
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Old 01-25-2012, 09:01 AM
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Oh ok maybe I am wrong. Learn something new every day
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Old 01-25-2012, 01:19 PM
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yea studs are not the same as a bolt, a stud is threaded on both ends and you thread them into the block and then slide the head onto them and then put lock washers and nuts to hold them down. Factory uses Torque to yield bolts
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Old 01-25-2012, 01:36 PM
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Like stated above, your motor comes from the factory with head bolts. This is the case with any production diesel engine.

Head studs are recommended when you run the higher horsepower tunes available for the 6.4L Power Stroke. The factory head bolts on the 6.4L are pretty strong compared to the 6.0L, but there is a point where they will blow. It becomes more likely on the 250+ tunes, but a lot of people run the 300 HP level tunes for a long time with no issues.

ARP's or H-11 head studs will both work fine for your application. I personally prefer H-11 head studs due to the higher tensile strength, but both studs are proven.
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Old 01-25-2012, 04:35 PM
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man spartan has been tearing these threads up today. I run 310 as my DD and i have 191k
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Old 01-26-2012, 09:16 AM
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Is the stud bolt swap a cab off job? Is it something a weekend mechanic can tackle or is it really tricky and has to have the cab off. I can take the cab off I have a lift. Just wondering . Thanks for the info.
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