ARP Intake Bolts?
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Laughing Gas
Joined: Jan 2012
Posts: 1,106
Likes: 25
ARP Intake Bolts?
I just ordered some intake bolts for my 79 400 from Summit and are the ARP brand.
And i was wondering why the kit has two longer bolts than the rest?
Its says its for a 351C 351M 400.
In what location do i use the longer bolts, i will be using a Edelbrock 4v intake, I'm not sure how these longer bolts work.
Here is a pic.
[IMG]
[/IMG]
And i was wondering why the kit has two longer bolts than the rest?
Its says its for a 351C 351M 400.
In what location do i use the longer bolts, i will be using a Edelbrock 4v intake, I'm not sure how these longer bolts work.
Here is a pic.
[IMG]
[/IMG]
Thread Starter
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Laughing Gas
Joined: Jan 2012
Posts: 1,106
Likes: 25
Their are only 2 bolts, and i think they are the same diameter ,their just longer.
So how do they go in the center, when there is 4 center bolt holes on my intake?
I'm not exactly sure what they were thinking when they put this kit together.
So how do they go in the center, when there is 4 center bolt holes on my intake?
I'm not exactly sure what they were thinking when they put this kit together.
Senior User
Joined: May 2012
Posts: 161
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I used this bolt set on my 400 with a non-EGR Edelbrock Performer 2171 intake manifold. However, I used the 12-pt heads not the 6-pt ones but I think the general concept is the same. The kit included (8) 3/8-16 x 2 1/4" bolts that bolt into the heads around the perimter, (2) 5/16-18 x 2" bolts that go in two of the four center holes and (2) 5/16-18 x 3 1/4" bolts that didn't work in my application since there was no place for the two longer bolts to work correctly.
When I called ARP to inquire about it, the customer service rep was not sure why those two bolts were longer or what application they were for...lot's of help there. I ended up ordering two more of the shorter bolts directly from ARP to complete the set correctly for my application giving me a total of (4) 5/16-18 x 2" center bolts. The part number for the 12-pt bolt is 3AG2.000-5CL and the cost is $2.40 per bolt so it cost me $4.80 plus shipping which I can't give you a good estimate on because I bought $60.00 worth of fasteners I needed for other projects to make my order worth it and they ended up giving me a discount that was within a few cents to what shipping cost me.
When I called ARP to inquire about it, the customer service rep was not sure why those two bolts were longer or what application they were for...lot's of help there. I ended up ordering two more of the shorter bolts directly from ARP to complete the set correctly for my application giving me a total of (4) 5/16-18 x 2" center bolts. The part number for the 12-pt bolt is 3AG2.000-5CL and the cost is $2.40 per bolt so it cost me $4.80 plus shipping which I can't give you a good estimate on because I bought $60.00 worth of fasteners I needed for other projects to make my order worth it and they ended up giving me a discount that was within a few cents to what shipping cost me.
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Thread Starter
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Laughing Gas
Joined: Jan 2012
Posts: 1,106
Likes: 25
I used this bolt set on my 400 with a non-EGR Edelbrock Performer 2171 intake manifold. However, I used the 12-pt heads not the 6-pt ones but I think the general concept is the same. The kit included (8) 3/8-16 x 2 1/4" bolts that bolt into the heads around the perimter, (2) 5/16-18 x 2" bolts that go in two of the four center holes and (2) 5/16-18 x 3 1/4" bolts that didn't work in my application since there was no place for the two longer bolts to work correctly.
When I called ARP to inquire about it, the customer service rep was not sure why those two bolts were longer or what application they were for...lot's of help there. I ended up ordering two more of the shorter bolts directly from ARP to complete the set correctly for my application giving me a total of (4) 5/16-18 x 2" center bolts. The part number for the 12-pt bolt is 3AG2.000-5CL and the cost is $2.40 per bolt so it cost me $4.80 plus shipping which I can't give you a good estimate on because I bought $60.00 worth of fasteners I needed for other projects to make my order worth it and they ended up giving me a discount that was within a few cents to what shipping cost me.
When I called ARP to inquire about it, the customer service rep was not sure why those two bolts were longer or what application they were for...lot's of help there. I ended up ordering two more of the shorter bolts directly from ARP to complete the set correctly for my application giving me a total of (4) 5/16-18 x 2" center bolts. The part number for the 12-pt bolt is 3AG2.000-5CL and the cost is $2.40 per bolt so it cost me $4.80 plus shipping which I can't give you a good estimate on because I bought $60.00 worth of fasteners I needed for other projects to make my order worth it and they ended up giving me a discount that was within a few cents to what shipping cost me.
OK now that you mention it, i didn't notice there was two other bolts that were different diameter and shorter.
So i guess I'll get a hold of ARP and order shorter bolts for the centers.
OrangeBeast thanks for your help, i guess maybe the longer bolts are necessary for the Cleveland motors?.
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