5.0 Upper Intake Bolts ??

stangman16

Active Member

Nov 16, 2004

640

4

29

San Antonio, TX

Apr 11, 2006

#1

• Apr 11, 2006

• #1

Hello! I'm trying to work on my EFI conversion and I'm having a problem finding some bolts for the Upper to lower intake manifold. No dealerships here in town have them and when I call to ask what the part # is I get 3 different #'s and they tell me I need a Stud... I'm really regretting ordering these intakes off ebay now. They are stock '89-93 upper/lowers in which I need the 6 bolts to connect the upper to lower intake. They look as though it will be 6 long bolts, but I'm not quite sure.. Does anyone have the dimensions of these 6 bolts, so I can just get them from a hardware store?

here's the part #'s they give me:

390589S8 5.46 - stud
390358s8 5/16 short bolts - $3.11 each - plenum bolts
390653s8 6" - long bolts - $4.56 each
39148S8X 7" - long bolt

Should I just go buy some 5/16 bolts that are 6" long?

 

Saleen0679

10 Year Member

Apr 14, 2005

876

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Yakima, WA

Apr 11, 2006

#2

• Apr 11, 2006

• #2

The 390358-S8 matches what I have (5/16-18 x 1.62")
My other number is 390397-S8 (5/16-18 x 6.07").

Some part numbers are constantly changing so who knows.

I believe you need four of the short and two of the long. They are all flange head bolts.

 

jrichker

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Mar 10, 2000

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Apr 11, 2006

#3

• Apr 11, 2006

• #3

Since they are not high stength items and thread into soft aluminum, some threaded rod & a hacksaw will do the trick. See your local hardware, Home Depot or Lowes for the 5/16" threaded rod & nuts.

 

J

jerry beach

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May 20, 2002

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Ocala,FL

Apr 11, 2006

#4

• Apr 11, 2006

• #4

Be sure to grab some flat washers if you do it that way, or if you get bolts with no flange.

The long bolts measure 6 1/4" overall length, and the short ones are 2" overall. As stated you need 4 short and 2 long.

 

Vinnietbird

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Jun 2, 2005

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Apr 11, 2006

#5

• Apr 11, 2006

• #5

Go to the local hardware store and grab all you need for cheap.

 

stangman16

Active Member

Nov 16, 2004

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San Antonio, TX

Apr 11, 2006

#6

• Apr 11, 2006

• #6

Thanks a bunch! I appreciate it, I'll stop by the local hardware store ASAP.

 

5.0fox

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Feb 10, 2003

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buckley/enumclaw wa

Apr 12, 2006

#7

• Apr 12, 2006

• #7

I believe one of the back short bolts is actually a stud? doesnt that useless anti-theft bar mount on one of them? I belive they were giving you the right part numbers and what you need is 2 of the longs 3 shorts and the one stud they listed for you.

 

vristang

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Mar 31, 2005

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Seattle

Apr 12, 2006

#8

• Apr 12, 2006

• #8

5.0fox said:

I believe one of the back short bolts is actually a stud? doesnt that useless anti-theft bar mount on one of them? I belive they were giving you the right part numbers and what you need is 2 of the longs 3 shorts and the one stud they listed for you.

Click to expand...

What's up Enumclaw!

Can you elaborate on the anti-theft bar? I'm not sure what you are talking about.

jason (in Seatown)

 

5.0fox

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Feb 10, 2003

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buckley/enumclaw wa

Apr 12, 2006

#9

• Apr 12, 2006

• #9

Im not sure if its really an antitheft bar but thats just what the internet has named it. its a pointless metal rod that goes from a back intake bolt to the opposite side head. I $hitcanned mine along time ago.

 

Black1987Stang

Active Member

Aug 22, 2004

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Jersey Shore

Apr 12, 2006

#10

• Apr 12, 2006

• #10

yea no one ever puts those bars back on, never seen one till recently really, i dont really see the whole purpose of it but whatever

 

squeeeg

Founding Member

Jul 4, 2000

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Michigan

Apr 12, 2006

#11

• Apr 12, 2006

• #11

Forget that it was even mentioned. I am sure you didn't get one with your intake. Especially if you didn't even get bolts with it. Like they said above it is a random metal bar that sits there for no apparent reason.