GT40 HEAD BOLTS

JOEGTS

New Member

Jul 23, 2005

153

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Port Saint Lucie, FL

Jan 27, 2006

#1

• Jan 27, 2006

• #1

I have a set of GT40 heads that I plan to install in the near future and I am unsure of the head bolts needed. I purchased ARP #154-3601 head bolts, but I have read that the bolt holes are larger than the holes in E7's. Does any one know if these bolts will work and do I need to buy some sort of spacer to go with these. They are Iron GT40's. Any info would be appreciated.

 

Zero Signal

Active Member

Feb 24, 2003

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46

Tucson, AZ

Jan 27, 2006

#2

• Jan 27, 2006

• #2

Those are the bolts I used. I know other people have used those too. The alignment dowels will keep the head from shifting. But with 70-75 ft-# of torque on those bolts, they aren't going to shift anyway.

 

JOEGTS

New Member

Jul 23, 2005

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Port Saint Lucie, FL

Jan 27, 2006

#3

• Jan 27, 2006

• #3

So I shouldn't bother with buying the spacers? Thanks.

 

illwood

Member

Apr 3, 2004

636

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19

Worcester, MA

Jan 27, 2006

#4

• Jan 27, 2006

• #4

Zero Signal said:

Those are the bolts I used. I know other people have used those too. The alignment dowels will keep the head from shifting. But with 70-75 ft-# of torque on those bolts, they aren't going to shift anyway.

Click to expand...

John's right about the dowel pins locating the heads, but I would run the spacers. I don't like giving things the opportunity to move in a bad way.

 

urban96

bubb rubb says:"woo woooooo"

Founding Member

Sep 24, 2002

3,464

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69

Syracuse, NY

Jan 27, 2006

#5

• Jan 27, 2006

• #5

i think that the 351 heads use a larger hole and bolt but with normal gt40 heads youll be fine

 

D

db1994

New Member

Nov 17, 2004

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Lake Worth, FL

Jan 27, 2006

#6

• Jan 27, 2006

• #6

"Regular" gt-40 heads such as those that come from the factory on a 93-95 cobra have 1/2 inch holes, while the block has 7/16's holes.

You will need the insert washers if you want to do it right. 154-3605's I believe.

-Jason

 

blksn955.o

Founding Member

Mar 15, 2002

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st.louis mo 314

Jan 27, 2006

#7

• Jan 27, 2006

• #7

You only need the bolt hole spacer if the heads are off a 351. The 351 used a larger bolt hole at 1/2in the 302 uses a smaller one.

I have heads off a 95 cobra its a 302 head to a 302 block so they use the same head bolt...no need for hole spacer/tube.

FWIW spend the little extra for the ARP bolts.