How can I find out bolt sizes?

StreetDreamsGT

New Member

Mar 6, 2003

449

0

0

New Jersey

Dec 30, 2005

#1

• Dec 30, 2005

• #1

Hey guys, I bought a rebuilt engine then I bought a rebuilt transmission (bought em from two separate ppl) anyway, now I wanna bolt em together so I can drop it all into a car but I don't have some of the bolts off the trans, I really haven't checked to see what all i'm missing but I am going to definitely need the bolts from the bellhousing to the engine. Does anyone know a site I can find out the bolt sizes I need?

 

5.02GO

Founding Member

Jun 26, 2001

308

0

16

Ky, Blue Sky Country

Dec 30, 2005

#2

• Dec 30, 2005

• #2

Not sure what size they are, but i am sure they are metric.

Maybe 10mm-1.5 or 12mm-1.75 could even be 14mm-2.0

 

pb_paulie_b

Founding Member

May 19, 2001

894

0

0

Chaptico, Maryland

Dec 30, 2005

#3

• Dec 30, 2005

• #3

5.0 motor to tranny bolts are 16mm or 5/8.

 

bobcatv8

Member

Aug 25, 2004

141

1

16

Ocala,FL

Dec 30, 2005

#4

• Dec 30, 2005

• #4

All small block Fords that I've ever seen are 7/16. You want them about 7/8' to 1" longer than the thickness of the mounting boss on the trans to go through the block plate and into the block itself.
Never knew any 302 or 351 to have any metric thread tapped into it.
{7/16 is the bolt and thread size, not the wrench size, that's the way fasteners are catagorized.}

 

pb_paulie_b

Founding Member

May 19, 2001

894

0

0

Chaptico, Maryland

Dec 30, 2005

#5

• Dec 30, 2005

• #5

 

StreetDreamsGT

New Member

Mar 6, 2003

449

0

0

New Jersey

Dec 31, 2005

#6

• Dec 31, 2005

• #6

bobcatv8 said:

All small block Fords that I've ever seen are 7/16. You want them about 7/8' to 1" longer than the thickness of the mounting boss on the trans to go through the block plate and into the block itself.
Never knew any 302 or 351 to have any metric thread tapped into it.
{7/16 is the bolt and thread size, not the wrench size, that's the way fasteners are catagorized.}

Click to expand...

ok I searched a bit more and came up with this
7/16-14 X 4
my question is, are the bolts all the exact same size?

 

bobcatv8

Member

Aug 25, 2004

141

1

16

Ocala,FL

Dec 31, 2005

#7

• Dec 31, 2005

• #7

Sorry, I'm not familiar enough with AODs. Never owned one.
Just get a tape measure and measure the bosses that the bolts pass through. I think C-4s are all the same length so AOD might be too.

 

StreetDreamsGT

New Member

Mar 6, 2003

449

0

0

New Jersey

Jan 12, 2006

#8

• Jan 12, 2006

• #8

ok I definitely think I bought the wrong bolts, I got em 7/16 4" in length coarse thread but there's only about an inch and a half of actual thread, does this sound about right? If I need to i'll take a picture. What about the bottom two bolts that are smaller, anyone got the size for them? Also how many bolts total are there supposed to be that hold the bellhousing to the engine? As it is I am missing the 2 starter bolts and am trying to figure out what all the holes are for, thanks guys.

 

J

Jack's95gt

Member

Aug 15, 2004

443

1

18

Huntingdon Valley, PA

Jan 12, 2006

#9

• Jan 12, 2006

• #9

The trans to engine bolts are the same thread as the shorter head bolts. You can just cut them down to fit.