Engine/Transmission (1998.5 - 2002) What block is this?

[CWright]

The other day I saw a thread on the 53 block that was interesting, so I thought I would crawl under the truck and see what I had. To my supprise its like nothing I have seen before. Here is a diagram.



M9



B23K0M0





2BC 23



My truck is a 2001. 5 built in Aug. 01 HO 6speed 2 wheel dr.

If anyone has any idea please let me know.

Thanks Clayton

 

[blacksheepdiesel]

Looks to me like it is NOT a 53!!!

Godspeed,
Trent

 

[CWright]

Looks to me like it is NOT a 53!!!



Godspeed,

Trent

Hi Trent. Thats obvious just trying to find out what it really is. At least someone said something.

Clayton

 

[SHobbs]

1. Brazilian Blocks are cast by a company named "TUPY" and are marked such. They are identified with cast evolution numbers. #53's are TUPY's. #54 and later evolutions were improved to correct the block issues that the 53's had.

2. Mexican Blocks were made by "Teksid" these blocks never had a problem with cracking, as they are heavier duty by trait, but they did follow the evolutions and got thicker. These blocks do not have the 2 digit "cast number" embossed on the side, instead a series of numbers that are unidentifiable to me. The Mexican blocks were rumored to even be harder to machine do to a harder cast overall, basically better quality.



Brazilian Tupys always seem to outnumber Mexican blocks during the ISB's production probably about 8 to 1. So basically if there is a pattern number its Brazilian, if there is a series of small numbers its Mexican.



Mexican equivalent of a 56 pattern was the Heaviest ISB block of all. This means if you have a 2002 without a #56 on it and instead it has a series of numbers that are smaller and hard to identify, you got the the big boy!!!



Could it be what is called the big boy?

 

[SSolderitch]

some times you get lucky (I also did).

 

[CWright]

1. Brazilian Blocks are cast by a company named "TUPY" and are marked such. They are identified with cast evolution numbers. #53's are TUPY's. #54 and later evolutions were improved to correct the block issues that the 53's had.

2. Mexican Blocks were made by "Teksid" these blocks never had a problem with cracking, as they are heavier duty by trait, but they did follow the evolutions and got thicker. These blocks do not have the 2 digit "cast number" embossed on the side, instead a series of numbers that are unidentifiable to me. The Mexican blocks were rumored to even be harder to machine do to a harder cast overall, basically better quality.



Brazilian Tupys always seem to outnumber Mexican blocks during the ISB's production probably about 8 to 1. So basically if there is a pattern number its Brazilian, if there is a series of small numbers its Mexican.



Mexican equivalent of a 56 pattern was the Heaviest ISB block of all. This means if you have a 2002 without a #56 on it and instead it has a series of numbers that are smaller and hard to identify, you got the the big boy!!!



Could it be what is called the big boy?

SHobbs. Thanks for the reply. Being the truck was built in mexico in Aug. 01 any chance it's the big boy Or is there any way to tell? Is Teksid marked on the block anywhere? Thanks again.

Clayton

 

[SHobbs]

Clayton,



All I know is to look for the number, other than that I have no idea. I got that information from I website I found when I was looking for information on the 53 block.