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isn't the back of the cummins a sae size?
The physical back of the cast iron block is a Cummins B series bolt pattern. The aluminum part that bolts to the back of the block that permits a Dodge bellhousing to be attached is what we call the "engine adapter" which is also known in other parts of the world as the flywheel housing.
 

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Clueless

You didn't get your question answered.................

The 6 BT Cummins will allow you to use either an SAE #1 (15.5" clutch) or SAE #2 (14" clutch) or any number of after market adapters that bolt up to the back of the Cummins engine block.

You can find 13 different transmissions adapters for Cummins at http://www.destroked.com/parts.shtml

and you can see a SAE #2 installed on a Dodge 3500 at http://www.sanco-bg.com/Installed Flywheel Cover_small.JPG.

Flywhell housing part numbers are found at http://www.sanco-bg.com/NV5600_Conversion_parts_list.htm

Good Luck
 

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You didn't get your question answered.................

The 6 BT Cummins will allow you to use either an SAE #1 (15.5" clutch) or SAE #2 (14" clutch) or any number of after market adapters that bolt up to the back of the Cummins engine block.

You can find 13 different transmissions adapters for Cummins at http://www.destroked.com/parts.shtml

and you can see a SAE #2 installed on a Dodge 3500 at http://www.sanco-bg.com/Installed Flywheel Cover_small.JPG.

Flywhell housing part numbers are found at http://www.sanco-bg.com/NV5600_Conversion_parts_list.htm

Good Luck
The original question was "anyone know the sae bellhousing size for a 5.9l cummins in a dodge 2500?"

The correct answer is Dodge does NOT install a factory SAE flywheel housing/engine adapter in a pick up truck.

Your answer is correct as to what will bolt to the rear of the B series Cummins engine block. Folks were thinking the round pattern used on the factory Dodge bellhousing was an SAE pattern.
 

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sae#

they really only market a #2 and #3 housing the #1 is used for a Komatsu application and it is very expensive...won't work with anything other than the Komatsu flywheel and it has a weird offset. they do however offer a number of adapter plates as Bob mentioned..
 

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I am currently trying to convert my jcb fastrac from a Perkins phaser engine to a 6bt cummins but could do with some help in finding out about engine adapter plates if anyone on here has any knowledge on them would really appreciate it basically want to know weather 6bt out of daf 45 will bolt straight onto gearbox many thanks in advance
 

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So, what does the front of your gearbox look like? Is it SAE or? There are SAE #2 clutch housings with retainer hole and a bolt pattern for a trans., I have 2 if you would like a px.

Ed
 
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