Can anyone tell me if the 370 & 429 engines used the (I beleive it is called) SAE #2 clutch housing? (I think the SAE #1 is a light/conventional bellhousing like a NP 435 would bolt up to). The SAE #2 if I understand correctly is an adapter that bolts to the block
and has a large circle with many bolt holes, that bolts to the transmission 1/2 of the clutch housing. Thanks, Bob

 

[updated:LAST EDITED ON 12-Jan-02 AT 11:36 PM (EST)]SAE housing bolt patterns are perfectly round.

SAE#1 is typical of a bigger diesel, like an 8V71 or 350 Cummins. If I remember right, SAE #1 has a 20-7/8" bolt circle.

SAE#2 is similar, but not quite as large.

The higher the SAE number, the smaller it gets. A SAE#6 is only about 8" in diameter. I can dig up the exact SAE specs if you need them - I have all of the dimensions at work.

I think the 370 and 429 engine blocks used a big-block pattern, but I am not sure. I never wrenched on one. If there's two top corners to the pattern like on a 460, it's definately not SAE.

It is possible that the factory used an adapter to adapt the engine block to a SAE pattern, allowing use of a different transmission. These adapters are quite common on industrial-ized automotive engines.

Automotive engines have the clutch inside the bellhousing, where industrial/marine/big truck applications have the clutch (if one is used) and flywheel inside the flywheel housing, and a nearly flat adapter plate behind it all connecting the transmission to the engine.


Clear as mud, right???

Art

 

Thanks for the reply. Yes, I understand completely. I'll check the front of my Fuller 6sp Monday, and get the circle diameter. The 370,429 & 460 are all suppose to have the same block from all I can learn. Now I need to find out if they put an SAE clutch housing on either the 370 or 429. I am trying to get more gears behind my 460 for towing. Thanks, Bob :-)

 

Art, my measurement is approx 18.25" across the circle. Center of hole to center of hole. What SAE # housing is that please? Thanks, Bob:-)

 

Bob,

SAE #2 has twelve 3/8" holes on a bolt circle of 18.375" and a pilot (spigot) diameter of 17.625".

Art

 

Art, Thank you, Bob Elliott

 

 

Ah, so a 6.9 diesel is SAE #2 pattern? I measured the holes on the block and do not come up with those measurments... Thanks

 

Not an SAE pattern, it's IH's pattern.


https://www.ford-trucks.com/forums/2...terchange.html

 

oh so i will have to find an IH transmission housing ? anyone know the correct one? thanks

 

What are you trying to do? There are bell housings for that pattern, and there are transmissions with integral bells for that engine, both found in Ford trucks issued with that engine.

 

im tryin to mount up a 6.9 international diesel in place of a case a336bdt diesel in my backhoe. anyone know what adapter i will need and if its even available to get the trans connected to this 6.9?

 

I'm pretty sure no one knows.

What is the pattern in the backhoe? Is it an SAE pattern, or proprietary to Case?

If it's SAE, you may find an adapter ring in an IH truck that used the 6.9 or 7.3.

 

Ya its sae 2 so im thinking i will get a flywheel housing for a idi or 7.3ps and use that and it looks like i need to adapt the ones i can find from 3 to 2 with a ring.