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I think I found it! 5 speed for SLANT 6 pickups!
https://slantsix.org/forum/viewtopic.php?t=51348		 Page 2 of 2
Author:  65CrewCabPW [ Sun Mar 10, 2013 11:55 pm ]
Post subject:  Re: Lol...
Quote:
Quote:
Apparently some newer bellhousings have both bolt patterns. But, of course, they're for the LA engines.
Soooo.. That means you could use one of the LA-slant 6 adaptor plates, with the late bellhousing and the new transmission...(about $1000 for the process including the transmission...). :roll:

Truth be told, if I get my NP bell to A-833 adaptor plate figured out, this would allow another bolt pattern so the Np535 could be bolted to the Np435 bell...

-D.Idiot
If slant six adapter plates weren't made of unobtainium, the adapter plate would allow several different options, some I'd like better than the A535, like the Getrag 238, or NV3500.

Unless you know something about the availability of adapter plates that I don't...
Author:  65CrewCabPW [ Tue Mar 12, 2013 6:51 pm ]
Post subject:  Re: Lol...
Quote:
Quote:
Apparently some newer bellhousings have both bolt patterns. But, of course, they're for the LA engines.
Soooo.. That means you could use one of the LA-slant 6 adaptor plates, with the late bellhousing and the new transmission...(about $1000 for the process including the transmission...). :roll:

Truth be told, if I get my NP bell to A-833 adaptor plate figured out, this would allow another bolt pattern so the Np535 could be bolted to the Np435 bell...

-D.Idiot
BTW, how would that work?

wouldn't a plate move the transmission back too far, so that the stickout would be too short?
Author:  DusterIdiot [ Tue Mar 12, 2013 7:11 pm ]
Post subject:  Lol...
It's only a 1/2" back and in cars the shifter is under the sheetmetal "hump" and the stick has about 1" of clearance anyway in any gear from the boot edge...

I do have one aluminum "blank" with a 5.125" hole in it for a future adaptor...

:wink:

-D.Idiot
Author:  65CrewCabPW [ Tue Mar 26, 2013 11:07 pm ]
Post subject:  Re: Lol...
Quote:
Quote:
Apparently some newer bellhousings have both bolt patterns. But, of course, they're for the LA engines.
Soooo.. That means you could use one of the LA-slant 6 adaptor plates, with the late bellhousing and the new transmission...(about $1000 for the process including the transmission...). :roll:

Truth be told, if I get my NP bell to A-833 adaptor plate figured out, this would allow another bolt pattern so the Np535 could be bolted to the Np435 bell...

-D.Idiot
How thick of a plate would it take to be solid enough to bolt the trans to it?

The NP435 bell housing would have all 4 bolts for the 435 outside of the 535's face, while the bottom 2 bolts miss the case completely, it appears, and the top two would simply need to be drilled and tapped. It would only require drilling and tapping two upper holes into the bellhousing through the adapter plate. I'm just concerned about the splines meeting up, etc.

You suppose a machine shop would take .2 in off the face and the back of the bell, and keep it accurate? That would give .4 inches toward keeping the splines and pilot bearing engaged. Then you could use 3/8 -7/16 -1/2 in thick plate to make an adapter between the 435 bell and np535 and also the A833-OD. With a 1/2 in plate of good steel, you'd not need to drill and tap the bellhousing, if the bolts are not too large - say 7/16.

At least, from studying the images of the bellhousings, transmissions, etc, that's the conclusions I've made.

I've been thinking I'd try this. But I have another idea, which, is to use a U shaped bracket... big, thick stuff that has 2 legs up, a cross bar on the bottom, and bolts to the bellhousing with all 4 435 bolts, and the cross bar has holes for the bottom two 535 bolts. No real alignment issues since the back of the uprights would be precisely parallel with the bell housing face, the trans would center normally, and the two top bolts would just have to be drilled and tapped into the thick cast iron bell.

It would have to be BEEFY stuff, like 3/4 plate that's flat and accurate.
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