Slant 6 & A833

[Travis G.]

Hey ya'll, I have a 65' Valiant 4 door with bench seats & 225 Slant 6 (original motor). I found a good deal on a A833 with bellhousing and all. The problem is it is out of a 1980 D100 w/ slant 6. I found a lot of info but still curious on a few things,

- I will have to turn down the input shaft on the trans to fit my small pocket crankshaft right?
- Is the trans mount in the same location?
- Will my trans tunnel fit this or need cutting?
- Does the 80's D100 trans have a shifter pad that could even work with my sedan & bench set up or will it take a lot of moding?
- Does anyone no whether the output shaft is a slip yoke or...?

I have a working 904 but I do want to manual swap and would like to keep it all Mopar. I know this isn't the perfect trans for my valiant but these A833 are getting tough to find for the Slants and I'm not the richest man so this is a deal I might not want to turn down if possible.

I attached the two pics the seller has sent me

 

[RustyRatRod]

No, the input shaft should be the same diameter. Maybe what you're referring to is when people put a manual transmission behind a cast crankshaft not drilled for one. In that instance, you normally have to trim about 3/4" off the end of the input shaft, but to my knowledge, you don't have to turn anything down. The 833 was a transmission option for the early A with a slant 6, although somewhat rare.

 

[Professor Fate]

- I will have to turn down the input shaft on the trans to fit my small pocket crankshaft right?
- Is the trans mount in the same location?
- Will my trans tunnel fit this or need cutting?
- Does the 80's D100 trans have a shifter pad that could even work with my sedan & bench set up or will it take a lot of moding?
- Does anyone no whether the output shaft is a slip yoke or...?

-No. The input shaft remains the same. It's the pocket in the crankshaft flange that needs to be modded for later automatic modifications. The input is sometimes shortened to fit crankshafts that are not drilled for a pilot bearing, and then use the late model roller style pilot bearing that seats in the convertor hub of the crank. However, this bearing will not fit in your early style crank without machining the flange.
BTW; I believe the centering register on your crank is too small for the late model flywheel.
-Trans mount is in the same place. However, the shifter mount is in the wrong location for an A body- it places the shifter right where your crossmember is. The tailshaft is also the longer B/C/E/truck length and not the shorter A/F
-You will need to cut your floor and install a four speed hump.
-The output of the truck trans. is a slip yoke. Your trans/driveshaft is a ball and trunnion (flange) type.

There are many other differences, including clutch linkages, speedometer drives, etc. It can be done; but all in all, you'll probably be better off finding an A/F body setup. Much fewer changes to make it work.

 

[halfafish]

@Travis G. , there is good advice with all the above, especially the hassle factor of getting a truck trans in an early A. Also be advised, that trans is almost certain to be an OD unit. Slants in a truck in the 80's came from the factory with the 833OD trans or the NP435, which is a top loader granny gear unit. You may or may not want the OD version, but it's worth checking out to make sure it's in your plans.

Also, I'm trying to send you a PM but your inbox is full. Can you clean it out and shoot me a PM please?

 

[Travis G.]

Thank you all for the advise, unfortunately I might need to pass on this trans and continue the never ending hunt for a 4 speed that doesn't cost the price of the car.

@halfafish Just emptied my inbox.

 

[Killer6]

Thank you all for the advise, unfortunately I might need to pass on this trans and continue the never ending hunt for a 4 speed that doesn't cost the price of the car.

@halfafish Just emptied my inbox.

If You don't mind sharing, what price range do You consider acceptable??

 

[volaredon]

Yeah they have gone crazy in the last few years.
Can you get the truck trans reasonable?
You can use the bell housing and such, for the short tail version. The rear mount/ crossmember will be the same location.
I believe there may be an adapter ring that you can get that will center that flywheel as it should be.
It seems I just read where someone here was wanting to do the same swap the opposite way, older trans to newer crank.
Another thread I saw (don't know if it was here) about someone wanting to put a short tail version of that trans in a truck. Seems you all need to get together and swap parts, as you have what they need and they actually have what you need.
That said I have put the short A/F body version of that trans in a truck back in the early 90s.... it got done but I don't remember all the details, or what all I had to make/modify.

 

[66fs]

It will take a bit of parts and work. I am also not sure what it would take to put it in an early A. I did it back in the 70's but can't remember what I did. It looks like you would get the right bell housing but double check the casting number before you buy. The O/D 26 spline main shaft and tail housing will get you easily and relatively cheaply into a early A body. But I am not sure about the clutch fork and linkage in an Early A with the newer bell housing.

Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists
Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists
Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists

 

[sireland67]

I have an early A ball n trunion, and a A body od unit here in WV, reasonable.
Message me if interested.