Another A833 question

[Oldriginal86]

Thinking of making the swap from 700R4 to A833, will I need to cut the floor and put a bolt in hump? Going to look at the trans today so I will try to get as many of the parts I need off the donor truck.

[hatzie]

I would guess that all you need is a slot for the shifter and the clutch parts.

[MalibuSSwagon]

Depending on the year of the donor and your truck, the hump might be welded in. Later trucks were one piece stampings with the floor pan I believe.

Manual trans truck all had high hump floors.

If you are getting everything from a donor truck, get everything. Crossmember, driveshaft, don't skimp or you'll regret it later. I bought just the transmission and bellhousing off craigslist for $70. Granted I got lucky and am getting a deal on the parts I'm missing, plus it's not going into a square, so it could have been much more expensive being an incomplete trans.

[D13]

Remeber shifters are Hurst, unique for this application, and there is no direct aftermarket bolt in.
Also bell housings 'may' be unique dependingon exactly which year the trans came from.
And yes, you wil need t oget a high hump. Would not hurt uif you can cut the floor out of the donor, get all the way to the firewall kick up to make it easy to locate the hole.

[Keith Seymore]

Mine is the high hump, but stamped floor (not bolt in).

Originally Posted by MalibuSSwagon

Floor shifted Manual trans truck all had high hump floors.

Very slight clarification. The 2wd M62/M64 (three on the tree) would have a low hump floor.

K

[ElGracho]

Originally Posted by Keith Seymore

...
Very slight clarification. The 2wd M62/M64 (three on the tree) would have a low hump floor.
K

I was just about to type that. My 84 with the 3 speed has a low hump.

[aotte1]

Like Keith's my 86, is high hump welded in too. I have a few pics on my build of shifter, etc. Can get some more next week too, if needed. It is a hydraulic clutch, left side on bell housing.

I got hose, line and two cylinders new from Fisher Auto Parts - Federated Auto Parts for 86'. The fire wall cylinder comes with a rod, that connects to the clutch pedal. Trying to remember how the lower cylinder mounts?? think it bolts to bell housing or something, and their is a small rod that goes from cylinder to clutch fork. Can look for sure next week if needed. let me know.

I may have a few more pics I can post, before going to see truck at body shop next week.

Les

[aotte1]

Shifter hump picture, 86' C10 SB SS

[aotte1]

Firewall pics,

[aotte1]

Another firewall pic close-up

[67swb72klb]

I like the idea of only 4 gears and o/d

[aotte1]

One more pic of fire wall set-up.
I can email text picture to you if you need one you can expand for more detail.
Hydraulic cylinder is in center, with lines going down to lower cylinder, fluid reservoir is up and to right.

Les

[Keith Seymore]

Originally Posted by 67swb72klb

I like the idea of only 4 gears and o/d

To be honest, it would be nice to have one more gear on the low side.

Launching with a trailer is a bit tricky with the current set up.

But - it's such a sweet little trans that I am not bothered enough to do anything about it.

K

[MalibuSSwagon]

Keith, I meant to ask, would you recommend towing in overdrive with the A833?

[hatzie]

When I still had it... I swapped the Saginaw 3 speed in my 73 C10 for a Saginaw 4 speed out of a car and didn't change the floor at all.
The A833 isn't significantly larger. Will it hit the low hump floor or can he forgo the high hump tunnel?

[Keith Seymore]

Originally Posted by hatzie

When I still had it... I swapped the Saginaw 3 speed in my 73 C10 for a Saginaw 4 speed out of a car and didn't change the floor at all.
The A833 isn't significantly larger. Will it hit the low hump floor or can he forgo the high hump tunnel?

The Saginaw was the aformentioned M62/M64 low hump configuration (different first gear ratios). I had a Saginaw 4 speed in my 80 pickup (3.11 low gear).

I'm not sure if the A833 would actually fit but the hump was provided because of the shifter, or if the body guys were just being especially conservative.

Might be able to get by with a low floor but require a larger cutout for the shifter.

K

[Keith Seymore]

Originally Posted by MalibuSSwagon

Keith, I meant to ask, would you recommend towing in overdrive with the A833?

Sure - if you have the torque to pull it (most of the towing I do is 4500 lbs or less).

With the V6 I have to drop down to 3rd (1:1) to keep my speed up on some occasions.

K

[aotte1]

Keith,
Sort of on the overdrive question, I was told by a Chrysler transmission professional that the trans is good for up to about 300 Hp including some level of power shifting. If you granny shift it, reasonable higher HP is not an issue. Any knowledge of what are it limits.

Les

[Keith Seymore]

I do not know.

I suspect it is different for the cast iron MOPAR 1:1 transmissions vs our aluminum case with the overdrive.

I know of some MOPAR guys that race these transmissions but can't comment on horsepower levels (or amount of maintenence).

No mention of horsepower limitations in my favorite A833 link: http://www.customclassictrucks.com/t..._transmission/

K

[Oldriginal86]

Looked at the trans on Sunday. Shifter and shift rods as well as the bell housing are there. Downside is the bolt on handle is gone and bell housing was broken where the slave cylinder mounts. I believe this could be welded. The truck did have the high hump in the floor however is was badly damaged in the crash. Checked out the pedal assembly and it was bent also. Told him I would get back to him as his asking price is near a good 700R4.

[special-K]

Get him down on his price. Tell him his price is good for complete changeover and his is partial. Those are the essential parts that he has,though,so a great start. The shift lever should interchange with other Hurst levers.

Someone said it would be nice to have 4 speeds plus overdrive. Well,that wouldn't be this transmission. This one is 3 speeds plus overdrive.

[Keith Seymore]

Originally Posted by special-K

Someone said it would be nice to have 4 speeds plus overdrive. Well,that wouldn't be this transmission. This one is 3 speeds plus overdrive.

I think he meant 4 gears, with one of them being overdrive (4 total).

That's how I interpreted it, anyway.

K

[67swb72klb]

Originally Posted by Keith Seymore

To be honest, it would be nice to have one more gear on the low side.

Launching with a trailer is a bit tricky with the current set up.

But - it's such a sweet little trans that I am not bothered enough to do anything about it.

K

seems like a sweet trans and the more I hear I want one!
a friend of a friend has one of these 883's but no shifter and still want's like $350

[D13]

I paid $250 each for mine some years ago, with shifters and bells. 1 4wd mech clutch and 1 2wd hydro clutch. Another $75 for hydro pedal and cylinders, $50 for bolt in high hump. And some day i'll get around to installing one behind the L6.

I personally wouldn't trust a welded up slave ear, but maybe a hydo throwout bearing conversion would work.

The shifter handle I think is not unique, but the mechanism seems to be. And 4wd one seems beefier but off to the side, probably to clear the t-case shifter.

As far as capacity, remember these were never offered behind anything stronger than a stock 305, and never in a 3/4 ton. The gear swap and aluminum case greatly reduced the torque capacity. For my 6.2 diesle this is in the 150hp / 250 lb-ft torque range. These are NOT the A833 Hemi boxes!

[Rubble]

(QUOTE D13)
As far as capacity, remember these were never offered behind anything stronger than a stock 305, and never in a 3/4 ton. The gear swap and aluminum case greatly reduced the torque capacity. For my 6.2 diesle this is in the 150hp / 250 lb-ft torque range. These are NOT the A833 Hemi boxes![/QUOTE]

They were offered in a 3/4. 4x4 version as well,My 82 6.2 is that combo & I remember seeing a brand new 83 same combo as mine.