What can be said about the 4-speed New Process NV833 overdrive manual transmission?

[A1971Blazer]

I posted this thread last week..........

http://67-72chevytrucks.com/vboard/s...d.php?t=717869

about a short bed GMC my friend had when he died suddenly............
I knew it had that 4 speed OD transmission but I wasn't familiar with it........ so I was unsure as to what exactly it was....now I know....

This truck is way too solid to go to the scrap yard......

[Blue666(2)]

You can also use a Hurst Competition Plus. Here's on near you. https://sfbay.craigslist.org/sby/pts/5788512251.html

[Dazzoman]

Originally Posted by Blue666(2)

You can also use a Hurst Competition Plus. Here's on near you. https://sfbay.craigslist.org/sby/pts/5788512251.html

Thats (on the link you sent me ) an early Corvette application shifter , not the NP440

[D13]

Cast iron 2wd? Because I've not seen that in GM. All the 2wd ones I've seen are aluminum and 4wd cast iron.
I personally believe that the 4wd shifter sits slightly left to make room for the t-case shifter. Some day I'll go thru my pile o parts and prove / disprove. The Competition Plus note above it that people are taking the regular pattern Hurst A-833 Mopar shifter and modding it for the OD trans.

You may have a Dodge trans. Does it have the same input / output shaft splines and lengths? Or maybe just a Dodge shifter....
I've toyed with swapping my 2wd guts into my CI 4wd case, just to eliminate the housing bore wear issue.

And as I thought about it I suspect your trans hump is narrower than the later trucks. The high hump version of those were set up to accept any trans and with the transfer case package.

[Dazzoman]

Originally Posted by D13

Cast iron 2wd? Because I've not seen that in GM. All the 2wd ones I've seen are aluminum and 4wd cast iron.
I personally believe that the 4wd shifter sits slightly left to make room for the t-case shifter. Some day I'll go thru my pile o parts and prove / disprove. The Competition Plus note above it that people are taking the regular pattern Hurst A-833 Mopar shifter and modding it for the OD trans.

You may have a Dodge trans. Does it have the same input / output shaft splines and lengths? Or maybe just a Dodge shifter....
I've toyed with swapping my 2wd guts into my CI 4wd case, just to eliminate the housing bore wear issue.

And as I thought about it I suspect your trans hump is narrower than the later trucks. The high hump version of those were set up to accept any trans and with the transfer case package.

I will put on an photo comparison for all to see the difference between the 2 MY6's .This one had one difference and that could be Hurst's design and that is the reverse is L and down unlike the aluminum trans R and down .
My input and output splines are all chevy, it all bolted right in yesterday .
Had to buy a kit to make the driveshaft work , had that chopped too .
tomorrow I shoudl have it running and cross my fingers it doesnt blow up and cause the obamas to visit me from another planet telling me I committed hary carrie .

[hatzie]

I wouldn't worry about the Aluminum case A833 breaking behind a V8. The case is a much thicker casting than the CI unit. Chrysler used the Aluminum case behind the B400 & 440. You will not break one easily. The heavier wall AL casting makes the external dimensions larger and is probably some of what caused the shifter to not fit well in your 1966.

The only mild problem with the AL cases is there's no bushing on the floating countershaft so they tend to wear at that point. You can get them align bored and bushed by a competent machinist and I highly recommend that operation on an AL case A833 that you intend to drive a lot.

http://www.hotrod.com/articles/mopp-...-case-buildup/

[barry1982]

Reverse on my cast iron A833's is to the left of 1st and up. Strange.... but that's where it's at. Both trucks are two wheel drive. I am actually in the process of restoring one of them. I was in a head on collision with the other in the early 90's, and just kept it around as a parts vehicle. The accident was so bad, the aluminum bell housing broke when the frame twisted.

[hatzie]

Originally Posted by barry1982

Reverse on my cast iron A833's is to the left of 1st and up. Strange.... but that's where it's at. Both trucks are two wheel drive. I am actually in the process of restoring one of them. I was in a head on collision with the other in the early 90's, and just kept it around as a parts vehicle. The accident was so bad, the aluminum bell housing broke when the frame twisted.

That's a function of the shifter not the transmission.
The rev rod can be hooked to either the LH or RH paddle of the three. If the paddles are setup for Rev on the Left it'll be on the Left. Stock A833OD reverse lever should be the RH paddle putting Reverse on the Left side of the pattern.
Up or Down could be controlled by attaching the slotted chunk of steel rotating lever to the reverse fork stub with the relay rod above or below the fork. Stock should be above meaning you push the shifter up or forward.

This is not a Ford T10 or Saginaw 4 speed. Reverse is Left & down on those.
Muncie and some GM T10 transmissions have the same pattern as the A833 & A833OD.
Get the right knob or dash decal and drive it. I have seven manual transmission road vehicles and two farm tractors they are almost all different in some minor way.
Shift pattern on the A833OD is a standard H pattern 4 speed... Left and Up Rev, 1 Up, 2 down, Right & Up 3, Right & down 4.

[MusicMan70]

Hatzie, this was posted by Dazzoman on another thread.
I believe he said it was from a 4wd Van application.

[hatzie]

Originally Posted by MusicMan70

Hatzie, this was posted by Dazzoman on another thread.
I believe he said it was from a 4wd Van application.

That's a 2wd transmission. Only way that's 4wd is a divorced transfer case.

[Dazzoman]

Originally Posted by barry1982

Reverse on my cast iron A833's is to the left of 1st and up. Strange.... but that's where it's at. Both trucks are two wheel drive. I am actually in the process of restoring one of them. I was in a head on collision with the other in the early 90's, and just kept it around as a parts vehicle. The accident was so bad, the aluminum bell housing broke when the frame twisted.

Yes the reverse is the same on mine as well ....Interesting - I hope I or someone els who drives it won't think R is 1st LOL !
I will be selling the aluminum unit with aluminum bell housing and floor shifter for $1k . IT has all new gaskets, seals , o rings ready to go .

[D13]

Originally Posted by hatzie

I wouldn't worry about the Aluminum case A833 breaking behind a V8

Please, NO! The early 440/Hemi 833's and these are NOT the same! The overdrive swap reduces the torque capability dramatically. These were NEVER factory offered with anything stronger than a 305. They were not available with 350's or 454's because they simply will not hold up to the torque.

If you ever swap in a 350 you will need to swap out the trans unless you drive very light footed, in which case why did you put in a 350?

[hatzie]

Originally Posted by D13

Please, NO! The early 440/Hemi 833's and these are NOT the same! The overdrive swap reduces the torque capability dramatically. These were NEVER factory offered with anything stronger than a 305. They were not available with 350's or 454's because they simply will not hold up to the torque.

If you ever swap in a 350 you will need to swap out the trans unless you drive very light footed, in which case why did you put in a 350?

I have run the AL case A833 OD behind 318 & 340 V8 motors in 1/2 ton 2wd Dodge trucks with no problems whatsoever. I wouldn't be worried about a standard or mildly modified 350 at all.

It's not magic. They use the standard 4th gear as 3rd and changed the output ratio of 3rd gear. The angles of the gears are the same and the case is a heavier wall casting.

[hatzie]

Yep. It's all in the shifter and linkage.

The paddles tell which side reverse is located and the rotating lever selects whether you push up (forward) or pull down (back).

This linkage has Rev on the LH paddle and the rotating lever is aimed down so Reverse is Right and pull down (back).
If you used this "down" Rev rotating lever on one of the RH Reverse paddle shifters it would place Reverse to the Left and Down.

[Dazzoman]

Originally Posted by hatzie

Yep. It's all in the shifter and linkage.

The paddles tell which side reverse is located and the rotating lever selects whether you push up (forward) or pull down (back).

This linkage has Rev on the LH paddle and the rotating lever is aimed down so Reverse is Right and pull down (back).
If you used this "down" Rev rotating lever on one of the RH Reverse paddle shifters it would place Reverse to the Left and Down.

All true , but on my cast iron MY6 you don't get to swap that feature on the reverse , I tried and it wont shift .
This is all for 2 w drive I think .

[hatzie]

Originally Posted by Dazzoman

All true , but on my cast iron MY6 you don't get to swap that feature on the reverse , I tried and it wont shift .
This is all for 2 w drive I think .

You need the push forward (rod on top) or pull back (rod on bottom) rotator levers with the correct mating paddles and rods.
They are a mated set. 'Swhy it's so much fun when one piece goes AWOL. I doubt you can just flip em 180° and have the relay rod line up. Sorry I wasn't clear.

[mr.chevy]

Well this is an interesting thread. I am building a 1967 Chevy C20 that has been shortened and converted to a C10 suspension. Has a 327 and about 7 years ago I bought a steel housing new process 833 OD trans of a guy on the local classifieds for 75 bucks. Everything but the bell housing included. Put a want add for one and picked it up for 50 bucks. Bought a cross member from classic performance products that was for an automatic trans and a mount for it and it all fit in prefect. Shifter will work with the bench seat. The bell housing I managed to get has a slave for a hydraulic clutch so that's what's going in it.

Lots of good info on this thread!

[Dazzoman]

Does anyone know if the reverse light switch can be made to work ? MIne works when it wants to ...
Dazzoman

[hatzie]

Get a new switch.

[Dazzoman]

Originally Posted by hatzie

Get a new switch.

OK thanks .

[Chevystep]

Bell housing and fabbed up dust cover...

[Hewfil1]

Just gonna throw a post in here to keep it on my back burner.

[LEEVON]

Selling my complete NP833: http://67-72chevytrucks.com/vboard/s...97#post7773897

[MusicMan70]

That link didn't work for me so I'll repost what did.

http://www.67-72chevytrucks.com/vboa...d.php?t=723002

That is a killer deal for a complete unit.

[65Robb]

So i got almost everythimg i need for my install just got a question did anyone that has done this install use a crossmember an have to move the stock e brake crossmember?