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

[Dazzoman]

Originally Posted by Chevystep

Here's the right bell housing...

http://www.ebay.com/itm/like/1722504...109&rmvSB=true

After much thought I dicided to have ears tigged onto the aluminum trans front so that matched bolt holes can be fabricated to fit the 1966 bell .
This will allow me to avoid moving the excisting crossmember(s) , keep my 3 starter bolt hole old style pattern , keep my fork , and retain the protection & strength the iron bell provides as well as the mounting ears for 66 crossmember .
And yes I will also have to have the iron bell hole enlarged to fit to larger diameter throwout bearing housing nose piece (the circle outter edge ) .
One last test tho is to throw on the bell to the block and see if the NP440 will clear the fat belly it has on its frontal bottom . It might hit the crossmember , I dont know yet . Gonna do that tonight

[Dazzoman]

Originally Posted by Dazzoman

After much thought I dicided to have ears tigged onto the aluminum trans front so that matched bolt holes can be fabricated to fit the 1966 bell .
This will allow me to avoid moving the excisting crossmember(s) , keep my 3 starter bolt hole old style pattern , keep my fork , and retain the protection & strength the iron bell provides as well as the mounting ears for 66 crossmember .
And yes I will also have to have the iron bell hole enlarged to fit to larger diameter throwout bearing housing nose piece (the circle outter edge ) .
One last test tho is to throw on the bell to the block and see if the NP440 will clear the fat belly it has on its frontal bottom . It might hit the crossmember , I dont know yet . Gonna do that tonight

Heres an pic of how the old and new nose pieces are quite close yet different bolt pattern,size of O/D lip .
I am able to fit the old nose on the tranny and pop on the old bell as shown
.... the two right side bolts line up perfectly yet the left side has not even an ear lobe on the aluminum trans housing ( heh heh wait til Im done w/ it !)
....And yes the fat belly is all clear of any obstruction , Oh ya - We are on ...

[MusicMan70]

Dazzoman-

And yes I will also have to have the iron bell hole enlarged to fit to larger diameter throwout bearing housing nose piece (the circle outter edge ) .

Or just have the bearing retainer plate turned down as suggested in the article.

[Dazzoman]

Originally Posted by MusicMan70

Dazzoman-



Or just have the bearing retainer plate turned down as suggested in the article.

Music man ,
exlint ! BTW I'm an musician too :-)

Yesterday Mark Davis said to do that plus found an way to make an strap bracket to so that I can not have to weld ears on the trans ( too much heat will cook things ).
I wonder what you did for bolting trans to bell ?
For me , I would rather keep my 1966 bell and ironicly 2 of the holes line up perfect .
But we are gonna helicoil the bell so that the trans is removable .
I cant find that article you brought up .
Teddy

[hatzie]

Originally Posted by MusicMan70

Dazzoman-



Or just have the bearing retainer plate turned down as suggested in the article.

If that's possible I'd go that route. You could use socket head cap screws with heavy washers rather than hex heads for a little more clearance

OTOH I have a 16" x 42" lathe so I'm cheating.

[Blue666(2)]

Originally Posted by Ziklag

Hydraulic. It also will come with the Hurst shifter and all things in the picture.

Sir, Can you provide a picture of the slave cylinder & the bracket that mounts the slave to the bell housing?

The hydraulic parts all seem to be available on Rock Auto except the bracket.

Thanks.

[Dazzoman]

Originally Posted by Blue666(2)

Sir, Can you provide a picture of the slave cylinder & the bracket that mounts the slave to the bell housing?

The hydraulic parts all seem to be available on Rock Auto except the bracket.

Thanks.

Mine is the 1966 GMC which has the mechanical clutch . I did this the hard way by keeping my original 66 Bell- so I can keep its cross mount , starter , fork and boot in tact .
The trick was to make these brackets (pic) .
Today I found that there are two different NP440s that have 2 bolt patterns .
Mine is the off one and the one I should have gotten is the regular old pattern that is the same as the Muncie pattern .
Good news is this find here can enable you all to use any NP440 out there .
The other good news is that I found there are more out there to be found .

[Dazzoman]

Originally Posted by Gregski

can anybody help me figure out how to keep this Reverse Interlock Link from falling out, more specifically the pin that it pivots on, which sits in a hole in the side cover.

the design of it is completely illogical to me, its like hammering a nail into an existing hole, there is no anchor for it if you will, is something supposed to go into the notch in the bottom of the pin?

So reverse wont easy shift (without Hurst but with pliers) because I removed the side cover to put in an gasket ( oh what an mistake that is).
No matter how good I install it , reverse shifting is way dragging and almost grinding as I move it .
Any clues ?

[Dazzoman]

Originally Posted by Dazzoman

So reverse wont easy shift (without Hurst but with pliers) because I removed the side cover to put in an gasket ( oh what an mistake that is).
No matter how good I install it , reverse shifting is way dragging and almost grinding as I move it .
Any clues ?

Here is the latest on my 1966 GMC trans conversion of an NP440 and saving my old bell housing . SO FAR SO GOOD !
BUT .. the shifter as you can see is too far to the left ( sounds political doesnt it ?)
The knuckle is way into the floor hump(pic) and into my foot right over the gas pedal .
YA I could chop it but living with that knuckle is a bit much
DOES ANYONE HAVE AN SHIFter for sale ?

[Blue666(2)]

Your shifter backwards from mine. My reverse is on the left & forward.

did you start by placing each shift lever in the midpoints & put a screwdriver thru the shifter to center all the parts? After you get all the mid points set, install your rods.

Attach a picture & show where the problem occurs, maybe we can figure it out.

Thanks

[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

[Dazzoman]

Originally Posted by Blue666(2)

Your shifter backwards from mine. My reverse is on the left & forward.

did you start by placing each shift lever in the midpoints & put a screwdriver thru the shifter to center all the parts? After you get all the mid points set, install your rods.

Attach a picture & show where the problem occurs, maybe we can figure it out.

Thanks

Huh ?
My shifter works but its location isnt going to work with the 1966 GMC in the pic I put up here .

[hatzie]

Originally Posted by Dazzoman

Huh ?
My shifter works but its location isnt going to work with the 1966 GMC in the pic I put up here .

Would getting a differently bent stick work better or is the problem lower?

If it's the shifter itself you'll probably need to lift the body for clearance.

[Dazzoman]

Originally Posted by hatzie

Would getting a differently bent stick work better or is the problem lower?

If it's the shifter itself you'll probably need to lift the body for clearance.

I found another shifter , it works perfect .
Down side is it cost me buying an whole other transmission with bell housing package - they wouldn't just sell me the shifter .
So now I have an whole complete trans bell shifter for sale , my first one , its aluminum case .
The one I just bought is cast iron and ended putting that in the truck because its heavy duty .

[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]

Originally Posted by Dazzoman

I found another shifter , it works perfect .
Down side is it cost me buying an whole other transmission with bell housing package - they wouldn't just sell me the shifter .
So now I have an whole complete trans bell shifter for sale , my first one , its aluminum case .
The one I just bought is cast iron and ended putting that in the truck because its heavy duty .

Are you sure the Cast Iron A833 is Overdrive?

[barry1982]

I have (2) cast iron A833 overdrives. Both came factory in 1982 GMC 1/2 ton 2 wheel drives with the 6.2 liter diesel engine.

[MusicMan70]

Barry, Where was Reverse oriented on those?

[hatzie]

Originally Posted by barry1982

I have (2) cast iron A833 overdrives. Both came factory in 1982 GMC 1/2 ton 2 wheel drives with the 6.2 liter diesel engine.

4wd?

Mostly curious...

[Dazzoman]

Originally Posted by barry1982

I have (2) cast iron A833 overdrives. Both came factory in 1982 GMC 1/2 ton 2 wheel drives with the 6.2 liter diesel engine.

That is WAY encouraging because in spite of it being so darn heavy in comparison to the aluminum MY6 that means someday when I grow up I can put an V8 in it and not worry about breaking something .
This is an 1966 GMC 3/4 ton I've had since 1979 , it had an V6 in it and in 1987 I put in an 292 ( waaa? ) Yep .
Today I fired it up to see if its gonna work and so far the new driveshaft and "kit" works great at least in the driveway .
The seat and new floor jute is not in yet and today I put in new firewall cardboard I got from Bowtie bits .
Ive got bucket seats ( an bucket HA HA ha ! ) until a couple days so I can't drive it . (pics) of new driveshaft with corvette "kit " adapter so it will bolt in the carrier bearing cross member . GOOD NEWS - the new (old ) shifter WORKS PERFECT and was worth the extra dough , plus its position is almost perfect (pic)

[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.