Manual trans question

[CG]

I know close to zero about any 4speed trans for the 67-72 trucks except for the stock versions only. What would be the go to later model trans that would bolt up to the small block and 205. I see a lot of numbers, but just when I think I know what's what ... I don't haha!

[mongocanfly]

I think from the old sm465 4spd they went to the nv4500 5spd

[Mike C]

With factory parts, the SM465 is the only 4 speed manual that bolts up to a 205.

[CG]

Ok, interesting. So the NV 4500 would be the best upgrade, but would need some sort of adaptor or change in shaft/coupling somewhere to work with the 205.

[mongocanfly]

Advance adapters makes a kit to do a nv4500/205...but neither the trans or adapter are cheap..
I've got 2 nv's and love em..

[sweetk30]

Originally Posted by Mike C

With factory parts, the SM465 is the only 4 speed manual that bolts up to a 205.

NOT true . there was the rare car manual that went to the 205 . but there rare . only read of a few and personally seen 1 my self .


but yes the most super common is sm465 trans with 205 .

the replacment was in the 90's with the new nv4500 with overdrive . but that was never a 205 behind it in gm combo . but with the correct parts it can be a bolt on combo .

[Zoomad75]

A late round pattern 205 bolts up to a nv4500 without the uber-expensive AA adaptor. Plus you don't have to chop 4" off of the nv4500 to make it work either.

The a883 od trans was the oddball car trans that was sold in the Squares. It was basically a 3 speed manual with OD. Wasn't sure is was available in the 4wd trucks though.

[74CustomK20]

Zoomad it was, but only in light duty's as it's not nearly as strong as the 465

['63GENIII]

The AA bell housing for the 4500 is a piece that they are pretty proud of too. It lets you move the slave cylinder to the familiar driver's side location.

Early 4500s had the lower 1st gear and non synchro reverse. Later has the higher 1st (less granny like) and the synchro reverse.

Personally I felt that the 465 was a stronger transmission than the NV4500....but.... the extra gear won me over in the end. It hasn't broken with the abuse I throw at it on occasion and the shifting?What an upgrade! Man, compared to the 465 its like the difference between a new Porsche and a '60 VW bug.

I ran a divorced 205 out of a Power Wagon. Mainly because I was too lazy to find the later round style 205 and I had the divorced one in the garage.

[57NAPCO]

Just curious, gear vendors was not an option?

Originally Posted by '63GENIII

The AA bell housing for the 4500 is a piece that they are pretty proud of too. It lets you move the slave cylinder to the familiar driver's side location.

Early 4500s had the lower 1st gear and non synchro reverse. Later has the higher 1st (less granny like) and the synchro reverse.

Personally I felt that the 465 was a stronger transmission than the NV4500....but.... the extra gear won me over in the end. It hasn't broken with the abuse I throw at it on occasion and the shifting?What an upgrade! Man, compared to the 465 its like the difference between a new Porsche and a '60 VW bug.

I ran a divorced 205 out of a Power Wagon. Mainly because I was too lazy to find the later round style 205 and I had the divorced one in the garage.

[sweetk30]

Originally Posted by Zoomad75

A late round pattern 205 bolts up to a nv4500 without the uber-expensive AA adaptor. Plus you don't have to chop 4" off of the nv4500 to make it work either.

The a883 od trans was the oddball car trans that was sold in the Squares. It was basically a 3 speed manual with OD. Wasn't sure is was available in the 4wd trucks though.

if i recall 100% you still need to swap to a short 32 spline input gear over the gm round 6 long input . otherwise the spacer is still needed to let it bolt up from the length of the input gear .

[SunSoaked]

Originally Posted by sweetk30

if i recall 100% you still need to swap to a short 32 spline input gear over the gm round 6 long input . otherwise the spacer is still needed to let it bolt up from the length of the input gear .

True statement Sweetk30. I have two of them. 1.625 thick.

[Zoomad75]

Originally Posted by sweetk30

if i recall 100% you still need to swap to a short 32 spline input gear over the gm round 6 long input . otherwise the spacer is still needed to let it bolt up from the length of the input gear .

Pretty easy fix with a phone call to ORD.

[sweetk30]

Originally Posted by Zoomad75

Pretty easy fix with a phone call to ORD.

yes thats true sir . just clearing up the not stock for stock bolt up no adapter thing for others searching later .

[zac]

As far as I have been able to figure, the A833 was on ‘80-‘85 2wd half tons only. I’ve been looking for one for a street rod project...

The best truck manual trans I’ve ever had was in a ‘76 Scout II 2wd (yes). I think it was a B/W T19 close ratio. Full synchro, perfect for a 1/2 ton daily driver. But no sensible way to adapt it for use on a Chev 4wd that I could ever figure out

[B. W.]

The 833 was in some 4x4 square bodies. Had a cast iron case vs aluminum.

[sweetk30]

Originally Posted by B. W.

The 833 was in some 4x4 square bodies. Had a cast iron case vs aluminum.

yep friend of mine had a 6.2/833/208/k10/short step side one years ago .

[zac]

You know what year it was? I've never even seen one...

[mongocanfly]

I've never heard of the a833 in a chevy truck either...not saying it didn't happen...just never seen it....when I google it ,it shows it to be a side shifter....and belonging to dodges...then after some reading I saw on hamb where they said Chevy used some dodge trans in some trucks and vans...and this.....http://www.classicjunkyard.com/new_process_a833.htm
My 86 had a sm465

[95 S_Trucker]

Originally Posted by mongocanfly

I've never heard of the a833 in a chevy truck either...not saying it didn't happen...just never seen it....when I google it ,it shows it to be a side shifter....and belonging to dodges...then after some reading I saw on hamb where they said Chevy used some dodge trans in some trucks and vans...and this.....http://www.classicjunkyard.com/new_process_a833.htm
My 86 had a sm465

There are a bunch that came from the factory. I work on an 86 k10 with one regularly.

http://67-72chevytrucks.com/vboard/s...d.php?t=670789

[mongocanfly]

yeah...I need to get out more I guess...haha

[burnin oil]

The Saginaw 4spd car transmission was also an option. I have seen it once. That said the 3spd and 4spd saginaws shared a common case and main shaft. Different gears and side cover/shifter. So if you find a base model 6 cylinder column shift you can rob the 3spd and rebuild it installing the 4spd gears on the original main shaft. neither are terribly expensive and pretty cheap to rebuild if it breaks. The 1974 or 1977 chevy service manual actually has pictures of all the factory adapter plates and which transmissions and transfer cases that they fit. Obviously these are pre round pattern, 5spd, or alum transfer cases.

For fun I have run (still own it sitting in the barn) a 465 to NP203 factory adapter. that was a real nice setup if you lived in an area that had alot of black ice during the winter.

[Travisarmenta]

Originally Posted by burnin oil

The Saginaw 4spd car transmission was also an option. I have seen it once. That said the 3spd and 4spd saginaws shared a common case and main shaft. Different gears and side cover/shifter. So if you find a base model 6 cylinder column shift you can rob the 3spd and rebuild it installing the 4spd gears on the original main shaft. neither are terribly expensive and pretty cheap to rebuild if it breaks. The 1974 or 1977 chevy service manual actually has pictures of all the factory adapter plates and which transmissions and transfer cases that they fit. Obviously these are pre round pattern, 5spd, or alum transfer cases.

For fun I have run (still own it sitting in the barn) a 465 to NP203 factory adapter. that was a real nice setup if you lived in an area that had alot of black ice during the winter.

I have been trying to figure this out as well. I picked up a 70 SB 4x4 but it has the M330 in it, with the 205, since it has the factory (dated 12/30/1969) NP205 it must be the 10 spline input shaft. But can't figure out if that is the case.

[burnin oil]

I am unsure what trans you have. The old manual I have lists all the transmissions by MM. The only 3 speed trans that I know of called a HD was a Muncie which I never saw hooked to a transfer case.

The only sure fire way to gaurentee what you have for an input gear is to pull it out and have a look. It should be a 10 spline. supposedly all the old manuals had a 10 spline input gear until the round pattern NP205s game out in the 80s. It has been a long time since I looked at a factory 3spd in a 4x4 and I do recall one application using a gear on the outside of the case for the input. I want to say it was a Dana 20 transfercase.

If this was me I wouldnt waste my time swapping any of the 3spd transmissions into your truck. The 465 4spd is a beast and almost impossible to break. it was used in 1/2t up to a C50 or C60 series trucks. All the internals were identical other than the input gear and rear yoke. These are so solid that they are basically give aways at the junk yard and usually found with the trans and tcase still bolted together. Alot of times you can score them both for under $500.

If I was to spend the money it would be the NV4500. The extra gear comes in real nice on the interstate. The only downside is the low granny gear. If you dont need it then you are stuck with a 3sp and OD gear. I personally use the granny gear all the time but I also live on a mountain.

Usually GM was really nice to us and used the adapter plates to adjust the overall lentgh of the drivetrain which allows you to swap the trans and use the same driveshafts as long as the transfer case stayed the same. Cross your fingers on that.

[D13]

A-833 was available in 2wd or 4wd. AS far as I can tell all the 2wd were aluminum, 4wd could be either. I have a 2wd, 27 spline output and a an aluminum 4wd with the factory 208 adapter and 32 spline output shaft. If you find one be sure to get the shifter, they are Hurst Competition Plus but the mounting and linkage is unique, uses Muncie size bushings vs larger Mopar parts. The Mopar car shifter mounting bracket will not clear the 4wd adapter. Van applications have a relocated shifter - different tali housing to move the shifter up and forward. The bell housings are kind of unique, the bearing retainer is bigger than a Muncie so they don't fit early bells. The trans may have Moper, Chevy, or both mounting patters, and the bells that work appear to have that same combination. My hydro clutch bell is drilled for both patterns and the unused holes have plastic plugs from the factory. My mech clutch bell is also double patterned, I think all the 86-87's are, and some of the 82's are Chrysler pattern. Oh, ath aluminum cases are known to wear the countershaft bore, requiring the case to be bushed.

GM used them behind nothing more powerful than a 305 or 6.2 diesel. The gear swap to get overdrive changes the loads inside the trans. Steep first gear creates a lot of torque on the output in low, and the overdrive make for high shaft speeds and high input loads in top gear. Dodge used them behind 318's which were, at that point, about gutless too.

Now, if only my knees wern't bad - these are on my spring garage sale list lol.