Notice that the aluminum 6rib has wider ribs and is much stronger.

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A good friend will bail you out of jail. A best friend will be sitting next to you saying: "Damn that was fun!"



http://www.youtube.com/watch?v=A5wGMaUMXUQ

I always thought the thinner ribbed 6-ribs are the early ones and the thicker ones are the newer ones, mine was a side shifter and it was converted to the nose cone style......the mid shifter is the ones that has the thicker ribs also but the shifter sticks out of the case right?

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"Loud pipes saves lives"

When Eric DeBord built my tranny he upgraded my case to one of those.

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If your clutch ain't slippin,, you probably got it adjusted right!!!!!

so that means this is a better?tranny or just the case is stronger? soon as i saw this i ran down to the basement to look at the one i just picked up and damn sure its the aluminun one with the bigger ribs going wider toward the center score so i got this fresh out of a bus, i think it was a 76' does anyone know what the gearing might be for this? and does the different case change the gearing? i swear i learn something new everyday on here

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ANTI- antifreeze!!!!!!

486 why aint that bitch in your bug yet?

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Hey,can you hand me those zip ties and that roll of duct tape?!

456 I think

Check code on bottom edge of main case, probably starts with letters DK.
It was a side nose shift that was converted to end nose shift.

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A good friend will bail you out of jail. A best friend will be sitting next to you saying: "Damn that was fun!"



http://www.youtube.com/watch?v=A5wGMaUMXUQ

Gearing on the the trans will depend on how early to late the trans is.....the 1st (3.80) 2nd (2.06) 3rd gear (1.26) is the same throughout, but this......

Gear Ratios by VIN:

All 68-79 bus transmissions have the same 1st, 2nd and 3rd gear ratios.

These are the variations in gear ratios for US models:
VIN Reverse gear ratio 4th gear ratio R&P ratio R&P * 4th
218 000000 - 211 2 276560 3.61 0.821 5.375 4.413
211 2 276561 - 213 2 068547 3.80 0.821 5.375 4.413
213 2 068548 - 213 2 300001 3.79 0.889 5.375 4.778
214 2 000001 - 215 2 300001 3.79 0.889 4.857 4.318
216 2 000001 - 219 2 300001 3.79 0.889 4.571 4.064

There is some debate whether or not all 73 models had the 0.821 4th gear or whether the cutoff VIN is higher. The table above is what the factory published in the US. See the references section for more info.

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"Loud pipes saves lives"

i got three of em so i'll look for the code tomorrow on the tranny to see what it is... so what about the strength issue? a curious mind wants to know

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ANTI- antifreeze!!!!!!

good post chad i been looking for that type of info, you got any idea what the actual 5.4x? code is for a 091, i herd it called 5.42 and also heard it called 5.43

also does nybody have this info on the side and mid shift trannys

and ive got a question about 3 ribs, ive been told some are better than others and have a stronger first gear but dont remember if its wider or a different ratio or ?

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Just Stand On It!!!!

Chris

and back to maddogs post about the cases,

i also thought the newer/midshift had the beffier "main" case and that the older/nose shift/side shift "main" cases were the same

i undertand the part about the side shift can be converted to nose shift but that the mid shift can not be converted and i know how to tell the 3 trannys apart, but aparently im a little lost on understanding which ones it is that has the thicker ribs

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Just Stand On It!!!!

Chris

also i wonder how much difference it is in the weight between the bare empty "thick rib" and "thin rib" main cases

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Just Stand On It!!!!

Chris

The side shift and the mid shift has the same thickness on the ribs, just one you can covert to nose cone the other you can't.....any time you see a thicker ribbed 091, I will say that it has been coverted from a side shift tranny....the earlier 091 are the original nosecone trannys and has the thinner ribs....

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"Loud pipes saves lives"

I am not sure of the code, because I believe the 5.42 would only be found in is the diesel VW buses and they are the mid-shift types too, I think..... If you have a set of 5.42 gears in your hand, count the teeth of both ring and pinion and divide ring with the pinion and that will give you your ratio (for example.....ring---38 teeth, pinion---8 teeth, 38/8---4.75 ratio, this is just an example.... ) You should be able to fine the true ratio of the 5.42 or 5.43, I would say folks say it both ways is because the true ratio is close to in between them....

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"Loud pipes saves lives"

Codes with 5.43 and shifter in the side of nosecone:DM,DS,DX, and 9D.
Codes with 5.43 and shifter in the side of main case:AVH,AVJ,AVK,ABS, and ABH.
They also came in some of the syncros [4wd], but a person would be a fool to saw the pinion shaft off on one of those, due to their value.
5.43= 7 tooth pinion and 38 tooth ring gear.

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A good friend will bail you out of jail. A best friend will be sitting next to you saying: "Damn that was fun!"



http://www.youtube.com/watch?v=A5wGMaUMXUQ

Well there is a third type 6rib case,if you look at the small rib just above your[starter laying in floor] starter wire in the picture.
That rib is wider on one side than the other side, compare it to my original pic.

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A good friend will bail you out of jail. A best friend will be sitting next to you saying: "Damn that was fun!"



http://www.youtube.com/watch?v=A5wGMaUMXUQ

how do you convert a side shift to a to nose cone shift and i have a 091 six rib nose shift and a side shift which of the 2 would be better to build

They have the same gears inside.
To convert the side shift to an end shift, you need the nosecone, gear carrier [part of the case that nosecone is bolted to] with the shift rods ect. still attached from an end shift 6rib.
The only advantage to doing that is a stronger case.
To be truthful, I really don't see that a 6rib case is any stronger than a 5rib or 3rib.
Aluminum ones might be a little bit stronger.
Where the case usually breaks is between the bellhousing and the cv bell, and all the cases are practically the same in that area.
Lately I've been fabricating a 1/8th steel plate to sandwich between the bellhousing and the main case to help prevent that.
Also I would not sacrifice a good end shift 6rib to just convert a side shift.
You can also use a 73 up [big shaft] 3rib or 5rib gear carrier section instead of the 6rib, but you have to add a [guessing, rancho has them] 1/4, 5/16 plate as a spacer to make up for the gear carrier thickness.
6rib cases are longer why= because the gear carrier section is thicker than the 3 or 5ribs.
All the main cases of the 6,5, or 3ribs are the same length.
Big shaft=intermediate shaft is larger diameter, you can easily spot the small shaft 3ribs as they have a bump [where there is a bolt holding the reverse idler shaft bearing in] along the side rib on starter side, between cv and bellhousing.

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A good friend will bail you out of jail. A best friend will be sitting next to you saying: "Damn that was fun!"



http://www.youtube.com/watch?v=A5wGMaUMXUQ

my friend you are correct about that, i went and looked at it, by the way the white dot on top of it is definately bird shit

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ANTI- antifreeze!!!!!!

Do you have a pic of this?? Curiosity killed the cat!!! lol!!

I just picked one of these up over the weekend, it’s going to be my spare. But I'm wondering if I should get the case reinforced for reassurance??

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Dont' be be scared. When it dought floor it!

I tried to post then here on woodsbuggy, but it is so irritating to have my 800X600 pixel pics get chopped off.
So I have posted them here. http://www.rail-buggy.com/forumdisplay. ... nsmissions
Plus pics of all 3 types of 6rib cases, lined up side by side.

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A good friend will bail you out of jail. A best friend will be sitting next to you saying: "Damn that was fun!"



http://www.youtube.com/watch?v=A5wGMaUMXUQ

Maddog, thanks for the pics!!!

You only want to use the 1/8th inch plate with the early 091’s with the thin ribs correct??? Also this doesn’t affect the clutch in any way having the bell housing out a 1/8th of an inch does it? If I use both plates (the 1/8th plate and bearing thrust plate) along with the steel ball, chromoly pinion nut, and a super diff. This trans will be just as good as any other built 091?? ?? Or should I get a newer case???

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Dont' be be scared. When it dought floor it!

Use the bellhousing plate on all of them,all the cases are weak in the same area that the 1/8 in. plate reinforces. I use a stationary belt sander to even out the nosecone, [redneck milling machine], the mainshaft bearing usually has already beat an indentation into the nosecone, that I smooth out 1st, the thrust plate prevents that from happening again.

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A good friend will bail you out of jail. A best friend will be sitting next to you saying: "Damn that was fun!"



http://www.youtube.com/watch?v=A5wGMaUMXUQ

some of the 6 ribs also had stock super diff.... i found the vin number for them once but never again.... anyone else seen this?

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if it aint broke don't fix it
gun control is hiting your target