3 rib trannys

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chitwnvw
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3 rib trannys

Post by chitwnvw » Tue Feb 14, 2012 6:28 am

Are there any 'gotchas' that I should now before I buy a used 3 rib transmission for my '73 bus? Besides, of course, not know the condition of the trans. Are there any compatibility issues between the different years? etc.

Thanks.

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Amskeptic
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Re: 3 rib trannys

Post by Amskeptic » Tue Feb 14, 2012 9:05 am

chitwnvw wrote:Are there any 'gotchas' that I should now before I buy a used 3 rib transmission for my '73 bus? Besides, of course, not know the condition of the trans. Are there any compatibility issues between the different years? etc.

Thanks.
It is an 002 which bridges 1968-1974 model years. It needs the bell housing with the supports introduced in 1972 for the Type 4 engine. Other than that, you should be good to go.
Colin
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles

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chitwnvw
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Re: 3 rib trannys

Post by chitwnvw » Tue Feb 14, 2012 9:21 am

If needed, I can swap the bellhousing off of my existing/nonfunctioning transmission that is currently on the '73, no?

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chitwnvw
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Re: 3 rib trannys

Post by chitwnvw » Tue Feb 14, 2012 9:36 am

chitwnvw wrote:If needed, I can swap the bellhousing off of my existing/nonfunctioning transmission that is currently on the '73, no?
If youtube is to believed, it should be no problem...bet I get some interesting pictures of the guts of the old trans too!

http://www.youtube.com/watch?v=ipVfwRBK ... re=related

Is the input shaft longer on the T4 variants as well? That looks like something that can be swapped as well...

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chitwnvw
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Re: 3 rib trannys

Post by chitwnvw » Tue Feb 14, 2012 12:16 pm

Is this a 002? It looks like it has 4 ribs!

http://chicago.craigslist.org/nch/pts/2850102100.html

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tristessa
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Re: 3 rib trannys

Post by tristessa » Tue Feb 14, 2012 2:30 pm

5 rib, just like the one in my '75.
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Amskeptic
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Re: 3 rib trannys

Post by Amskeptic » Wed Feb 15, 2012 10:17 am

tristessa wrote:5 rib, just like the one in my '75.
That looks like a 6 rib in chitwn's ad example.

This is a 5 rib:
Image
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles

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tristessa
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Re: 3 rib trannys

Post by tristessa » Wed Feb 15, 2012 2:25 pm

<shrug> I counted five ribs on the one Chitwn linked to...
Remember, only YOU can prevent narcissism!

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Re: 3 rib trannys

Post by Amskeptic » Wed Feb 15, 2012 5:24 pm

tristessa wrote:<shrug> I counted five ribs on the one Chitwn linked to...

The 5 ribs have that sharp edge that also gave rise to the name "pyramid" transaxle.
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles

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