'165 $32B vs $6E

[Shannen Durphey]

The 4+3 is a GM designed, Doug Nash manufactured transmission.  It is a Borg
Warner Super T-10 4 speed manual transmission with an oil pump and planetary
gearset on the output shaft which provides direct drive and overdrive
operation.  There is a button on the shift lever or console used to provide
input to the ecm for overdrive engagement.  Different year 'vettes operate
differently, and there's enough variation that there's no real general set of
rules.  The transmission is not very durable.  Any leaks between the manual
transmission and the auto trans OD unit usually result in failure of the od. 
The screen filter in the od unit should be cleaned and the fluid changed every
10k mi.  The transmission is a beter novelty than anything else.  It should not
be considered for any performance apps.

Here is some more info:
http://www.gearzone.net/dne.htm
Shannen

Bob Wooten wrote:
> 
> -----Original Message-----
> From: owner-gmecm at diy-efi.org [mailto:owner-gmecm at diy-efi.org]On Behalf
> Of Marteney, Steven J.
> Sent: Friday, July 27, 2001 12:51 PM
> To: gmecm at diy-efi.org
> Subject: RE: '165 $32B vs $6E
> 
> Sorry for the ignorance, but what is a Vette 4+3 tranny?  Is it actually one
> of those add-on units that adds an additional gear reduction in any gear?
> ~Yes.
> 
> So is it an automatic overdrive (4)
> ~No stick.
> 
> plus the add on that works in the lower
> 3 gears?
> ~ I think that you can use it w/any gear, but I thought that it was
> recommened for 2-4.
> 
> The factory actually did this?
> ~ Yes with mixed results.  some people thought they worked great, but I have
> a buddy that did nothing @ the local Chevy dealer but work on them & he
> hated them.
> 
> BW
> 
> Steve
> 
> -----Original Message-----
> From: romans at starstream.net [mailto:romans at starstream.net]
> Sent: Thursday, July 26, 2001 10:38 PM
> To: gmecm at diy-efi.org
> Subject: Re: '165 $32B vs $6E
> 
> Hi Mitch, you must have an 87 vet with a 4+3 trans.  ABTB was my original
> code too.
> There is not a hack for 87-88 code.  It is similar to 86 code and there is a
> hac for that.
> I switched to 6E code but it does not support the 4+3, the skip shift
> activates the OD!
> I finally just switched in a 6 speed and really like it!
> Except that now I am thinking 730, speed density might be the way to go!
> Mark
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