4+3 Transmission
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
If they are taken care of and you change the fluid & filter in the overdrive unit at the correct intervals they are good. Not taken care of they can be a nightmare.
I just pulled my 4+3 yesterday to put a spare overdrive unit onto it as I lost fluid in the one in there and burned up the clutch packs. Rebuild time for that baby. :)
I just pulled my 4+3 yesterday to put a spare overdrive unit onto it as I lost fluid in the one in there and burned up the clutch packs. Rebuild time for that baby. :)
Team Owner
Joined: Apr 2002
Posts: 28,747
Likes: 41
From: Frankenstein never scared me. Marsupials do, because they're fassst…and they DART, THAT'S crazy!
St. Jude Donor '03 thru '26
Re: 4+3 Transmission (alphado)
You REALLY have to take care of them like Scorp said or you will be in for a world of hurt. Change fluid and filter on regular basis. Never drive around town in overdrive and only kick into overdrive when driving over 50 MPH for extended periods of time. I got that straight from the company that builds the overdrive units. They also said not to follow the directions GM has in the owners manual because it was written to show how to conserve gas but it will kill the overdrive unit dead. If the overdrive unit ever goes bad, it cost a fortune to replace. My brother and I replaced the overdrive unit in his ’87 vert. The job wasn’t difficult (for us) but the price for the unit was outrageous. I baby my Doug Nash 4+3 and have had no probs with it yet (knocks on wood). Honestly though, if it wasn’t for the fact that I planed to buy a Z51 4+3 35th Anniversary Edition for collectable reasons, I would not own a 4+3. The 6 speeds that GM introduced in ’89 are much better (with CAGS bypass of course). It’s the overdrive unit in the 4+3’s that are the problem.
Take care of it and good luck. :seeya
Take care of it and good luck. :seeya
Drifting
Joined: Aug 2001
Posts: 1,550
Likes: 27
From: Minneapolis MN
Re: 4+3 Transmission (The^Nomad)
Never drive around town in overdrive and only kick into overdrive when driving over 50 MPH for extended periods of time. I got that straight from the company that builds the overdrive units. They also said not to follow the directions GM has in the owners manual because it was written to show how to conserve gas but it will kill the overdrive unit dead.
Burning Brakes
Joined: Sep 2001
Posts: 1,011
Likes: 0
From: Jupiter Florida
Re: (scorp508)
Not taken care of they can be a nightmare.
Team Owner
Joined: Apr 2002
Posts: 28,747
Likes: 41
From: Frankenstein never scared me. Marsupials do, because they're fassst…and they DART, THAT'S crazy!
St. Jude Donor '03 thru '26
Re: (scorp508)
For what it is worth. I bought an ENTIRE 4+3 tranny off of ebay for $400. I had blown up 1st gear in my 1st speed and needed a replacement. :)
WOW great deal man!!! :yesnod: :cool: :cheers:
