Your not in Utah by chance are you?
Manual changeover to auto help
Thread Starter
Intermediate
Joined: Aug 2012
Posts: 25
Likes: 0
Manual changeover to auto help
I want to change my 1990 c4 zf 6 speed to an auto. What trans should i use 700r ? 4l60e with vett tail housing ? Does the 4l need a computer to shift ? And will my manual tork brace fit the auto trans ? As for shifter i a b&m i will use
i know, why give up a zf6 that i bought new not rebuilt 2 yrs ago for an auto? Well my left leg dont work anymore and i love my c4
I WILL ADD PHOTOS OF MY BABY THIS WEEKEND
i know, why give up a zf6 that i bought new not rebuilt 2 yrs ago for an auto? Well my left leg dont work anymore and i love my c4
I WILL ADD PHOTOS OF MY BABY THIS WEEKEND
Last edited by parriedog49; Sep 5, 2012 at 07:29 PM.
Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
My 84 had a 4+3 and I switched to a 700r4 and finally a 4l60e for drag racing. For me, the 4l60e was really easy to dial in part and full throttle shift points with a laptop. It does require an aftermarket computer controller. I used a TCI. You will either need to redrill your C-beam or get one for an automatic. They aren't that expensive. Good luck.
Pro
Joined: Apr 2004
Posts: 621
Likes: 37
From: Texas
I put an automatic in place of my 4+3 and the holes lined up perfectly granted it was not a ZF6 like he has.
I have never done it but I thought a ZF6 would drop in place of a 4+3.
Last edited by project C4; Sep 5, 2012 at 10:02 PM.
Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
You sure about that ? I thought the holes only got out of line if the third member changed d36 to d44 or vice versa.
I put an automatic in place of my 4+3 and the holes lined up perfectly granted it was not a ZF6 like he has.
I have never done it but I though a ZF6 would drop in place of a 4+3.
I put an automatic in place of my 4+3 and the holes lined up perfectly granted it was not a ZF6 like he has.
I have never done it but I though a ZF6 would drop in place of a 4+3.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Depends what you need?
A T700 / 4L60 doesn't need the electronic controller and was what came stock in your model
Some wiring mods for the convertor (TCC ) lockup and you are in business reusing your existing driveshaft and C Beam.
Will need to swap the ZF6 yoke on your driveshaft for a reg ( PG / TH350 / T700 ) 27 spline GM yoke
A T700 / 4L60 doesn't need the electronic controller and was what came stock in your model
Some wiring mods for the convertor (TCC ) lockup and you are in business reusing your existing driveshaft and C Beam.
Will need to swap the ZF6 yoke on your driveshaft for a reg ( PG / TH350 / T700 ) 27 spline GM yoke
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