Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

Q on t-56 to 700 swap

Thread Tools
 
Search this Thread
 
Old Aug 15, 2009 | 03:01 PM
  #1  
tazz2u's Avatar
Thread Starter
Teching In
 
Joined: Jun 2005
Posts: 4
Likes: 0
Default Q on t-56 to 700 swap

I have a 94 Z28 and i am goint to take the T-56 out and put a 700r4 in. the trany has a full manual valve body and i have a ratchet shifter. it is a built street car.

What do i need to make the 700 work in my car without swaping the whole harness out to an automatic. i still drive it on the highway so i would want the stall to lockup. i wont mind if i have to shift it manualy still on the street.

Thank you
Reply
Old Aug 25, 2009 | 02:52 PM
  #2  
justindavis's Avatar
Teching In
 
Joined: Sep 2006
Posts: 20
Likes: 0
From: florida and michigan
Default

ANY info on this? its for myself
Reply
Old Aug 26, 2009 | 06:58 PM
  #3  
tsx153's Avatar
On The Tree
 
Joined: Oct 2005
Posts: 128
Likes: 0
Default

If your going to a 700 you will want the manual harness anyways....
Reply
Old Aug 27, 2009 | 03:22 PM
  #4  
justindavis's Avatar
Teching In
 
Joined: Sep 2006
Posts: 20
Likes: 0
From: florida and michigan
Default

Why is that?

I have the tranny. disregaurd the first post. what will i need to make this work?
Thank you for the info
Reply
Old Aug 27, 2009 | 06:19 PM
  #5  
justindavis's Avatar
Teching In
 
Joined: Sep 2006
Posts: 20
Likes: 0
From: florida and michigan
Default

Any ideas?
Reply
Old Sep 2, 2009 | 12:28 AM
  #6  
justindavis's Avatar
Teching In
 
Joined: Sep 2006
Posts: 20
Likes: 0
From: florida and michigan
Default

Someone has to have a clue
Reply
Old Sep 2, 2009 | 06:27 PM
  #7  
justindavis's Avatar
Teching In
 
Joined: Sep 2006
Posts: 20
Likes: 0
From: florida and michigan
Default

??????????
Reply
Old Sep 2, 2009 | 08:52 PM
  #8  
GMRACER13's Avatar
TECH Apprentice
15 Year Member
Photogenic
iTrader: (1)
 
Joined: Jul 2006
Posts: 311
Likes: 0
From: Tampa, FL
Default

You will need a flexplate and an auto crossmember. You will need a stock auto shifter (or aftermarket) and the shifter plate/console from an auto car. If you use a stock F-body shifter be aware that there are extra sheet-metal brackets and such that the auto shifter bolts to that a 6-speed car doesn't have. If you choose an aftermarket shifter you will need to fab up your own mounting and either modify a stock shifter plate/console or come up with some other way to make it look decent in your center console. You will need a throttle cable bracket from a '93 F-body in order to hook up the T.V. cable. You will also need a radiator from an automatic F-body (or aftermarket auxiliary cooler) and transmission cooler lines. If the 700R4 is an early model unit you will need to change out the plastic speedometer drive gear with a metal reluctor wheel from a later unit as well as find a speed sensor for it. You will need to have the PCM tuned to adjust for the different number of teeth on the auto trans. reluctor vs. the manual trans. reluctor if you want your speedometer to read correctly.

There are a couple ways to get the reverse lights to work:

-Use an aftermarket shifter which has a provision for reverse lights (usually a switch mounted on the shifter) and route the wires from the reverse light switch (passenger side of T-56 trans.) to it.

-Use a stock auto shifter and get a wiring diagram and figure out which wires you need to hook up.

-Buy a toggle switch and run the wires to it (yes, same wires as above) and turn the lights on manually when you put the car in reverse (ghetto).

Lock-up:

All you "should" need to make lock-up work is a wiring diagram for the four pin case connector on the driver's side of the transmission. Simply supply 12v to the correct pin and the converter "should" lock-up when the transmission shifts to 4th gear. The problem with this is that lock-up will be stacked almost immediately on top of 4th and may lug the engine a little at lower RPM and it won't unlock if you gently "crowd" the throttle. The trans will have to downshift to third for the converter to unlock. These are things that the factory computer would control. You could also just put lock-up on a toggle switch and turn it on manually when you are cruising on the hwy. but then you would have to remember to turn it off and on.


The only thing you can re-use is your 6-speed driveshaft.

Last edited by GMRACER13; Sep 2, 2009 at 09:24 PM.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo




All times are GMT -5. The time now is 12:50 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE