I was amazed to find out what transmission was in my car

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Nov 16, 2005 | 08:45 PM

GOTMYZ

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From: VA

Car: 1986 Z28

Engine: 305ci

Transmission: 700R4

I was amazed to find out what transmission was in my car

I was researching drive and driven gears for my car. In the process I found out that my 1992 has a 4L60 tranny and not the TH700R4 like I thought.

Is this odd?

Also, in the GM system, it looks like these are the same except for the numbers.

OR

The 700R4 does not use a VSS like the 4L60 does.

This should be a good conversation!!!

Nov 16, 2005 | 08:48 PM

84z28350

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From: Yellowknife, NWT, Canada

Car: 84 Z28

Engine: 357

Transmission: TH-350C

Axle/Gears: 3.43

Its not the first time one has been swapped into a 3rd gen...

Nov 16, 2005 | 09:43 PM

mystikkal_69

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From: San Antonio, TX

Car: 1988 IROC-Z

Engine: L98 (350 TPI)

Transmission: MD8 (700 R4) + 3.42 LS1 Rear

4L60 ---> 700R4

700R4 ---> 4L60

4L60E ---> 4L60E

Nov 16, 2005 | 10:28 PM

Apeiron

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From: Mercedes Norte, Heredia, Costa Rica

Car: 1984 Z28 Hardtop

Engine: 383 Carb

Transmission: 4L60

Axle/Gears: 3.54 Dana 44

A 4L60 is a 700R4.

Nov 16, 2005 | 10:39 PM

GOTMYZ

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From: VA

Car: 1986 Z28

Engine: 305ci

Transmission: 700R4

Quote:

Originally posted by 84z28350
Its not the first time one has been swapped into a 3rd gen...

This was the original one. Never replaced.

Nov 16, 2005 | 10:41 PM

GOTMYZ

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From: VA

Car: 1986 Z28

Engine: 305ci

Transmission: 700R4

Quote:

Originally posted by Apeiron
A 4L60 is a 700R4.

ok..
So why the different names. Do we know if GM changed anything?

Nov 16, 2005 | 10:46 PM

Apeiron

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From: Mercedes Norte, Heredia, Costa Rica

Car: 1984 Z28 Hardtop

Engine: 383 Carb

Transmission: 4L60

Axle/Gears: 3.54 Dana 44

The new naming scheme is more consistent and systematic. The first digit indicates the number of forward gears, the second letter describes the orientation (longitudinal or transverse), the final digits indicate the nominal strength, and an E is appended to indicate electronic instead hydraulic control.

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Nov 16, 2005 | 11:50 PM

n8sz28

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Joined: May 2005

Posts: 311

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From: Michigan U.S.A

Car: 85 camaro z28

Engine: 305 TPI

Transmission: T56 6 speed

Axle/Gears: 3.27 borg warner 9 bolt

i believe they're the same trans just ones electrical and ones not

Nov 16, 2005 | 11:55 PM

Apeiron

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From: Mercedes Norte, Heredia, Costa Rica

Car: 1984 Z28 Hardtop

Engine: 383 Carb

Transmission: 4L60

Axle/Gears: 3.54 Dana 44

No, the 4L60 is not electronic. The 4L60E is.

Nov 17, 2005 | 12:39 AM

#10

GOTMYZ

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From: VA

Car: 1986 Z28

Engine: 305ci

Transmission: 700R4

Quote:

Originally posted by Apeiron
No, the 4L60 is not electronic. The 4L60E is.

what about between the 700R4 and the 4L60

Nov 17, 2005 | 01:52 AM

#11

ringo234

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Joined: Feb 2004

Posts: 1,581

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From: So Cal

Car: 89 IROC Z28

Engine: 357 TPI

Transmission: 700R4

Axle/Gears: 3.42 Posi

The name is the only difference.

Nov 17, 2005 | 07:47 AM

#12

sofakingdom

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Posts: 27,918

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Car: Yes

Engine: Usually

Transmission: Sometimes

Axle/Gears: Behind me somewhere

Quote:

Do we know if GM changed anything?

Yes, we know that.

They changed the name. Nothing else. The actual parts are all the same.

Nov 17, 2005 | 10:15 AM

#13

Dyno Don

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From: Orange, CA

Car: '90 Trans Am-12.45@110.71

Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ

Transmission: Tremec T-56

Axle/Gears: 12 Bolt 3.73

Quote:

Originally posted by sofakingdom
Yes, we know that.

They changed the name. Nothing else. The actual parts are all the same.

Not true...they added the Aux. valve body.

Nov 17, 2005 | 11:27 AM

#14

GOTMYZ

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From: VA

Car: 1986 Z28

Engine: 305ci

Transmission: 700R4

Quote:

Originally posted by sofakingdom
Yes, we know that.

They changed the name. Nothing else. The actual parts are all the same.

That is funny.. Name change..
GM is nuts!!

Nov 17, 2005 | 11:28 AM

#15

Apeiron

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From: Mercedes Norte, Heredia, Costa Rica

Car: 1984 Z28 Hardtop

Engine: 383 Carb

Transmission: 4L60

Axle/Gears: 3.54 Dana 44

The auxiliary valve body came in before the name change.

Nov 17, 2005 | 08:23 PM

#16

zippy

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From: Chander, Arizona USA

Car: 2006 Silverado 1500

Engine: 5.3L

Transmission: 4L60E

these guys are correct. the 700R4 recieved a name change in 1988 to the 4L60. this was simply done because this is how GM was to name their transmissions in the future.

Example: 4L60

4=4 forward gears
L=longitudinal (rwd)
60=torque rating system GM made for themselves

Another example: 4T60E
4=4 forward gears
T=transaxle (fwd)
60=torque rating
E=electronicly shifted

Nov 17, 2005 | 08:37 PM

#17

GOTMYZ

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From: VA

Car: 1986 Z28

Engine: 305ci

Transmission: 700R4

Quote:

Originally posted by zippy
these guys are correct. the 700R4 recieved a name change in 1988 to the 4L60. this was simply done because this is how GM was to name their transmissions in the future.

Example: 4L60

4=4 forward gears
L=longitudinal (rwd)
60=torque rating system GM made for themselves

Another example: 4T60E
4=4 forward gears
T=transaxle (fwd)
60=torque rating
E=electronicly shifted

I have learned a bunch from this

Nov 17, 2005 | 08:49 PM

#18

mystikkal_69

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From: San Antonio, TX

Car: 1988 IROC-Z

Engine: L98 (350 TPI)

Transmission: MD8 (700 R4) + 3.42 LS1 Rear

Quote:

Originally posted by zippy
Example: 4L60

4=4 forward gears
L=longitudinal (rwd)
60=torque rating system GM made for themselves

haha the stock 700 can only handle 60 ft/lbs LOL j/k

Nov 17, 2005 | 08:49 PM

#19

mystikkal_69

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From: San Antonio, TX

Car: 1988 IROC-Z

Engine: L98 (350 TPI)

Transmission: MD8 (700 R4) + 3.42 LS1 Rear

Quote:

Originally posted by zippy
Example: 4L60

4=4 forward gears
L=longitudinal (rwd)
60=torque rating system GM made for themselves

haha the stock 700 can only handle 60 ft/lbs LOL j/k

Nov 17, 2005 | 11:13 PM

#20

n8sz28

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Joined: May 2005

Posts: 311

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From: Michigan U.S.A

Car: 85 camaro z28

Engine: 305 TPI

Transmission: T56 6 speed

Axle/Gears: 3.27 borg warner 9 bolt

i learned a bunch also from this. but does anyone know what the 700r4 actually stands for just out of curiousity.

Nov 18, 2005 | 12:16 PM

#21

AJ_92RS

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Joined: Apr 2001

Posts: 4,969

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From: USA

Car: yy wife, crazy.

Engine: 350, Vortecs, 650DP

Transmission: TH-350

Axle/Gears: 8.5", 3.42

Quote:

Close....

4-speeds, Longitudinally positioned, 6000 lbs. GVW Electronically Controlled

Nov 18, 2005 | 05:40 PM

#22

GOTMYZ

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Member

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From: VA

Car: 1986 Z28

Engine: 305ci

Transmission: 700R4

Learning is a great thing!!!

Nov 19, 2005 | 01:07 AM

#23

Randy82WS7

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Joined: Mar 2002

Posts: 4,812

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From: 62656

Car: 1991 S10 pickup 2700lbs

Engine: 4.3L Z TBI

Transmission: 700R4

Axle/Gears: 3.08 7.625"

never knew the 60 was 6000 gross vehicle weight

thats cool to learn

thats the only thing i had no idea on

otherwise all this is old info

good job

Nov 20, 2005 | 03:11 AM

#24

zippy

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Joined: Apr 2000

Posts: 1,338

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From: Chander, Arizona USA

Car: 2006 Silverado 1500

Engine: 5.3L

Transmission: 4L60E

Quote:

Originally posted by AJ_92RS
Close....

4-speeds, Longitudinally positioned, 6000 lbs. GVW Electronically Controlled

i don't know what you mean by close? the 60E has been in many trucks well past 6000gvw. i listed it right. if you're going on my second listing, i listed a 4T60E which is the front wheel drive version. that 60E also doesn't go into a 6000gvw ride. i listed everything correct.