LT1-LT4 Modifications 1993-97 Gen II Small Block V8

110 mph speedo in Z28

Thread Tools
 
Search this Thread
 
Old 09-11-2006, 05:11 PM
  #21  
Staging Lane
 
flyinglow57's Avatar
 
Join Date: Apr 2006
Posts: 53
Likes: 0
Received 0 Likes on 0 Posts

Default

actually it is 108 mph.. my 6spd formula had it. miss that car
Old 09-11-2006, 08:24 PM
  #22  
TECH Apprentice
iTrader: (6)
 
OnA Fan's Avatar
 
Join Date: Feb 2006
Location: Tampa Bay Area
Posts: 322
Received 10 Likes on 9 Posts

Default

Originally Posted by Honda Hunter
It's a 4l60E like the 94-97's but it doesnt have the other options. I bought a 97 T/A center console and replaced mine completly so I could take advantage of my Transgo. Granny gears are I believe 2.73's though I may be wrong.
It's just minor things that you wouldve changed anyways if you think about it except for the cluster. I stand corrected 94-96. Could be 93-96 but 93's are wierdos and it's hard to tell what they share and dont share with the newer models.
93s have 4L60 trans without the electronic control module (could be different on your vette). BTW, my Formula has the P-R-N-D-3-2-1 and 150 mph speedo.
Old 09-11-2006, 08:43 PM
  #23  
12 Second Club
iTrader: (35)
 
Schweet97Z's Avatar
 
Join Date: Jan 2006
Location: Danville PA
Posts: 1,550
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by OnA Fan
93s have 4L60 trans without the electronic control module (could be different on your vette). BTW, my Formula has the P-R-N-D-3-2-1 and 150 mph speedo.

and your car has 3:42 gears right?
Old 09-11-2006, 08:56 PM
  #24  
Launching!
 
My94TransAm's Avatar
 
Join Date: Sep 2006
Location: Snellville
Posts: 201
Likes: 0
Received 0 Likes on 0 Posts
Default

LT1 Forth Gens that have a 1 gear on the shofter have 3:23s, and one without have 2:73s. Look on the driver's side door and look at what tires are specified for it. I am not a brain with these cars but this is something I am almost sure of.
Old 09-11-2006, 09:42 PM
  #25  
TECH Junkie
iTrader: (22)
 
camar0corey's Avatar
 
Join Date: May 2006
Location: Spring Hill, FL
Posts: 3,974
Likes: 0
Received 2 Likes on 2 Posts

Default

damn this is the first time I've heard of this, at least I know so I won't think I'm loosing my mind if I ever see a z28 with a 110 speedometer. I thought that cars without the z rated tires just had a speed limiter. What was GM thinking making that car without z rated tires as standard equipment anyway? That was one of the selling points of the car was it not, 155 off of the lot?
Old 09-11-2006, 09:45 PM
  #26  
TECH Junkie
iTrader: (22)
 
camar0corey's Avatar
 
Join Date: May 2006
Location: Spring Hill, FL
Posts: 3,974
Likes: 0
Received 2 Likes on 2 Posts

Default

didn't all a4's have 3.23s?
Old 09-11-2006, 10:39 PM
  #27  
12 Second Club
iTrader: (35)
 
Schweet97Z's Avatar
 
Join Date: Jan 2006
Location: Danville PA
Posts: 1,550
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by camar0corey
didn't all a4's have 3.23s?

no, a 3:23 rear end was an option.
Old 09-11-2006, 11:19 PM
  #28  
Teching In
 
Special_Z28's Avatar
 
Join Date: Jan 2005
Location: NE, MS
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts

Default

All auto cars came with the following gear options (the RPO codes are in the glove box or on the door jam)

GU2 = 2.73
GU5 = 3.23
GU6 = 3.42
Old 09-11-2006, 11:25 PM
  #29  
TECH Addict
iTrader: (8)
 
Honda Hunter's Avatar
 
Join Date: Sep 2005
Location: The beautiful Kingdom of Bahrain
Posts: 2,401
Likes: 0
Received 0 Likes on 0 Posts

Default

I'm aware of all of that and more. What I didnt know was are the clusters interchangable. On the Vette the clusters are interchangable from 92-96 but 92-93 had yello gauges compared to the white of 94+.
Old 09-12-2006, 08:05 AM
  #30  
12 Second Club
iTrader: (35)
 
Schweet97Z's Avatar
 
Join Date: Jan 2006
Location: Danville PA
Posts: 1,550
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by Special_Z28
All auto cars came with the following gear options (the RPO codes are in the glove box or on the door jam)

GU2 = 2.73
GU5 = 3.23
GU6 = 3.42
i thought 3:42 gears were only avail. for 6 speed car? didnt know you could get them for auto also.....
Old 09-12-2006, 08:56 AM
  #31  
Staging Lane
 
anaik's Avatar
 
Join Date: Jul 2006
Location: Cleveland, OH
Posts: 61
Likes: 0
Received 0 Likes on 0 Posts
Default

GU6 could not be had with the A4.
Old 09-12-2006, 11:39 AM
  #32  
11 Second Club
iTrader: (88)
 
the_merv's Avatar
 
Join Date: Mar 2006
Location: The Beach...
Posts: 19,653
Received 251 Likes on 192 Posts

Default

In the Cars with the GU5 (3.23), and GU6 (3.42, M6 only), you will also see a code G80. This was for the Posi Limited-slip rear, also known as the "Performance Axle". The A4 cars will say 1,2,3,OD,N,R,P on the Center Console. Lots of the convertible Z28's came with 2.73's, most of them look like normal cars. Lots of the V6's had the 2.73's also. The 3.23's were an extra option, and came with the Posi, the 2.73's didn't have it. The 110mph Speedometer was in some of the earlier Z28's regardless of the gears, I have seen a factory 1995 2.73 car with a 150 speedometer in it.
Old 09-12-2006, 01:02 PM
  #33  
12 Second Club
iTrader: (35)
 
Schweet97Z's Avatar
 
Join Date: Jan 2006
Location: Danville PA
Posts: 1,550
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by the_merv
In the Cars with the GU5 (3.23), and GU6 (3.42, M6 only), you will also see a code G80. This was for the Posi Limited-slip rear, also known as the "Performance Axle". The A4 cars will say 1,2,3,OD,N,R,P on the Center Console. Lots of the convertible Z28's came with 2.73's, most of them look like normal cars. Lots of the V6's had the 2.73's also. The 3.23's were an extra option, and came with the Posi, the 2.73's didn't have it. The 110mph Speedometer was in some of the earlier Z28's regardless of the gears, I have seen a factory 1995 2.73 car with a 150 speedometer in it.

its hard to make out what you typed there, its very confusing. a-4 cars did infact come with a 3:23 posi readend as an option, which consisted of a 1,2,3,OD counsole. a-4 cars also had a standard 2:73 rear end which was posi also, that had a 2,3,OD counsole. my car was a 2:73 posi rear end w/ the 150 mph speedometer, because it came w/ Z rated tires from the factory.
Old 09-12-2006, 01:11 PM
  #34  
11 Second Club
iTrader: (88)
 
the_merv's Avatar
 
Join Date: Mar 2006
Location: The Beach...
Posts: 19,653
Received 251 Likes on 192 Posts

Default

We both said the same pretty much..
Old 09-12-2006, 01:49 PM
  #35  
12 Second Club
iTrader: (35)
 
Schweet97Z's Avatar
 
Join Date: Jan 2006
Location: Danville PA
Posts: 1,550
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by the_merv
We both said the same pretty much..
Old 09-13-2006, 10:44 PM
  #36  
TECH Apprentice
iTrader: (6)
 
OnA Fan's Avatar
 
Join Date: Feb 2006
Location: Tampa Bay Area
Posts: 322
Received 10 Likes on 9 Posts

Default

I always assumed I had a 2:73 rear. After reading some of these posts, I checked the sticker and sure enough, the GU5 code is there



Quick Reply: 110 mph speedo in Z28



All times are GMT -5. The time now is 04:07 AM.