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

Speedo is off on my new purchase

Thread Tools
 
Search this Thread
 
Old 10-14-2005, 04:59 PM
  #1  
Teching In
Thread Starter
 
Z28LT1_Just_Nasty's Avatar
 
Join Date: Oct 2005
Location: NJ
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Default Speedo is off on my new purchase

I bought the car used. My spedo is off by about 10 mph, what would cause this? Possibly aftermarket rear end gearing? If so what kind of gears would cause a 10mph difference?
Old 10-14-2005, 05:44 PM
  #2  
TECH Enthusiast
iTrader: (1)
 
Saad06's Avatar
 
Join Date: Feb 2005
Location: houston
Posts: 653
Likes: 0
Received 0 Likes on 0 Posts

Default

yeah, gears would cause that, if you have an A4, and your gears are shorter than 3.23's then it might show 10 above your speed, if you are M6, and gears are bellow 3.23, then it might show 10 below.
Old 10-14-2005, 06:50 PM
  #3  
hashtagBMW
iTrader: (38)
 
Speed Density's Avatar
 
Join Date: Jul 2005
Location: Boise, Idaho
Posts: 6,572
Likes: 0
Received 2 Likes on 2 Posts

Default

And if you have a 93' i dont know how to fix that..........mines off by 30+
Old 10-14-2005, 10:50 PM
  #4  
Staging Lane
 
markymark's Avatar
 
Join Date: Jun 2004
Location: fort wayne, indiana
Posts: 66
Likes: 0
Received 0 Likes on 0 Posts
Default

Mine was 10 below when I went from 2.73 to 3.73.....but a simple tune took care of that problem.
Old 10-15-2005, 02:39 PM
  #5  
12 Second Club
iTrader: (1)
 
urbanhunter44's Avatar
 
Join Date: Jan 2005
Location: Bay Area, CA
Posts: 869
Likes: 0
Received 0 Likes on 0 Posts
Default

Mine shows 83 when I'm really traveling 65 mph. Damn 4.10s.
Old 10-15-2005, 05:05 PM
  #6  
TECH Veteran
iTrader: (11)
 
infinitebird's Avatar
 
Join Date: Jul 2004
Location: Atlanta, GA
Posts: 4,280
Received 46 Likes on 35 Posts

Default

Just get something to tune with, that's an easy fix (more difficult on a 93 though).

Tunercat has this handy widget.

Old 10-17-2005, 10:34 AM
  #7  
Launching!
 
omaha stylee's Avatar
 
Join Date: Apr 2005
Posts: 279
Likes: 0
Received 0 Likes on 0 Posts

Default

what size wheels are on the car???



Quick Reply: Speedo is off on my new purchase



All times are GMT -5. The time now is 03:14 AM.