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diff code to corroded, how to ID?

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Old Sep 10, 2010 | 02:12 PM
  #1  
vendetta's Avatar
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Joined: Nov 2008
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From: Calgary, Alberta
Car: 1990 Iroc-Z28
Engine: 350HSR
Transmission: HD 700r4 B&M Stage2 SK
diff code to corroded, how to ID?

so i wanted to get under the car and just check to see just what rear end/gearing i have, the codes pretty coroded away and cant read it

its a 1990 Iroc and its a 10 bolt, never really paid much attn to my burnouts so im not to sure if its posi either, any other way to ID this?
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Old Sep 10, 2010 | 02:40 PM
  #2  
DJP87Z28's Avatar
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Joined: Mar 2003
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From: Florida
Car: 1987 Black IROC-Z (SOLD)
Re: diff code to corroded, how to ID?

Originally Posted by vendetta
so i wanted to get under the car and just check to see just what rear end/gearing i have, the codes pretty coroded away and cant read it

its a 1990 Iroc and its a 10 bolt, never really paid much attn to my burnouts so im not to sure if its posi either, any other way to ID this?
Only stock rear for 1990 5.7 was a 10-bolt 3:23 and a Limited slip rear G80 was a required option.
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Old Sep 10, 2010 | 03:38 PM
  #3  
camaronewbie's Avatar
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Joined: Sep 2002
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From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: diff code to corroded, how to ID?

Only way to know for sure exactly what it is - take cover off and look. If it's stock, at 20 years old it needs a fluid change anyway.
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Old Sep 11, 2010 | 01:12 PM
  #4  
ZimGTA's Avatar
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Joined: Dec 2003
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From: twin cities
Car: 88 GTA
Engine: 383
Transmission: 700 r
Re: diff code to corroded, how to ID?

Mark a line on the driveshaft and a rear tire. Turn the wheel 1 turn, count the revs the driveshsft makes. 3.25=3.23 3.5=355 ectc.
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