how to check rear end ration with out pulling the cover?
02-14-2009, 08:09 PM
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Car: 1990 firebird formula
Engine: 5.0 tpi
Transmission: t-5
how to check rear end ration with out pulling the cover?
my car has a posi and not sure what axle ratio was.how can I check it with out pulling the diff cover off?
02-15-2009, 08:20 AM
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Re: how to check rear end ration with out pulling the cover?
This is true, but you can get a rough idea of what it is by counting the drive shaft revolutions. If it has a posi and it is in good working condition then try this. Raise the rear tires off of the ground and put the transmission in neutral. Mark the rear tires in the 6:00 position. Have someone else watch one tire while you turn the other. Mark the drive shaft where you can see it. Turn the tire exactly one full revolution. Have the other person watch the other tire to be sure that it also turns exactly one revolution. If it doesn't then this will not be accurate. Count the number of times that the drive shaft turns. If it turns just over 3 times then it is a 3.08, if it turns 2 3/4 times then it is a 2.73, if it turs 3 1/4 times it is a 3.23, if it turns just short of 3 1/2 times it is a 3.42, and 3 3/4 times would be a 3.73.
02-15-2009, 10:33 AM
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Car: 1992 Camaro RS Convertible
Engine: L03
Transmission: 700R4
Axle/Gears: LS1 posi/disk 3.42
Re: how to check rear end ration with out pulling the cover?
have you tried checking for the RPO code in the center console? just a thought assuming you car is completely stock, but yea pulling the cover would be the surest way to tell........
GU2 = 2.73
GU4 = 3.08
GU5 = 3.23
GU6 = 3.42
GU2 = 2.73
GU4 = 3.08
GU5 = 3.23
GU6 = 3.42
02-20-2009, 09:09 PM
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Re: how to check rear end ration with out pulling the cover?
thers a code on the passenger side of the axle on the tube on the front u will have to clean it off with a wire brush or something like that a 3 digit code then you can check it with the haynes manual
02-20-2009, 09:15 PM
#6
Re: how to check rear end ration with out pulling the cover?
http://sethirdgen.org/reardata.htm
JamesC
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02-20-2009, 09:27 PM
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Car: 93 Formula,88 T/A,01 WS6
Engine: 93 LT1,88TPI305,01 LS1
Transmission: 93 700R4,88 700R4,01 T56
Axle/Gears: 93 3:73's,88 3:42,01 3:40
Re: how to check rear end ration with out pulling the cover?
Just pull the cover,its not hard to do and it probably way over due for a gear oil change anyway......dont forget to put in limited slip aditive!
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