Determining rear end ratio
Thread Starter
Registered User
Joined: Mar 2012
Posts: 548
From: Hickory, North Carolina
Determining rear end ratio
Is there another way to determine the gear ratio on a 69 Olds 98 besides removing the cover? The tag attached says only limited slip differential and shows no ratio data.
Registered User
Joined: May 2011
Posts: 3,688
From: Delta BC Canada
Fyi
It will be a 2.56 or a 2.93.
jack up the rear & turn the driveshaft counting the turns of the wheel. If it goes around 2.5 times it is a 2.56 & if it goes around almost 3 times it is a 2.93.
jack up the rear & turn the driveshaft counting the turns of the wheel. If it goes around 2.5 times it is a 2.56 & if it goes around almost 3 times it is a 2.93.
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Registered User
Joined: Mar 2012
Posts: 548
From: Hickory, North Carolina
Old School Olds
Joined: Nov 2008
Posts: 9,271
From: Marble Falls TX
On the a body there is a two letter code on the axel
tube, on the pass side, between the pumpkin and shock
mount. Not sure if it is there on the b body, but I bet it is.
Could be stamped upside down as well. Check for the code
and it can be decifered through FAQ I belive.
tube, on the pass side, between the pumpkin and shock
mount. Not sure if it is there on the b body, but I bet it is.
Could be stamped upside down as well. Check for the code
and it can be decifered through FAQ I belive.
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