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1st Gen ('70-'72): Rear End/ Gears

  #1  
Old 04-09-2016, 10:50 PM
Thread Starter
Join Date: Apr 2016
Posts: 3
Default Rear End/ Gears

What's the quickest and easiest way to tell which gearing I have in my rear end. To my knowledge it's original. 1971 Monte... thank you in advance!
 
  #2  
Old 04-17-2016, 06:27 PM
Join Date: Feb 2009
Location: lakeland fl
Posts: 2,442
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run the vin or if you still have the cars info like the book it should give you a better understanding. what engine did it originally come with and also the original transmission it also would give a general idea. with my mercury it came with a tame 4.6 4r70w 8.8 irs but it came with three tame and a getty up and go gears. 1.) 2.63
2.)2.73 (3.)2.83 (4.)3.11 as a last. a true way is to do a gear fluid change on taking the back off and looking at the gear its self or there should be a templet on the door jame saying what general power train could come with for that year
 

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