KG78Z Posted December 17, 2002 Share Posted December 17, 2002 Shortly I am going to be putting a turbo L28 into my 78 280Z. My donor car has an automatic transmission, I curently have a 5 speed with a 4.11 rear diff. I plan onswitching back to a 3.7 rear diff. I believe that my parts car with the automatic has a 3.7 rear diff in the car (please correct me if I am wrong). If it is a 3.7 rear diff in the parts car will the speedometer cog from the automatic transmission fit into my 5 speed? Thanks for any help. KG78Z Quote Link to comment Share on other sites More sharing options...
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