Trying to determine gear ratio
#1
Trying to determine gear ratio
Hello,
Trying to determine what my current gear ratio is and I can't find any markings so I tried jacking up the rear end and counting how many times the driveshaft spins for 10 spins of the tire but the number I got, 14, doesn't make sense from what I've read because I was expecting between 25 and 30. It's a 1968 Cutlass S with an O type open diff. Here's a video and some pics. Am I doing something wrong to figure this out?
Trying to determine what my current gear ratio is and I can't find any markings so I tried jacking up the rear end and counting how many times the driveshaft spins for 10 spins of the tire but the number I got, 14, doesn't make sense from what I've read because I was expecting between 25 and 30. It's a 1968 Cutlass S with an O type open diff. Here's a video and some pics. Am I doing something wrong to figure this out?
Last edited by patmac; March 2nd, 2017 at 09:10 AM. Reason: add pictures
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