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Discussion Starter · #1 ·
I have a 1970 240Z that has a set of 273's in the back. However, one of the bearings cracked and I wanted to replace it but I have no idea where the 273's came from (stock was the 343's). I would greatly appreciate any ideas or information.
 

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Discussion Starter · #2 ·
> I have a 1970 240Z that has a set of 273's
> in the back. However, one of the bearings
> cracked and I wanted to replace it but I
> have no idea where the 273's came from
> (stock was the 343's). I would greatly
> appreciate any ideas or information.
Did you read that ratio off of the gear? I have never heard of one geared that tall either, in any of the irs differentials. 3:36 was in most of the 240's,except auto
 

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Discussion Starter · #3 ·
> Did you read that ratio off of the gear? I
> have never heard of one geared that tall
> either, in any of the irs differentials.
> 3:36 was in most of the 240's,except auto
i got the ratio from the 4th gear (1 to 1) 60mph read tach.. method... 2700 rpms...
 
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