Looking for some info on identifing a 1959 9.3 rear end , number location and a chart for the gear ratio , any info would be appreciated , thanks

 

1957 -1964 CodeS 9.3 PONTIAC AND OLDSMOBILE
IF YOU HAVE A 'L' FOLLOWING THE NUMBER IT IS LIMITED SLIP DIFFERENTIAL POSI (ANTI-SPIN, SAFETY TRACK )
(REFERENCE PICTURE) 0L (3.08 LIMITED SLIP CODE)
LOCATION OF CODE IS ABOUT 7 O'CLOCK AREA
2.56 3
2.69 2
2.87 7
3.08 0
3.23 9
3.42 8
3.64 6
3.90 4
4.10 1
4.30 5
J D RACE
JIM

 

Thanks very much , l have two 59 rear ends , both with 8 stamped , no posi but still not a bad ratio for a hot rod , 3:42 , thanks again.

 

We have the posi units for them NEW
Eaton
Expensive....But we have them.
31 spline only.

 

Can you give me the contact for the posi units ?

 

JDRace.com