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What rear is it? 8.2", 8.5", 7.5", 12-bolt? We need more info. Also, what's the casting date?



JA = 2.73 open in a 1973-74 Nova or 2.56 open in a 1975 Nova
G = Detroit Gear and Axle assembly plant
178 = assembly date, 178th day of the year (June 27th or June 26th of a leap year)
4 = ???
 

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Discussion Starter · #3 · (Edited)
decode my reae end

the rear looks like the 8.5. where can i locate the casting numbers? i have another quesstion .i bought a rear end off of ebay had it put in but it seems to be holding back when i drive it as i approach a stop sign i can hear the tires scrathing a little also with both wheels in the air i try to spin the wheels but they are very hard to turn.what could be the prolem with that? anwers are appreciated
 
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