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#1
02-03-2026, 12:39 AM
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Rear end ID help needed
All, I'm looking at a rear axle, and need help id'ing it.
Casting number is N 1235542. Stamping on the axle tube is JA G279 1 Wheel mounting surface width is 60". I have no info on perch to perch width. Looks to be an 8.5, but I am having trouble nailing down whether it is a Nova rear end, or a 2nd gen rear. Target vehicle would be my 67 Firebird, which is already running a Nova rear end with 3.73's. JA looks to be 2.73's, which would be a killer cruising gear. Any help appreciated, thanks!
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