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Re: Help me ID my rear
Replace the gear oil & run it.
It's called a 55T rear axle. It has a 9 3/8" ring gear. You won't blow it up with a 5.3. If you want to kill this thing, you'll need fire.
Parts are scarce but they can be rebuilt. You can't get a posi or a range of gear ratios, though - so if that's a deal breaker, walk away from it now.
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" Over my head"
1957 Chevy 3200, big rear window & 6 lug.
Front disc, power steering, Vortec 4.8 / 4L60E swap, hydro boost brakes & patina.
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