In a ten bolt rearend, what is the difference between a 2 series carrier and a 3 series carrier?

 

2 series is thinner(3.08 and lower numeric gear ratio) and 3 series is thicker(3.23 and higher numeric ratio). It's done because as the gear ratio gets smaller the pinion gear gets bigger and the ring gear needs to be moved over to align correctly.


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350 with stealth intake, holley carb, 470 lift cam. 700r4 with .5 boost valve, vette servo, tci lock-up kit, B&M megashifter. Richmond 3.73 gears, powertrax locker, timkin bearings, synthetic lube. Custom 3 inch single into 2 2.5 pipes. 1 1/2 drop springs, 1 5/16 solid front sway bar, 1 inch rear bar, custom subframe connectors, custom LCA relocation brackets. Kobel ground FX, currant red metallic paint. Lots of other stuff...
82camaro