Re: 72 12 bolt 4 series to 3 series swap?
My understanding is 3:08 gears only are for 3 series carrier. 4 series starts at 3:73 and goes numerically higher
Truck 12 Bolt Series 2 = 2.73 - down (smaller numerically) Series 3 = 2.76 - 3.42 Series 4 = 3.73 - up (larger numerically)
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