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The gears will actually be 4.56's and that rear end is known as a Corporate or Eaton rear end and also coded as a HO52 (3/4 ton) or HO72 (1 ton). You don't have a lot of choice in gears in it. 4.10's and 3.90's(aftermarket). You might want to swap it with a 14 bolt and save yourself the future repair headaches. Although they are bullet proof, the parts are spendy and sometimes hard to find.
You will need a 454 flywheel should you go that way. 454's are externally balanced and part of the balancing is in the flywheel.
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1971 C-10 Suburban (Ochre)
1971 K-10 Suburban (Ochre)
1972 C-10 Suburban (Ochre)
1972 K-20 Suburban (Yellow- that just aint right!)
Springfield, Minnesota 56087
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