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  • Big rim rear end gears ratios calculator explained. Do they work? Buy online for 65, 66, 67, 68, 69, 70 and 71 a body.
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64-72 GM A BODY BIG RIM REAR END GEAR KIT FOR CUTLASS, MONTE, MALIBU & MORE

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Improve your acceleration and do some crazy burn outs with our big rim rear end gears. These rear differential gears will let you smoke your tires with ease! The gears have the correct ratio to make your transmission shift as it should with 22″ or larger rims and tires. These gears install in stock differential housings. If you are running an aftermarket rear end, please contact us for fitment information.

We have these gears available in 2 different styles:

  • Big rim style will make your car drive and accelerate like it did before you put the rims on.
  • Big rim burn out style will gear the car for low end torque. This is great for doing massive burnouts although you will loose some top end. We do not recommend the burn out style if you do a lot of highway driving.

Fits: 1964-1972 Oldsmobile Cutlass, Chevy Monte Carlo, Chevelle, GTO, Pontiac Grand Am, Buick Century, LeMans, Regal, Malibu, Skylark, Tempest, El Camino and Gransport, Gs, Special, Sport, Nomad, SS, 442, F85, Vista Cruiser, Grand Prix, Ventura, Sprint, and GMC Beaumont.