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First Gear R150 Case

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Master transmission builder Angelo Ferrari also installed a First gear out of an R151F transmission from a turbocharged four-cylinder truck into the R150 case, giving us a 4.3:1 First. Even though our older G54 has a slightly lower 4.45:1 First, the new transmission has a larger input shaft and front counter bearings and First gear is larger than previous versions and Fifth gear is mounted closer to the center plate for added strength and rigidity.

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