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Here’s the star of the show: the GMPP 4L70E ($3,049, street price). The gear ratios are still the standard pack found in the 700-R4 and 4L-series at 3.06, 1.62, 1.00, and 0.70. The 4L70E also gets several key upgrades targeted at hot rodders: • Rated up to 480 hp • Includes friction-reducing components that send more power to the axle • Thirteen-vane pump with a heat-treated stator support • Five-pinion input and reaction carriers • Heat-treated sun shell • Heavy-duty low roller clutch assembly • Upgraded 3-4 clutch pack and a high-energy 2-4 band • Needle bearing assemblies replace conventional thrust washers to reduce power loss and heat buildup View Related Article
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