6L80E / 6L90E 1-2-3-4 Piston, Sonnax #104984-01 Replaces GM #24238700

GM 6L80/6L90 1-2-3-4 pistons commonly crack due to cantilevered stress on the cast material. The OE part has been through several revisions in an attempt to correct this, but all OE versions are still chronically known to crack. Sonnax 1-2-3-4 piston 104984-01 is made from stronger, billet aluminum and has superior design refinements that add additional strength […]


Speedometer Gear Calculator”

Speedometer Gear Calculator” Speedometer Gear Calculator, Click Here Speedometer Calibration: Variables such as the vehicle’s axle ratio and tire diameter affect the accuracy of the speedometer. The following speedometer drive gears and driven gears are available for the 700R4 / 4L60 transmissions. Most cars and trucks with low rear end ratios will take a 15 […]

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