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20413 B&M Holeshot 3000 Torque Converter, 1965-91 GM TH400, 1968-81 TH350

10.75 and 11.50-inch bolt circles. 2800-3200 RPM stall;Precision Balanced on Certified Balance Equipment ; Copper Furnace Brazed Impeller and Turbine ; New Precision Alloy Steel Impeller Hub ; Race Proven Technology & Quality ;