J.W. Performance Crank Adapter Sleeve SB Ford To GM Trans Cylinder Heads & Components IMPROVED FLOW CAPACITY - Mandrel

IMPROVED FLOW CAPACITY - Mandrel bends (where applicable) improve flow capacity over traditional bends while increased pipe diameter from OE sizes increases flow and power

Crisp Throttle Response

Meets NHRA/IHRA Safety Rules

Universal fitment for single and double center pin applications

1979-1992 GMC G2500

J.W. Performance Crank Adapter Sleeve SB Ford To GM Trans Cylinder Heads & Components IMPROVED FLOW CAPACITY - MandrelProduct Description: Crank Adapter Sleeve GM Converter to Small Block Ford Crank Steel Natural Sold Individually J. W. Performance Transmissions is a manufacturer of automatic Transmissions and component parts for circle track, drag racers, off road racers, street and strip enthusiasts. J. W. Performance Transmissions, Inc. began its operation in 1976 with one goal in mind: To provide the highest quality product and customer service in the business.