J.W. Performance Rear Support GM Powerglide Billet Aluminum RG30003XL BBK tuned Length headers offer

BBK tuned Length headers offer improved scavenging waves for better combustion

thunder series avs

33 gph Free Flow

3500 / 6400 RPM

Axle king pin bosses are shipped factory reamed for easy installation and also feature threaded Panhard bar stud and shock mounts

J.W. Performance Rear Support GM Powerglide Billet Aluminum RG30003XL BBK tuned Length headers offerProduct Description: Governor Support Billet Needle Bearing Hardware Included Aluminum Gold Anodized Powerglide 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.