PowerBond Street Performance Harmonic Balancer - SB Chevy 400 - 8" Diameter - External Balance Pushrod they are built to OE

they are built to OE specifications

Includes fitting for manifold reference

this flat one-piece guide plate set is designed for Oldsmobile 350-455 engines with 5/16" studs and 5/16" pushrods

H9 Halogen

PowerBond Street Performance Harmonic Balancer - SB Chevy 400 - 8" Diameter - External Balance Pushrod they are built to OEThe POWERBOND STREET RACE series brings bonded balancer technology within the budget of every performance street engine builder from mild to wild. They also make a great heavy duty standard replacement balancer. POWERBOND STREET balancers are also perfect for limited spec race classes such as late model stock that require an OEM style balancer. The bonded dampening rubber in every POWERBOND STREET RACE series balancer eliminates spinning and component