PAC Racing 1300 Series Valve Spring Dual Spring 513 lb/in Spring Rate 1.150" Coil Bind - 1.564" OD 23-FLX-W-XL ApprovedDoes not require an MSD

PAC Racing 1300 Series Valve Spring Dual Spring 513 lb in Spring Rate 1.150" Coil Bind 1.564" OD 23 FLX W XL ApprovedDoes not require an MSD ApprovedDoes not require an MSD Ignition ControlSupplied with an HEI style distributor cap and rotor (accepts Cap A Dapts)Nylon pads ensure smooth operation of the advance weightsAdvance weight pins are staked and tig welded to the plateMechanical advance assembly can be locked out for crank trigger systemsAdvance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reductionPolished steel shaft is QPQ coated and guided by two sealed ball bearingsMaintenance free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeEasy to adjust mechanical advance with supplied springs and stop bushingsCNC machined billet aluminum housing and billet aluminum baseVacuum advance canister for improved economy (can be locked out)Easy to adjust mechanical advance with supplied springs and stop bushingsPowerful built in module produces a 7 Steel plate is useful for many building projects or fabricating brackets