PerTronix SB Chevy Ignitor III Distributor w/ Vacuum Advance & Black Cap RS00100411 Valve springs with larger diameters

Valve springs with larger diameters require retainers to handle the higher pressures developed by the springs

located inside the transmission tailshaft housing

and other poly-lock style rocker assemblies

826 in Long

of torque over stock

PerTronix SB Chevy Ignitor III Distributor w/ Vacuum Advance & Black Cap RS00100411 Valve springs with larger diametersPerTronix D7100710 Flame Thrower Electronic Distributor Billet Chevrolet Small Block Big Block with Ignitor III Vacuum Advance Black Male Cap. Features: Plug n' Play billet distributors are designed for maximum ignition performance at a price you can afford Our Billet I3 distributors ship with Ignitor III multi spark rev limiting modules. Precision CNC machined 6061 T6 billet aluminum housings are light Pertronix manufactures a broad range of ignition