HEI module in a duraspark box.

Close-up of a tangled engine wiring harness with multiple connectors Hand holding a gray electrical connector with red, brown, and yellow wires. Another connector is visible nearb Engine bay with a hand holding a bundle of wires near a distributor cap and oil filter Hand holding green and orange wires from engine wiring harness Black automotive part with a greasy metal rod extending from it, resting on wood blocks Engine oil filter and part of a flywheel Close-up of engine part and oil filter, with a pickup truck in the background 1981 Ford Bronco photo Flow-test line chart for a Purolator PV118C 2099 PCV valve plotting flow versus inches of Hg Flow-test line chart for a Purolator PV736 2051 PCV valve plotting flow versus inches of Hg Wiring harness with white connectors and a label reading 'TO S 01' Hand holding a male and female electrical connector near engine wiring Hand holding a wiring harness connector with multiple colored wires. Battery and other engine components visib Hand holding a gray electrical connector with red, yellow, and black wires. A red cable is visible below Hand holding electrical connector with red, green, and yellow wires Hand holding a black electrical connector with blue, white, and yellow wires 40photos in this albumView all