Improved Combustion System (With Transmission Controlled Spark): Description: Notes

NOTE: Some engines use other systems. See 1972-73 Toyota Transmission Controlled Spark.

System consists of a modified carburetor with throttle positioner, transmission controlled spark circuits, vacuum advance and retard diaphragm, speed marker thermo-sensor, vacuum switching valve, shift point sensor (8R-C manual transmission) and a modified distributor.