S.O.S Series 111 not running right
G'day Roverwill.
I run a set of extractors, into a 2 inch (50mm) pipe throught a Hotdog freeflo muffler (9 years old now ) Bellows like a bull :D I run a Zenith 36 IV carb (had it Recoed 6 years ago ) and if driven sanely will give 16-18 to the Gallon of standard unleaded:) mostly highway running, the Holden will starve in offroad conditions as the bowl is to small.
Use the early FE,FC, FB,EK,EJ, EH, type with the smaller venturi and smaller main jets if going Holden.