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I'd like to find out more about these heads. Casting# 3991492. These are cast iron angle plug heads. I'd like to know what are the size of the valves and combustion chamber volume? I also like to know what year and car this distributor came from, delco-remy #1110385, its a dual point, no vac adv, with a tach drive.
According to my book....your heads are 1973 Camaro/Corvette hi perf heads for a 350. Would imagine they are 2.02/1.60 but that's based on fact listed as hi perf, not directly specified in my source. I can't find a distributor with that number in my book. Sorry....