just got my 462 heads back from the machine shop. They are c6ve with egr (cali car)the ports are: 2.262 x 1.231 intake 1.869 x 1.195 exhaust
valves: intake 2.026 exhaust 1.651
spring height 1.70 dia. outside 1.444 spring wire thickness .193 so .193 x 2 = .386 subtracted from 1.444 = 1.058 is the inside spring diameter
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