Making some custom valves 12 Mar, 2017 in Head Hoggers tagged harley engine kits / harley machining / Harley Performance / harley service / Head Hoggers / motorcyle tuning by headhoggers Well, had to use some big block chevy valves for this build. These are 2.300 IN and 1.800 EX. Ordered them as blanks so now cutting to what we need.