( I presume they are 11/32 stem +~.100 SBC valves) Valves are 5.200 length. TF uses same lenghth valve in some ford and LS applications. I am putting the Ford 2.08 intakes in mine. Also 1.60 Exh for the Ford in mine. They are 8mm stem instead of 11/32" so are a little bigger but lighter.