Try Ferrea F5144...thats what I use. They are 3 hundreths longer...and I usually take some off the stem anyhow...easier to be longer than shorter.
I have a few sets of used stock valves in great condition if you wanna go that route. Just pm me an address. I'll head to shop today or tomorrow to check valves and true up the seats.
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.
