what actually works great in that head is sbc chevy .100 long valves. they are almost identical in length. i went with 2.02 and 1.625. now keep in mind you'll have to go with 11/32" guides,retainers,locks and seals when doing this. there are a lot of different brands and choices(read inexpensive and options) for valves by using this setup.you'll also lighten the valve train with that combo.