See, my memory is fading fast, lol.
I do the same with my own heads. A good quality stainless small block chevy exhaust valve will work. I like Manley valves primarily because I can get valves with the stem back cut at the valve. That and in all the years I have used their exhaust valves, not a single failure. So I stick with what works. With these heads, every little bit helps. The 1.6 valves for the exhaust, yes I install them but you do have to clearance the combustion wall a little and hog out the bowl a bit to make use of them. Same for the powerglide valves.
I don't own a flow bench or have access to one. Would love to of course but no dice at the moment. But I have always been curious as to what effect larger valves, larger valves and a little hogging out, back cut valves, other stuff actually has on a 235 head. If I ever get access to a flow bench, I would love to sort some of this out.
Last edited by Dragsix; 08/23/2023 3:07 PM.
