It looks like a valve that is around 5.5" would work good? The valve I modified was 0.200" from the retainer lock to the tip, and the Edelbrock valve are 0.250", but the 5.5" figure takes the 0.050" into account. I need to take the heads, rockers, and stuff to the cylinder head guy I use and see what he thinks. He is a Manely valve dealer and got me a deal on severe duty valves for my B1 B/S heads.
