W7 INFO

yellow rose said

I don't remember. My first thought was no, but looking at them I think you *MIGHT* be able to use W2-5 stuff. You'd have to do some machine work on the rockers because IIRC the valve centers are farther apart on the W7 which is why they come with 2.150 and 1.650 valves. I just don't think the exhaust needs to be that big. If you could get a 1.600 valve in there with the right valve job you could use a 2.200 intake valve and not crowd the valves any more than they already are.

I'm just not a fan of big exhaust valves.

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YR, the valve spacing is only .066 wider if I recall correctly.
I was thinking as wide as the pad is on the iron rockers it would be fine. This will definitely be a learning experience for me. I will share as I find things out and will appreciate any knowledge you all can share.
My first thing is to figure out what valve length I need. The valves I have are too short to get any installed height. They are w7 valves the box says 5.46 if I remember. I think w9 valve length will work. Who knows what I may find at Indy in March.