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Have you checked out spring cups for thinner ones? Sounds like you are close to having plenty of clearance. How much lift is on your cam?
I am using .045 spring seats and those are the thinnest I could find. The cam is only .741/.718 net lift accounting for lash. I'm there, just need to get the pattern sorted out.
Good to hear you are OK. Things that crossed my mind besides the cups are just how much room there might be (if any) to cut the pockets, or even them out. Seems like a lot of us are always looking to go faster, and lift is a big part of that.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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