Yes, there's still tension in the spring. When I tested the spring with the heat gun before putting it into actual use, it fully released the valve with no residual tension. I don't know how much hotter the heat gun is than the engine under real world conditions. Your spring concoction looks ideal.
1946 Chevy pickup, 1948 Chevy suburban, 1950 Chevy pickup, 1952 GMC pickup, 1957 Chevy pickup, 1939 Chevy pickup
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