For those who have them, to get the diameter if its not handy:
1. Use a tape measure to measure the circumference
2. measurement of circumference = 2*pi*R
3. R*2 = measurement/pi = diameter
i dont have a set otherwise i'd get it to you.
Why not just measure the diameter? Rofl. How hard is it to put a tape measure across the fans? If you can't measure the diameter, how are you going to measure the circumference?
1969 Chevy RCLB C10 350/TH400 SOLD
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