Cuzzfuzz - Your picture you have linked in your post did not get saved into the Attachment Manager, so doesn't display and can't be viewed by clicking on the link either.

You'll need to try and post the picture again and see if it will display.

Meanwhile, here's a great source for the front axle spring information in GM's 1941 Chevrolet Truck Data PDF. Below is an extract on the spring details for a starter point to answer your questions.
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~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)