273 questions...a few of them

I have the same cam, 20-246-4, in my 65 273. Put it in last spring, so I have had it in for one year. All other parts were stock, lifters, springs, etc. This winter I have mounted harder springs from Sealed Power. Don't have the part#, but the stiffness is as stock 273 4 bbl springs.
I was very pleased with the motor last summer. Planning the first test run with this winters upgrade on Monday. The uppgrade is 10,5:1 pistons and Spitfire headers, and the valve springs from Sealed Power.