Old horse new beating cam question
If he doesn't want to change the valve springs, leave the old cam in it. It's really that simple.
Lol, that would certainly solve the problem. I think honestly he would have no problem with that. If I'm being honest, I would have to say that my other son and I are really the ones trying to get him to do a cam swap with the intake and carb swap more than he wants to. His engine has front and rear main seal leaks, his freeze plugs are slow leaking, power steering leaking everywhere. What he really needs is to pull the whole engine out, do at least all new gaskets along with his carb and intake swap. To his brother and I, it's senseless not to go with a new cam, lifters, springs, timing chain set at least. Personally a 50 year old engine, I'd do rings, bearings, bead hone, etc. And then put a 727 transmission in place of the 904. Which we got ready to go on the shelf. Lol, but it's his car, so whatever he wants. His brother wants to buy him the cam, lifters, springs as an early Christmas gift. I'm willing to pay the shop to clean, surface, spring swap, etc.