I used Neal's method with two clamps, 500° F in the oven and the shaft in ice water and it was still hard with my 20 ton press. I had to reposition the clamps a few times since they kept slipping. I did get it on with no damage.
https://www.fordbarn.com/forum/showt...ight=neal+gear
https://www.fordbarn.com/forum/showt...ight=neal+gear