How do think this cam will behave in 408 ?

My 414 has a Comp 242/250, 106/106 oval track cam, iron heads, Air Gap. Makes torque everywhere. I run a stick with 3.55 gears. No need to downshift, I just floor it. Pulls very hard from my cruise rpm of 2600@60 but is done at 5400. Car is a '71 Duster. I'd go bigger cam than 22*@.050.
I know I could make more power with a bigger cam but this is a semi-daily driver . And I am curious to see how a 4” crank changes the behavior of my current cam . A larger cam would also require more stall , a new cam , lifters and maybe springs . Which means I would have to shell out at least another $1500. Like Ive said I have a brutal Swinger 4 sp that fits that description.