Looking for more 408 pull at the big end?

Cam to me seems small. I would want something more approaching 260@50
Also its gonna be a lot faster with a real convertor.
To give you an idea, i have stock stroke 360. Howards 260/264 cam. 10.3 compression. 1 5/8 headers. 950, airgap. 410 gear. Runs 94 in 1/8 1.52 60 foot, but 5200 convertor. Right at 3300 with me in it. Mild ported eddies. My cam is a hair too big, but was in stock when i needed one quick. Perfect for yours.
Two things..... convertor, are the heads good. Heads not good= low power. But convertor definately far from optimal