360 stumbles when going from full idle to full throttle.

I need help. I have a LA 360 that came with roller cam from the factory. I put a Hughes engines Whiplash roller in it. I also put on magnum heads with a airgap intake. I have a Edlebrock 750 on it with stock Chrysler electronic ignition. When I'm at a dead stop and floor it, it stumbles very bad or kills the engine. I went through the carburetor, checked the float settings and accelerator pump. I set everything like the manual said. If I ease into the throttle in runs good and has great power for a low compression engine. I have the timing set at 22 degrees at idle and 38 at full advance. I'm really impressed with the whiplash cam. I had another 360 in this truck (which by the way is a 57 chevy) that had 10 to 1 compression and a flat tappet mutha thumpr cam. This low compression 360 feels like its has more power than the high compression 360 and I'm not having to run a high stall convertor with it or 93 octane gas. The whiplash cam don't have as good a sounding idle as the mutha thumpr has but still sounds good. Thanks in advance for any help.