'68 383 Barracuda

New to me car- now that weather is getting dry (and hot) around here I've had car out and I'm finding I give it a decent rev up at a stop and ease out clutch and feel like I'm gonna almost bark the tires a bit and take off but it starts to go and then boom - cuts/stalls out..could I be just not goosing it enough/ being too cautious? If I take off with less 'authority' it goes just fine. operator error here? Just askin. I know I'm used to driving smaller sports cars with whole different feel for clutch, etc... Has a 600 cfm double pumper..,EI, moderately upgraded cam,.engine running smooth..
replaced the fuel filter lately?