Thumper

@ProStocker273 that's a good question.
IDK if either of those cams are right for you. My notes suggest that 240* is gonna peak at around 5400, so Ima thinking neither is right for you.
The Mopar 292/292/108 (248@050) peaked very near to 5400 in my 367 cuber at 11.3Scr, so there's that,lol. I still spun it to 7200 cuz she was willing, and in a streeter it don't matter, cuz the tires never stop spinning in two gears; but I sure wouldna won any races. I never tracked this combo.
The power plateau of that 292/108cam was short, about 300/400 rpm but the drop -off was fairly rapid, just right for the 4-speed. But when reving to 7200 with a .73 powerband, on the shift,the Rs dropped back to 5250 which was very near to the power peak, so the car leapt ahead on the shifts; you could really feel it on the 2-3 shift. It was a lotta fun.
But I think those cams you listed are too small for a 7000/7500 shift.
The regular A833 has ratios of 2.66-1.92-140-1.00, and splits of .72-.73-.72, so
shifting at 7000(x.725) the Rs will drop to 5075. So your powerband is gonna need to be from 5000 to 7000. That's a lot. And I thing you'll need more cam. But I can't comment on how much more because my data stops at the 292 because that's the biggest I have run on the street.
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I would guess, for competition, you might need at least 2 sizes bigger than 240@050. But if this is a gas engine, I sure wouldn't screw it together at 9.5Scr . Also, Ima thinking you would need a solid lifter cam. And then with solids make sure the numbers you are working with are after-lash numbers.
But then, I'm a streeter and know nothing about racing. Especially not with a 318@2600 pounds.
Call your cam-guy. He is way smarter than me.
If you could make that 279ThumpR idle at 700 with a tunnel-ram, on a 273,at 9 to 1; Ima thinking you're a pretty good tuner, because 74* of overlap is quite a bit. IIRC my 292 had 76* and it was a handful at 700.but it sure sounded good.