Seeing if this cam is good and if it will work

^^ agree with 12many

With a low-C 318, the fastest , cheapest, most funnest things to do are ;
up the stall, and up the gears. And up the rpm capability.
These first two will get you off the line with tires blazing. By second gear the stall is no longer helping much, but the gears sure are. Gears will allow the engine to spool up more quickly, and you will blast thru the gears quicker.
Next would be a free-flowing exhaust.
A cam with a later closing intake valve, and No other changes, is guaranteed to lose low speed power and then you gotta wait for it to come back, and finally, about 3 or 4 seconds later, it comes around. Good for passing ........ maybe...........
With 25.5" tire, in First gear, and 4000 rpm,
2.76s = 40mph
2.94s = 37.6
3.23s = 34.4
3.55s = 31.2
Do you really want to wait that long for the giddy-up to arrive?
3.91s are 28.3mph, still not that exciting (compared to 3.55s),with a Lo-Stall TC that might hit 1800/2000.
But with a 2800 and a 4bbl, those 3.91s will scream off the line. and keep right on screaming
Here's why;
At 1800/2000rpm your 318 might be making 50/60 hp.
At 2800 with a 4bbl, probably close to double that,
Add a cam to her, and lo stall is not gonna make even one horsepower more, and neither will the 4bbl.

Here's another way to see it;
Say your engine makes 60hp at 2000rpm; that is 158 ftlbs at the crank and by the time it gets to the axles with 2.76s, that will be about 1700ftlbs at WOT
Say at 2800 with a 4bbl, it makes 100hp; that is about 188ftlbs at the crank. and out the back door with 3.91s, is 3240ftlbs at WOT............. That is nearly double!
If you left the stall and gears the same (low and 2.76s) and added a cam and 4bbl, and the engine breaks even at 158 ftlbs, that will be about 1700ftlbs at WOT.... again. And you will be many dollars broker and sporting one loooong saaad face.