First 318 build, cam question
With 2.76 Gears and Power-Brakes
The Edelbrock #2177 will work with the 'stock' Valve Springs {#178 lbs. @ Valve Open},
as the .420" Lift fits within that range.
If you step up to the Compu-Cams #XE-256H {.447"/.455" Lift}, that Camshaft is equivalent
to a 1968 '340' Stock-type Camshaft.
You will need 'stiffer' Valve Springs {ie; Stock 340 with a Load-Rate of #240 lbs. Valve Open}.
And, it works best with 3.23 Gears, not 2.76 'Long-Haul Road Boys'.