'75 360 Rebuild, Cam?

Depending on what is done, YEP!

Here is what Shaddy Dell is doing for $750.
Remember the added cost you have with shipping to and from other out of state places. It is approx. a little over a $1 per pound.

EDELBROCK HEADS:

STAGE 1 PORT WORK: $325
Details: Stage 1 porting consists of an intake and exhaust bowl blend. We hand blend the the bottom cut of the valve job to the bowls going approximately 1 ½”-2” down into the bowl. On the exhaust side this includes hand radiusing and ovaling of the exhaust seat area underneath the 45* seat angle. On the intake side we “chatter” the valve seat under the bottom 60* cut with a carbide to help break up the wetflow as it crosses the valve seat. The exhaust port will also get the short turn and ST corners radiused. The intake port will get gasket matched, and the pushrod pinch area will be opened up to .950” wide. The rest of the intake ports and exhaust ports will remain untouched, in as cast state. NO chamber work of any kind is performed.

STAGE 2 PORT WORK: $550
Details: Stage 2 porting consists of Stage 1, plus: Intake runner head bolt bulge will be eliminated, intake short turn will be radiused and widened slightly. Combustion chambers will be de-shrouded to 4.08” Bore size, fully sand rolled with 120 for an ultra fine finish.
The rest of the intake runners and exhaust runners will remain AS CAST, with no blending/shaping or sand roll work performed.

STAGE 3 PORT WORK: $750
Details: Stage 3 porting consists of Stage 1 and 2, plus: Intake and exhaust runners will be fully blended/shaped, every inch of all ports/chambers will be touched with a carbide/sand rolled for maximum flow and surface finish. This is maximum flow 2.02” port job we can do on an Edelbrock head, and is the most popular stage of port work we do.

STAGE 3 PORT WORK

LIFT------IN/EX
.100"----77.6/N/A
.200"--144.9/112.2
.300"--204.3/151.8
.400"--255.3/189.8
.450"--276.0/199.1
.500"--286.0/201.9
.550"--292.2/206.3
.600"--297.4/208.4

IF, you were to take full advantage of these flow numbers with a max or near max effort, you would have the ability
(On paper at least, your combo will have to be stout!)
to make more than 600 hp.

The cam is small and the additional HP amount I can not verify.
With a 1.6 rocker, you will be lifting the valve to approx. .573/intake.

For what it's worth, I think my current set up runs very well. The extra work may not produce huge results or what you expect. This extra work is elective.