'75 360 Rebuild, Cam?

AJ/FormS said
With 3.55s and 27s, your hiway rpm @65mph,will be 2800 to 3000 depending on TC slip, grade and wind. This is the first and worst problem to achieving fuel mileage. Rpm just kills it. You only have 2 options; 1) an overdrive, and 2) less rear gear.
Scenario #1
3.23s are 10% less rpm at cruise

And that’s all you needed to say....
But it isn’t try. There’s more than one way to skim the mileage cat.

Scenario 2 is to keep your 3.55s , and keep your 727, and re-examine the cam choices, the cylinder pressure, and the TC. But one thing remains the same; with a true, measured,9.5Scr, on the start-line, you will have to play the balancing game between gear,Stall and cylinder pressure; and for performance, economy usually is the loser, no matter how fast the rate of lift on the cam is.

You act like this is a problem all the time but hot rodders have been running this combo longer than your Alive, GET OVER IT!