LA 340 Intake Manifold

The M1 single plane is designed for 3000 - 6500 and then some.
For cruising around town, I suggest a RPM-AG. I’m not sure if the power you’re looking for so a cam duration can float in between a 224@050 to a 248@050 which is pretty healthy for a street cam.
Do you know your gear ratio and are you happy or OK with the current cruise rpm?
Hi RF thank you for taking the time to read and teply!

I installed a Suregrip 355 rear gears and its fine. Wish I actually put a 410 in it. But its not for long highway cruises.

Power wise I honestly could use some guidance on a configuration/combination that would make sense including cam and type of carburetor (if my mechanical 650 1450 double pumper mech adv isn't ideal) what cam and converter. Stroke de-stroke leave stroke etc.

At a minimum it sounds like the M1 wouldn’t be all that great 1500-2500 RPM where the around town cruise speeds would be used often.