Does an increase in airflow (intake or exhaust runner) move peak torque up or down the RPM band?

Was thinking about the talk of port velocity and what you refuted on smaller exhaust @rumblefish360 , am still up in the air on intake manifold and can hear Rusty telling me just to get it done.

I was thinking, after all the advice here, that I’ll build the 360, the car, and eventually the 360 again-probably wanting more power the second time-

-So I am going to go with 2 1/2” exhaust with a crossover. Should be plenty and not restrictive. Versus the 2 1/4” I was originally considering(@rumblefish360 ).

If I remember right though, the f bodies usually had a single exhaust and wonder if it will hang low or be very tight around the axle.

I have two pieces of exhaust pipe/w/muffler welded-up that dump before the axle for the initial driving.

Have been digging through the garage gathering engine parts.

Am using the .030” 1970 360 block, rods, pistons you got me @rumblefish360 with J heads I have assembled (&ready to go 901 springs, 2.02 & 1.60” installed but no hardened valve seats ???)
I picked up a 1406 Edelbrock to start with

Am debating over used 273 adjustable rockers or Chinese stainless 1.6 roller rockers

I think I need calipers, and am not sure what other tools I need for assembly. Am going look at the manual tonight.

Thanks everyone!

I have posted this before; I built a pretty hot 406 sbc, ended up with it in a 92 gmc shortbed. I built the 3" exh. system to dump in front of the axle, it did have a fuel cell, so real headers. I got the bright idea of having tail Pipes bent to go ever the axle and dump behind the rear tires , camaro like, FULL 3" . I COULD NOTICE A DIFF IMEDIATELY WHEN I STARTED IT TO BACK THE TRUCK OUT OF THE MUFFLER SHOP , I DROVE HOME "ABOUT 6 MILES" , AND PULLED THE TAILPIPES OFF, .
I still have them in the shed if anyone wants them , they are just barely starting to get rust spots on them . I paid the guy $100 to bend them up.
Free to a good home ,just pay the shipping.
Will fit any chevy/gmc with headers . shipping from 74021 ---------bob