Here is what I have.

78 Warlock, 727, 8 3/4 3.55, mini tubbed, running 295/40/18 on the street. (Have access to 3.91 and 4.56) currently running block hugger headers and 2 1/2 in exhaust all the way out.

1972 400 block (short block assembled and zero decked)
3.90 stroke crank
H beam rods
CP flat tops

Stealth heads (bowl blended and cleaned up)
Comp 26120 beehive springs with retainers and 10 deg locks
Crane gold 1.6 rockers

Leening toward RPM intake, but not married to it,
Carb? I will start with an 850DP I have hanging on the wall.

Cam? My original thought was MP .557 (not looking for aggressive ramp cam) This will be mostly street driven with occasional track days. Now I have been looking into hyd rollers like COMP XR292.

Not sure if I want to step up to hyd roller or stay with a good old solid flat tappet. Looking for pros and cons for each.

I will have a converter built after I see what it will do on a dyno.

Use the Perf RPM intake.

It'll react to cams like a 440. I am thinking for street use you are way too big on the cam.

The biggest cam I'd think would work halfway well would be the (shudder) .509.

I'd go to something smaller in the 236 degrees @ 50 range.

You said mostly street use. That to me means a cam that'll have a decent idle and off-idle acceleration.

Big cams are crutches for bad ports. Your ports will be better than any stock bigblock head, better even than half of the ported bigblock heads out there.

Call Hughes and talk to them. I'd go hydraulic flat-tappet unless you want to go HR and have the bucks for it.

R.

What's the compression ratio?

Of course I forgot to put something.

Should be right about 11 to 1

I'm going to assume you want to make a lot of power with this motor on pump gas,yes? If so you need to open the valves as much as you can and keep them open as long as possible I like and use Comp Cams for both race and pump gas street motors On your deal I would look at using thier XE285HL or the bigger XE295HL hydraulic lifter cams or their solid lifter XS290S cam. If you want to go to a roller lifter cam and lifters look at thier XR292HR hydraullic roller or the XR292R solid roller lifter cam and lifters Keep in mind on the roller cams you need better valve springs, keepers and retainers and a brass oil pump drive gear I have Comp grind me a bunch of custom grind camshafts for my builds, I go big due to knowing the the stock type BB Mopar heads limit the power you can make with our motors so you have to fool the motor to get more air and fuel into it to make more power BTW, 471 C.I. ,3.91 stroke motors, rock Have fun, no matter what

I also like the comp cams XE line, I'd go with the 285, these cams have loads of torque for there size, I ran in the high 10s with the 284h with stock 906 heads.