Which SBM for the Mopar vehicle

(Am having trouble expressing the question, bare with me please)

When assessing a Mopar project


How do you decide what is sufficient?:

A body cars can be economical with 273/318’s and smaller, with enough acceleration to move in traffic as a daily driver, and with 340, 360 or stroked even faster. So anything seems to work with them, but what about when getting heavier?

But if you are starting with a clean slate rolling chassis

How much engine (torque & hp) would you want to have to safely drive in heavy traffic for:

Some of the B bodies (since size varies)

C bodies

FMJ bodies

Single cab truck -assuming potentially towing a vehicle once or twice

Or larger truck -(assuming potentially towing a vehicle once or twice)

Would you ever tow with a car?


Where I live there are SHORT ramps into a busy express way with semi’s driving 70-90 as you merge into traffic. And freeway crossings where semi’s are driving 60+ while you have to gauge, and sprint in front of them to cross the road.

How much engine size or <hp+torque> would you choose for those vehicles with a small block, and when would you guys switch to a larger engine?

I am not considering racing, just public driving including aggressive big city driving in traffic.

I realize there can be a multitude of purposes within daily driving or street, but create boundaries of what YOU would use any of those Mopar vehicles for.

I know this concept is a messy soup, but thanks anyways!! Your input (wisdom) is most appreciated !!
If your talking how much engine performance (anything above the 20-50 hp needed to move the car) is needed for normal driving, I'd say look at modern family cars there performance is basically what an average consumer demands, seems to be a 14-15 second car. When people are pepping up an old car but say performance ain't overly important, I assume they want a 15 ish second car.

I guess that would make a performance car to be a 13-10 or less second car.