building a mild Daily driver 318

Here's something to think about in this dilemma
Say you build two zero deck,30 over short blocks;a 318 and a 360.Say you put identical heads on them that end up at a total chamber volume(heads,eyebrows, and gaskets) of exactly 79cc, and then install the same mild street cam of about [email protected],which might be a 276/284/110 cam in each, installed at 108*.
This is how it stacks up;
The 322.84; swept of 661.3, total chamber of 79. The Scr is 9.37, and the Dcr is 7.37
The 365.32 swept of 748.3, total chamber of 79. The Scr is 10.47, and the Dcr is 8.25

From this it can be seen that for the exact same money spent, you are getting 42.5 more cubes, and .88 more Dcr.
The teener will have to run iron heads to keep the heat in. The 360 could run aluminum and give up it's Dcr advantage.
In any case the 360 will have way more torque and especially more low-end torque.This means the 360 can run less gear and less TC; perhaps as much as 15%. That means the 318 will need 4.10s(more money) to launch like the 360 with 3.55s. The teener might need 15% or more TC. That means at least 400 rpm higher(again more money).

Now the upshot to this is that the 360 will be cruising (60mph) at around 2650 to the teeners 3060. And the upshot to that is the teener is burning more fuel to go the same distance, creating more vibration and noise, and wearing out it's guts at a much faster rate.
So it costs the same (actually the 360 pistons might be cheaper) to build the engines, but the teener needs gears and a TC for similar street performance, and will burn more fuel for the entire duration of it's life. So the teener ends up costing significantly more, over it's lifetime.

I offer this, not to knock the teener. It's just a simple comparo, and is meant to show just the low speed equivalent dollar to performance, where a street engine spends a huge amount of it's life.
Either one of these engines should smoke the tires all the way through first gear, with any 15" street tire you can fit into your stock Dart wheelwells.The teener will be going 51@6400, while the 360 will be going 59@6400; exclusive of TC slip.