360 or 440 for my 1970 dart daily driver

rumblefish360 said
I love the small block in an A body. I do have a 400 in a Duster. Power wise, it is good, but I'm not so fond of the handling. It does still have iron heads, the rest is aluminum w/headers.

I would look at a 360 because the 340 is pricey just to obtain. It (360) has a longer stroke for torque and will make very close to the same HP a few hundred RPM's less.
A "RPM" top with a solid built flat top piston and 1-3/4 headers (or TTI's) are an excellent platform.

An overdrive trans is excellent for extra mileage. 4.10's (x .69 OD ratio MoPar ratio) = 2.829 final drive.

I (or we) could suggest a cam later when we know more.

As far as street racing goes, go for it with care. Back road and industrial parks at night. Far far away from the world. That's all I do is street race. There are no tracks close. All those above who trash it have cause but no right to talk down on it or to you in such a manor. I'm sure I'll catch heat for it.
Just use your head.

Well someone was honest lol..... Anyone who is 16 with a hot car can easily end up in a couple of rounds on the street. Make sure to thosethose that want to blast him that they maintain perfect driving techniques at all times with both hands on the wheel.... If not for losing a car to the Po-Po I would still do it.....

A small block will probably fit the bill for ya.... If I was your age again and had someone in my wheelhouse that understood Forced Induction I would have used anything from a 318 to a 360 and slapped a Turbo on it. Not as expensive to do as people think and even a small series turbo will make that car a bullet.... But you need someone who will show you the way with Fabrication and pass the Torch or so to speak....

Love the car OP. Be safe out there and good luck with it.....

JW