So the snail won the drag race...

Hey guys back again with this demonic Dart. 4 door all original car, 37,000 miles, bone stock featuring the 225, 904, 2.71:1 rear combo.

Let me start out by saying its slow. Not the kind of slow you get when your fingers are drenched in tar and you want to text your grandma, but slow as in molasses in alaska in january kind of slow. And the best part? MPG's kinda suck too. Step on the gas, and you're greeted by...nothing but the gas gauge dropping.I currently get about 19 mpg. Doesn't matter if i drive it in the city traffic, idle in a parade, cruise the highway, or pray to jesus, it gets 19.

I've rebuilt the Holley 1945 so many times I know it by heart. Every passage cleaned, gaskets matched to the tiniest pin holes, screws tight but not ape-**** tight, done.
Came with a 61 jet. So lean it died if you looked at it wrong.
Tried a 64. Better, but leaned out so bad on the highway it was ridiculous.
Currently at a ... 66! And it still feels lean. I don't have access to a wideband to know for sure.

Accelerator pump works very well and shoots a nice healthy stream of go juice with every stroke. Gas doesn't drip when it's parked, gnomes don't steal my gas when I'm sleeping, and the lines and tank are solid. I'm out of ideas for the carb. Drill out the idle transfer slot a bit to richen the mixture without the accelerator pump for take off maybe?

Other than that, timing is set to 18* BTDC. High as the dizzy will let me take it.

Newer plugs, wires, cap, rotor. New tires properly inflated. All fluids changed religiously. Only guess I have for lack of power is bad vacuum advance unit, unless someone smarter than me has a suggestion.

But really, 19mpg AND the ability to give the tortise a gold medal in a race?

I'm not interested in dropping in a 318. All original car that's unmolested...gotta be an unwritten rule against that somewhere. Low mileage engine too. I run 93 octane gas and drive 55-60 on the highway too if that helps.