318 2bbl manifold swap with OE cam - worth it?

I put an LD4B and a Holley 670 CFM Street Avenger on my '71 318. It made a HUGE difference in the car. I never took it to the track before or after, but it sure made driving the car a lot more fun.

Mine has been converted to electronic ignition though. Accurate timing is worth a lot of power.

I would leak it down before you do anything. Even low mileage, these motors are OLD. It'll give you an idea of how much of your performance is from Chrysler and how much is from age.

Leak down on mine wasn't great. A couple of cylinders were very high, but the carb and intake still made a big improvement in the car.