We put a used 340 cam, with worn 360 heads (valve guides were shot, but cut .045) and a cast intake and TQ on a 318. STock 727 and converter, 3.21's. It was a "no budget" build... LOL. Cast intake and carb was 10 bucks, free cam, 30 dollar heads and paid to cut them, did the valves ourselves hand lapping and a flashlight. Ran 14.40 at 96 mph. No, not a land rocket, but enough to run with any stock 340 car and faster than a ton of "muscle cars" from the era.