340 A body versus 383 B body

Don't take these 60’s drag test as gospel. These test cars were brand new with a few hundred miles, tight engines and rear ends with bias ply tires. Lots of rolling resistance.

The 205 radials, modern cam, ported heads make a big difference on the 318. And so does the density altitude and water grains. Anyone who races k
already knows this. The magazines seldom talk about what track and what the weather was that day.

the early cars were made in august and if they were drag testing in august or September the air could be bad for making power.