Statistical significance does not provide information about the effect size or the clinical relevance. Because of that, researchers often misinterpret statistically significance as clinical one. On one hand, a large sample size study may have a statistically significant result but a small effect size.
An HEI distributor is an upgrade from a points-type distributor. ... Ford and Plymouth, installed four-cylinder engines in their cars.he increased efficiency of HEI distributors stemmed from the incorporation of the ignition wire into the distributor cap, reducing degradation of the spark and loss of energy potential.
performance distributors also custom tailors the advance mechanism around the needs of the engine the result we have been told is a race legal distributor that can provide a strong spark up to 9000 rpm by comparison a stock hei will have a race engine skipping and starving for power at 6000 rpm to see if the distributor actually makes a difference we traveled to kt engine development in concord north carolina shop owner ken troutman was putting the finishing touches on a perfect dyno mule for our test this limited late model races at a track where the rule book specifies no external box or coil