Engine

Passenger car and truck oils are formulated to reduce emissions and provide longer drain intervals. This has been done by increasing detergents and reducing anti-wear additives, but your race engine operating under high load and high RPM conditions needs high amounts of anti-wear additives (Zinc and Moly) to create a sacrificial additive coating that prevents metal to metal … [Read more...] about Why use Zink In your Oil?

The carburetor itself has perhaps the most pronounced effect on fuel consumption. Since each carb comes pre-calibrated for a certain cubic inch and RPM range, the best place to start is with the right size carburetor. You can calculate the required CFM using following formula: Theoretical Carburetor CFM = (Engine CID * Maximum RPM) / 3456 This formula assumes 100% volumetric … [Read more...] about How to determine correct Carburetor CFM?

A normal converter has a stall, depending on vehicle, from 900 to 1,200 RPM. As the stall speed increases, the lockup increases, but with normal driving the vehicle will accelerate with small load fairly normally as long as the stall does not exceed 3,000. When max power is called for, the stall will flash to the stall speed before lockup occurs. If a vehicle is doing 30 mph at … [Read more...] about How to choose the correct stall speed for your converter