.Many racing transmission manufacturers make their competition valve bodies with one or more forward gears having  NO ENGINE BRAKING !  What does this mean?  If you wish to slow your car down, you put your foot on the brake pedal and apply enough pressure to slow the vehicle down.  If you had an emergency stop necessary and you were driving a car with standard transmission, you might in addition to applying your brakes put your car into a lower gear and let out the clutch which would engage the transmission directly to the motor.  At this point, the rear wheels begin to try to turn the engine, but due to the compression in the engine it resists the action of the rear wheels and would help to slow the car down.  Thus you have Compression Engine Braking.  If you were to push in the clutch, you would no longer have compression engine braking, instead you would have No Compression Engine Braking or in short you would have No Engine Braking.  Automatic transmissions also can have engine braking or no engine braking in certain gears. 

Many Turbo Action valve bodies have No Engine Braking  in first gear.  This in many cases improves E.T. and also prevents oil pan damage if you do dry hops after your burnouts. Note we do not recommend dry hop burnouts!  We also make some Turbo Hydro 350 and 400's that have no engine braking in second gear in addition to first gear.