It’s no secret that we are fans of nitrous oxide around here – we love it for street-driven cars because when the system is turned off, the engine isn’t under any additional stress like it would be with a forced induction setup, and when it comes to bang-for the buck, it’s hard to beat. Don’t get greedy, and there’s really no better way to pump up a street car by 150 or so horsepower in an afternoon.
Nitrous drag racers, on the other hand, are a strange breed. Multiple stages, progressive controllers, and the ever-present threat of burned pistons and the dreaded nitrous “sneeze” all set them on a different level from naturally aspirated, blown, or turbo competitors. We have a lot of respect for guys who choose to employ the bottle at the track, and this video gives a little glimpse into the violence at their command.
Sitting atop Worldwide Racing’s chassis dyno, this big-block-powered 1972 Corvette shows us how it’s done. First, the revs soar momentarily as the driver purges the nitrous system through the engine, shooting blue flame from the headers, and then we get to see the plume of nitrous oxide as he activates the external purge to make a final tweak to the bottle pressure.
With all systems go, the ‘Vette strains against its restraints as it furiously sweeps through the tach, throwing enough exhaust out the side pipes to blow open a closed tool case against the wall.
With the pull complete, the car settles back down on its suspension and the dyno roller is given a rest. Would you have the cast-iron balls required to drive a car like this down the 1320?