From a roll, autos are just fine. It's off the line that they tend to be slow, since the auto tranny doesn't shift as efficiently as a good driver in a manual car. The driveline loss in the lower end hurts as well.
If you want to increase your top end, make it breathe better. Your motor and transmission are made to have the powerband within a certain RPM range, so you don't need to rev much higher (I wouldn't want to with stock internals anyway!) Still, as you go faster and rev to the higher areas of your RPM range, your car will have some breathing issues. It can only make power with the air it can pump through... so, free up some airflow and you'll see gains!
A good intake, headers, and a free flowing exhaust system (mandrel bends, and as few as you can do... nothing fancy) will definitely help. If you go the supercharger route (probably your best bet) those mods will still be useful.
You might also want to check out Level10 (google em) to beef up that auto tranny of yours. If you do some performance mods to the auto, you'll be more on par with the manual guys. Unless you have a heavily modified automatic tranny, a similar car with a manual transmission will ALWAYS be better (assuming the driver is competent... I've beaten plenty of cars that outclassed me simply because the drivers sucked... and I'm not that great either!)
If you want to increase your top end, make it breathe better. Your motor and transmission are made to have the powerband within a certain RPM range, so you don't need to rev much higher (I wouldn't want to with stock internals anyway!) Still, as you go faster and rev to the higher areas of your RPM range, your car will have some breathing issues. It can only make power with the air it can pump through... so, free up some airflow and you'll see gains!
A good intake, headers, and a free flowing exhaust system (mandrel bends, and as few as you can do... nothing fancy) will definitely help. If you go the supercharger route (probably your best bet) those mods will still be useful.
You might also want to check out Level10 (google em) to beef up that auto tranny of yours. If you do some performance mods to the auto, you'll be more on par with the manual guys. Unless you have a heavily modified automatic tranny, a similar car with a manual transmission will ALWAYS be better (assuming the driver is competent... I've beaten plenty of cars that outclassed me simply because the drivers sucked... and I'm not that great either!)
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