when does a guy know when its time to change gearing? say a guy had a stk ds and then put say a 720 kit in he is going to gain a lot more torque right.? just big bore nothing else. so his curve is the same on the dyno but just more. then how far up on gearing should he go?

confused?

well lets say if you had a stage 2 and on gas a 15-40 gearning works good right. So then he puts in alky. should he go up to a 16 tooth. or a 16-42 gearing. in sand.

 

what im trying to say is i found some more torque and wondered if i should gear up a little? for sand drags on flats.

 

The more torque your motor puts out the less gear you have to run. The only reason to run gears is to give the motor an advantage and keep it at perfect torque. The flatter the torque curve the better. The less gears you have to change the better since shifting takes time.

 

so i should gear up a little. my curve is very flat. i just dynoed it.

 

If this is a drag race deal and you are after every ounce of speed, then yes, you need to gear up some. This is contingent upon if the gearing was perfect before. The only way to know for sure is to race it and then change the gearing and see if you are quicker.