pat

What is a s step? is it something you do when your going to launch?

92hatchLX

I forget exactly what it is, but it's like a rev limiter for your launch, and it sounds bad *** when it kicks in.

pat

Yeah theres this guy on the Hardcore50 forums that has a hollysystemax intake, TW heads, hi rev clutch, after market trans,off the shelf cam thats doing 10.8 in the 1/4 with a n/a 302.he doesnt want to tell anyone what the cam specs are and he was saying he was launching at around 5 grand with a 1.44 60ft and he said something about a 2 step so i want to know what that is[>:]

15austin

I believe a 2-step revlimiter is first stepyou can set it to say 5000rpm for launches as soon as the first step is hit, it kickes to the second automatically, and the second step would be set for your shifting. It would be mainly for consistant launchesso every launch is 5000rpm.

luckythirteen13

let me explain since no one has got it right yet.

a two step is used for automatic cars with a trans brake when launching. lets say a car has a converter stall speed of 4000rpms. after the burn out the car rolls to the light. when both cars stage, the car with the 2 step presses his trans brake which also turns on the 2 step. the 2 step is usually set around 500rpms below the converter speed. so when the button is pressed the driver floors it. the motor wont move because its on the trans brake. the rpms will quickly jump to 3500 and then the rev limiter will slow it down. the motor will bounce of the rev limiter (3500) as long as the button is held. when the light turns green (or just before) the driver releases the trans brake and the car is free to move and the motor is free to rev all the way up. basically allows you to launch your car at wot and all you have to do is release a button.

i have a 2 step on my car for my new combo. should be fun

Joel5.0

A 2-step is not exclussive to auto tranny cars with a transbrake.....you could also set it in a manual tranny setup with a line-lock, activate it with a push button while clutch pedal is down, and release line-lock & 1st. step rev-limiter when you let go the clutch pedal......check the information at http://www.msdignition.com/rpm_6.htm

luckythirteen13

i know i just didnt feel like typing out every possible way to hook a 2 step. my tranny builder recommends having a 3 step[8D] normal rpm limiter, one for trans brake and one for line lock. 2 is good enough for me

pat

So im guessing its not a good idea to have it on a stock tranny huh.

luckythirteen13

depends on what your using it for. if your using the 2 step with your line lock then its a good thing to have because it will keep you from over reving the motor when your doing your burnout. if you have an aod, youll need a transbrake vavle body to use a 2 step for launch. if you have a manual you could set up the 2 stage to be active when the clutch is pushed in that way you can set the rpms to whatever you want to launch at and hold the throttle wide open and youll always launch at what the rpm is set to.

long story short, depends on how you use it

tinman

BUT,
If you are using a C4 you could wire it thru the brake lite switch and use the low RPM adjustable mod that MSD makes and launch off the 2 step without a trans brake.
I do.
Also lotsa NHRA stockers do this too..........