Advantage of 2 Step on Stocker???
 

What is the reason for so many auto stocker leaving off the 2 step?

Also, I'd think it would be quite hard on a cast crank, am I right?

Re: Advantage of 2 Step on Stocker???
 

So consisitency is the main reason, ok thanks

Re: Advantage of 2 Step on Stocker???
 

The two step allows you to concentrate on the christmas tree and not on the tachometer. In turn more consistant launches and better reaction times.

Re: Advantage of 2 Step on Stocker???
 

As for the cast crank "problem", both my Mustang 302 Stocker, and my FE428 Fairmont bracket car, have 4 speeds, and 2 steps, as well as cast cranks. The launch RPM for both cars is between 5600- 6400 RPM, on the 2 step, both cranks are still doing fine. The OE 40+ year old crank in the 428 has been in this car for 14 years now, running 10.0`s @132. I don`t know if there is a relation to the 2 step, but I did just tear the 428 down, and although the bearing surfaces still look great after 3 seasons, most of the bearings have lost their tight fit into the caps. They slipped out quite easily.

Re: Advantage of 2 Step on Stocker???
 

Any thoughts on using a two step on a long 6 cylinder crank?I wanted to go to one when I first started running stock but a voice in my head (Jeez I'm starting to sound like Billy now) said no no.Anyone with direct knowledge on this not speculation?

Re: Advantage of 2 Step on Stocker???
 

I thought the reason to use a two-step on a stocker was to give the guys who don't use one something to bitch about.

Re: Advantage of 2 Step on Stocker???
 

I have used one on my 390 stocker for a long time.....because you don't have to watch the tach. usually have the chip set at 3400 and brake line pressure at 1000 to 1100 psi, put the throttle on the floor and let the brake pedal off on the last yellow, and redlight by .005 or have a .520-30 light.

Did break a cam bolt one time, and did notice some fretting on the crank sprocket. Bought a fluid damper and have not had any problems since.

you would be surprised what you can do with brake line pressure.......;)

Re: Advantage of 2 Step on Stocker???
 

consistancey ,,,,like mentioned you you dont have to worry about rpm leave ,,also the inconsistancey of the accelerator pump circuit during hot and cold temps ,,but making the change from foot braker (brake gas)to a two step off the brake can be a huge learning curve,,there many factors holding the car at the line (my car will hold comfortably at 850 psi)but its easy to put way to much brake in to holding the car ,this will affect reaction time ,,its real easy to go red,,, but certainly the rush of the engine chattering at 3600-4000 and letting off the foot brake and have the engine to go full throttle is a sound that is music to any racer loves to hear ,,,not pro stock but its as close as i will get
gmonde

Re: Advantage of 2 Step on Stocker???
 

I'm pretty sure this won't get mentioned unless I do it, but on an automatic turbo car, a 2 step is a necessity.
As you stall up the converter, the boost comes in, so then the stall speed increases, then more boost and so on ,until the brakes no longer hold . The 2 step caps off that process at a predetermined point, in my case ,about 3800 rpm.

Re: Advantage of 2 Step on Stocker???
 

does it hurt to go low rpm like 1200-2000rpm?