Ive heard to press the brake half way and rev it up a little bit, but this doesnt feel good for the car. How do you guhys lauch? Just mash the accelerator at green light?

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89 camaro 305 tbi, flomaster 3 chamber cat back, gutted cat, Edlebrock TES Headers, Exhaust cutout, Edlebrock open element, and a 160 degree T-stat. 2 kicker comp 12"'s, polk for the rest. Phoenix gold xs2300 to subs, kicker impulse 404XI to 4 speakers, pioneer DEH- P7000R head unit, and finally a 12 disc changer. Full leather interior from http://www.MrMikes.com (its nice)

 

It's best to bring the rpms up a bit but it depends on your setup. A stock converter doesn't stall much higher than idle, The brakes can only hold the car just so much when you come up on the converter. If you're bracket racing, bringing up the launch rpm needs to be the same every time to get a consistant run. It's hard to do without a 2 step. Even 100 rpm will make a difference in the ET. Carburated engines have the accellerator pump adjusted to give a squirt of fuel just off idle. If you bring up the rpms to launch then you've already given the pump a bit of a squirt. When you go to WOT, the engine will act like it has a lean bog because it didn't get a full shot of fuel from the accellerator pump.

Last race when I was trying the new engine, I didn't want to try playing with anything. I never bothered using the 2 step or see how much I could stall the converter while holding the brakes. I just launched from an idle.

The only way to tell what works best for your car is to go and do some track testing.

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Follow my racing progress on Stephen's racing page
and check out the race car

87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block

Best ET on a time slip: 11.242 altitude corrected to 10.69
Best MPH on a time slip: 121.52 altitude corrected to 127.76
Altitude corrected rear wheel HP based on power to weight ratio: 504.5
Best 60 foot: 1.546

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley

[This message has been edited by Stephen 87 IROC (edited May 08, 2001).]

 

Stephen is right about going out and testing, and for god's sake remember how you did it. One time I had a near perfect launch (I could feel all the suspenison shift), I've been trying, but can't do it again.

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late model 91 rs
fully loaded t-tops
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paint- gm red and yellow blend (light red)
custom pink rims
305 tbi k&n,computer chip
MTX sub and amp (very loud)
vic_v8@yahoo.com