Can some of you foot brake or flash guys explain how you launch so you don't spin like hell on the hit,Especially cars with street tires and a lot of power, I am trying to apply some different techniques to mud racing to get some forward motion in first gear,thankx

Here is how I used to launch a car on street tires that would spin if you nailed it at the line. I just power brake the car as much as it will take without moving and then just release the brake when you launch and dont move the gas until you start to move. Then ease the gas pedal down. It may take a few tries to nail it as the trick is give it as much gas as it will take without spinning the tires. Ron

Thankx for the info, we cant power brake very high maybe 2k before the truck rolls, It seems that we get no forward motion @ all in first gear and launch on the 1-2 shift around 2/10 of a sec into the pass,We flash @ 5300 and hit hard, some of the street trucks have traction control and run a lot faster than similar powered & weight trucks, sometimes close to a second faster, so it seems like there is something to be had there

talk to some of the FAST guys. step up to a dig 7 ignition control.

Good point Quick, it seems Like everyone in my class has gone to a glide & brake with some kinda delay gizmo and have picked up on launch, I am the black sheep mopar who kicked their butt in the past so they don't share info very well, especially the fords

I notice you mention "Truck". Weight bias in a pickup is not good, as almost no weight is over the rear end, so it will be tougher to get it to launch than with a car.
If you have a vacuum secondary carb (which you should have with a truck and an automatic), try playing with the secondary springs. You can adjust the secondarys to come on slower, thus softening the hit at the line.
Good luck.

I always soften mine up with the converter.

The quickest 60ft converter is never the best bracket converter IMO.

It is a 108 wheel base toyota 4x4 @ 3200 lbs, the weight is 70/30 with as much weight moved aft as possible, basically a 4 wheel drive lawn dart, If I stay in super stock I cant modify the fire wall to set back the engine witch it really needs, we hit hard enough to lift the front wheels around 4" for the first 30 or so ft, if it doesn't lift its so light you have no steering control till around 50 ft out, If you are not running straight on the launch its like playing billiards with the guardrail,, hitting the rail is not as bad as drag racing cause the tires act like big bumpers so the sheet metal doesn't get hurt, just tares up the outer lugs on the tires, A softer launch with better traction makes a lot more sense than the way I am doing it now for safety reasons but not sure about ET, the 2500 hp and up rails use a slipping clutch system that works good and the trucks like mine have all gone t brake with some kind of power limiting device 2 or 3 step on the msd, I have tried slower launches with less pedal and have always ran slower ET and very inconsistent