launch tecnique for 4-spd

[rick.d]

I need tips on a launch tecnique for a 4 -spd car. This is what i got. 70 Charger, 383 bored .040 KB Domed pistons, Muscle Motors street killer heads w 2.14 Intakes, CC 268 XE .477/.480 cam. Edelbrock performer RPM intake, # 3310 holley 750, # 69 jets with stock Magnum exhaust manifolds into a 2.5" TTI with Flowmaster 40"s. Rear is 3.23 SG. Tires are 275/50/15 BFG. I also have a Centerforce clutch and PP assy. What tire psi would you use, and launch rpm? . What would a respectable E.T . be/speed assuming i can gat a good 60 ft. time be?? Thanks.

[mauve66]

rpm 5500, side step clutch, if the tires spin then get wider and stickier tires

[BROCK]

You could try loading up the chassis before sidestepping if it spins.

[charger_fan_4ever]

First things first if your going to race it get some slicks on there. I wouldn't go taller than 26 inch. Forget the drag radials with a stick car go right to a bias ply slick.

Then bring it to the limiter and side step the clutch.

[mauve66]

hopefully the u-joints are up to snuff......................................................

[471_Magnum]

Unless you're looking to just break shit, forget what everyone just told you. 

First you need to understand that something in the driveline needs the ability to slip. Putting slicks on a stick car with a stout clutch and side stepping is a recipe for disaster. You'll either get nasty wheel hop, or mechanical failure or both.

Trick to launching a stick car is having a controlled level of slip, either in the tires, or the clutch.

With the slimey BFG T/As, you will probably find the best technique is to modulate the throttle and clutch out of the hole, then WFO through the gears. It's not particularly flashy, but it's effective.

Another aspect is tuning. Tuning carb and timing on a stick car is a bit trickier than an auto. You've got to avoid bogs. With an auto, you've pretty much just got to get it to the floor once, where as a stick you tend to throttle it a bit through the gears. That's another lesson in itself.

[471_Magnum]

Oh yeah... GET A DRIVE SHAFT LOOP!

It's required if running slicks, and just plain smart if you're going to make a habit of racing.

[mauve66]

if the front wheels aren't in the air then you need more traction

[charger_fan_4ever]

if the front wheels aren't in the air then you need more traction

Exactly

Been racing for 5 years in another brand car
Last thing you want is less traction or slipping.

Noway you will get a stick car to 60 foot in the sub 2.0 sec range on a street radial.
60 foot times greater than 1.6-1.7 =
Unless you have sticky tires drag racing is just pounding on the car for nothing cause you will be disappointed in times. If your worried about breaking parts keep it on the show field. Drag racing is a crap shoot you might break and you might not. Thats why my charger won't see any track time. I have a small block mustang  screamer for racing.

Only time I have seen a car wheel hop with slicks is if they have 500 hp at the tires and a poorly set up suspension.

[six-tee-nine]

I'm not a horsepower guru but if you are about to put alot of horses on a drive train you'll gonna need more than a good clutch and some sticky tires.
A Dana 60 will be on your list, along with some good universal joints and a strong drive shaft with a loop around it.

A 8 3/4 rear will snap eventually with slick tires...