Since every car is different when it comes to this, i figured i'd ask for some input. What do you guys think is the highest i can launch at without spinning badlywith my mods, and in warm weather with the stock rubber? I could just practice, but i dont wanna beat my car too much to figure it out. Usually now i launch around 1400 and dont really spin, but its not fast enough it seems

 

It has more to do with how you slip the clutch, than it has to do with RPM. You could launch at 4k if you slipped the clutch BAD(not ideal). You have to go out and see what works best for you. Every surface is gonna be different. What works at a stop light might be way off from what you can do at the track.

Remember, a LITTLE spin is a GOOD thing.

 

I was using 3200 to 3400 on my stock tires with the stang, got low 1.80' 60 with a bolt-on car with stock tires. But he is right you got to ride the clutch.

 

2000rpm....ride the clutch until about 20mph... of course I suck at driving.

 

i launch at 2000-2500 depending on the road where im at.

 

i say 2k also, btu without the clutching part. i find the best way is to get out of the clutch pretty quick. not exactly dropping it, but stilla quick release. i find my best et when i throttle it through first. i run 255/40-17 ch(eap)ampiros. i usually dont go from a dig on the street, btu at the track thats about the best advice i can offer.

 

I don't really know a whole lot about the S197's, but bone stock in my mach on the 245's that came with it I could launch at about 3100 rpm or so without spinning too bad, you just have to be carefull not to dump the clutch too quick the higher you launch..

Come to think of it I'll have to figure all this out again myself when I can finally track the mach with the mods.. lol [&:]

 

Gears make a difference too. I can slip the clutch from 3500 RPM(holding rpm above 2k) and get a 2.0 60ft with my 4.10s. Every car is different and so are drivers. Just practice and try different launches until you find what works best for you and your car.

 

Damn I've rolled it off the line at idle and got a 2.0 60.' I find a 3000 launch with a bit of slip isn't bad for street tires on the street.

 

with my 3.73s i have done about around 2400, i let go of the clutch till bout 5mph then start dumping the clutch and go to flooring it. its been decent to me.