Dodge SRT Viper Forums : ViperAlley banner

1 - 17 of 17 Posts

·
Premium Member
Joined
·
2,120 Posts
Discussion Starter #1
I was just curious to know from those of you who drag race.. What rpm do you launch at? also, are you dropping the clutch or feathering?? I'm gonna be running a pretty much stock gen I so the figgures I need hopefully will be applicable to my car. First time at the drags this coming weekend. :burn:
Thnx
 

·
Registered
Joined
·
12,999 Posts
i always did 3k and featherd the clutch out....the last thing you want to do is bog down, and if you feather it just right, you will get a good launch. just practice, and see what works best for you, but i found 2800-3k was fine /images/graemlins/gr_driving3.gif
 

·
Premium Member
Joined
·
4,050 Posts
2500-3000 at 17psi BFGs. im gonna try 15psi tonight, should get better 60'
 

·
Registered
Joined
·
1,246 Posts
I have been experimenting at different RPM's. As indicated above, 2800-3200 works well. You should get consistent 1.80's (low). I have been running 12,24 at 118 over and over again. I don't slide the clutch though, I just lift it. Last weekend the track was soo sticky I probably would have gone to 3500 without wheel spin. No power shifting here, just quick shifts.
 

·
Registered
Joined
·
7,340 Posts
A little under 3k works best for me. I made the mistake of "feathering" the clutch a little too much last time I was at the track. Burned the hell out of it!
 

·
Registered
Joined
·
3,601 Posts
3,000-3,500, and use the clutch to control wheelspin. On a STICKY track, you can launch around 3,000 and pretty much dump the clutch. The clutch will usually slip a little and prevent a massive tirespin episode, and you'll be looking at 60' time in the 1.6 range or maybe better, which will easily get you an 11 second run.

The guys that say to launch off idle or at 1,800 and "let the torque carry you through" don't know what they are talking about. The Viper has plenty of torque, but it doesn't have enough to move 3,600lbs from a standstill with available traction and not bog down. The guys that say to launch at 1,800 don't run 11's.
 

·
Premium Member
Joined
·
2,120 Posts
Discussion Starter #8
Just Curious if I dump my clutch at 3k am i gonna be looking for a new clutch soon? I am trying to avoid my local dealer as much as possible as they have a tendency to try and screw you first chance they get :pissed:
Ultimately, how well does the viper clutch hold up to that sort of use?
 

·
Registered
Joined
·
1,246 Posts
Roadkill said:
Just Curious if I dump my clutch at 3k am i gonna be looking for a new clutch soon? I am trying to avoid my local dealer as much as possible as they have a tendency to try and screw you first chance they get :pissed:
Ultimately, how well does the viper clutch hold up to that sort of use?
Road, I have done about 45 runs down the strip. Always dumping at 3000. With the car sticking to the track, you won't feel anything nasty. I too was concerned about snapping half shafts; but I said if they do...big deal, I'll just upgrade to a set of BTR's. The car is much tougher than I thought. The only thing I can say is that "hopping" the car is bad. It makes me whince. :arcade:

Let us know how you make out.
 

·
Registered
Joined
·
3,601 Posts
My 98 GTS had 25k on it, and at LEAST 300+ drag strip runs, most of them dumping the clutch at 3,000RPM.

Never a single problem. It probably didn't hold as tightly at 25k as it did at 2k, but it was actually better for the track. I never broke a 1/2 shaft or broke anything, for that matter.
 

·
Premium Member
Joined
·
2,120 Posts
Discussion Starter #11
Gonna go experiment tonight if i get my brush guard installed (on the truck that is). I'll find a nice quiet street and give it a few goes. Thanks for the advice folks.
 

·
Registered
Joined
·
3,494 Posts
Street tires - 22-24 psi hot and launch around 2600-2800

Drag radials - 15 psi hot and launch 3800, letting out clutch as fast as I can.
 

·
Registered
Joined
·
10,727 Posts
Roadkill said:
Just Curious if I dump my clutch at 3k am i gonna be looking for a new clutch soon? I am trying to avoid my local dealer as much as possible as they have a tendency to try and screw you first chance they get :pissed:
Ultimately, how well does the viper clutch hold up to that sort of use?

Clutch is cake to install, you don't need a dealer to do it...and you can install an aluminum flywheel at the same time...IMO, the clutch is a consumable...like brake pads and tires...
 

·
Premium Member
Joined
·
2,120 Posts
Discussion Starter #14
Snake Bitten said:
Clutch is cake to install, you don't need a dealer to do it...and you can install an aluminum flywheel at the same time...IMO, the clutch is a consumable...like brake pads and tires...
Hee.. I guess i am just used to the Evil Unimog where I had to have the body pulled to replace my clutch bellhousing.. Gonna have to check into Viper clutch replacement procedures ;)
 

·
Premium Member
Joined
·
2,120 Posts
Discussion Starter #16
Hey snake bitten.. what is the deal with the aluminum flywheel? Why is it better? weight savings?? what about durability?
 

·
Registered
Joined
·
10,727 Posts
Definitely lighter, spins the motor up quicker...Durability/Reliability...That is a good question that I would feel better if someone with more experience with them answered...I'll post a new thread...
 
1 - 17 of 17 Posts
Top