I have the LT4 conversion and had a problem keeping the hotcam in it's powerband off the launch at the track with street tires.....Problem solved.
Put your car in 2nd gear, and launch somewhere between 3500-4000 rpms. closer to 3500 you bog, closer to 4000 you spin, but you are moving forward instead of setting still and you stay in the powerband, + it's one less shift.
BTW, I have 3.73s

I haven't tried it at the track yet, but I tried it on the county roads and it worked pretty good, you might have to adjust the rpms around a little bit.

 

hmmm. never tried it before.is this hard on motor and trans? car is kinda old 125K, i might go try it

 

I wouldn't try that.. It's fine on the street.. but your tires are going to hook a tad bit better on that track.. WOuldn't be surprised to see that Spec take a **** as well.. w/ that kinda load...

 

If you enjoy replacing clutches,go for it.

 

yea i didnt think it would be good.... i think the motor would just bog down. hey i just got my clutch anyway dont want to burn it up already.

 

Will be VERY hard on the clutch at the track no matter who's clutch it is.

 

I did a 2nd gear start with my 4.10's a couple weeks ago...

dumped the clutch at 4k rpms and it didnt like it at all !!!

Lets just say I am happy it still grips..........

BAD BAD BAD

 

How is it ok on the clutch when you use dr's and launch high in 1st then, I don't understand.

 

its a numerically higher gear for 1st.. its the equiv of trying to take off in 3rd gear on a steep hill w/ a bicycle.. Would your leg's like that?

 

ok, I kind of get what you are saying now.

Anybody have any tips on how to launch with the hotcam??

I'm really starting to not like the hotcam that much since it doesn't really make much power until around 3k rpms

 

I found dumping the clutch in first at 5500rpm works well at the track of coarse. hehe

Rob.

 

yea what he said.. It really depends on the track,tires, gear,etc your car launches diff than his, mine and everyone elses.. Start high and work your way down.. just make sure your drivetrain is upto the task... Or BOOM!@!@!

 

I'm on Dayton Z Rated 275/40/17 tires and I was launching a little above 3k @ 25 psi in the tires and spinning kinda bad out of the hole, but if I went lower than I was out of the powerband.

 

Id say get some DR"s.. and go from there.. Street tires are going to be in consistant on the track.. Dumping clutches on street tires only amounts to one thing.. worn out tires!!!

 

I don't really like the thought of putting DR's on my car for a couple of reasons:

1. DR's + 140k mile rear end = not good
2. DR's + wheels to mount them on = $$$ that needs to be spent on getting my car lined out.



If I am spinning at 3k, how would dumping the clutch at 5500 be any better??