good luck, I've been watching this thread with interest on the nos and stall effect on launch

 

first race is the 9th the only bad thing is it is steet legals and they dont prep the track so we will c what i can pull. i hope i get to run nitrous but i dont have any good gas.

 

IMO, it would be worth your time & money to simply buy a spare 10-bolt, for when you grenade the one in your car now. It's also much cheaper than a 12-bolt.

I know I'm on borrowed time with mine (especially with all the bearing noise I have) and am planning accordingly for the day/night I tear it up launching NA on drag radials with only 1.9x 60' times. Good luck, but honestly, if you are considering spraying on the launch, you do know your rearend is doomed, right?

 

i will launch on nitrous!!!! i have read about a few guys who are in the tens with a stock 10 bolt.

1.9' do you still have a stock stall??

 

Yes, stock stall, stock rear 3.23's (or whatever GU5 code is for '93), and for the most part, a stock LT1 motor. No shift kit, no chip just yet, and a lot of weight reduction still to do. Stock steel driveshaft, stock torque arm, stock panhard & lca's, but I have some BMR stuff left over from my '95 that is going on there pretty much as soon as I get a chance. I use an air bag in the right rear, at about 15-20psi, and bfg drags at anywhere from 28lbs to 22lbs of air depending on the track conditions.

I launch at about 14-1500 rpm brake-torqued, and manually shift from 1-2 and then 2-3 because it netted me almost .4 quicker times - the tranny wants to shift around 4500rpm vice 5500 when on its own.

 

track is flooding so the race has will not be this weekend.

 

There are always exceptions to the norm. Assuming that your car is one of those exceptions is a recipe for disaster.

It's better to be prepared for it to break and have it hold together than to assume it will hold together and have it break.

 

I really hope you have a driveshaft loop just in case you hook up. Breaking the rear is all about shock on launch. The better you hook and more violent the launch the better the odds that something will break. I have seen 13 second cars break the rear. I broke mine twice until I wised up and installed a 12 bolt. On my car I could get about 400 passes out of a basically stock rear with 3.73s and a TA cover back when it was slower... 1.8 type launches... I have seen guys go much quicker on the stock rear but sooner or later, when it is least expected and least convenient, it will break. It is only a question of "when".

 

My wife sprays out of the hole in her 96 z. 3200 stall 3.73's on a 150 shot. Her current best is 12.1@111 1.67 60' (4500 ft)

 

I'm hoping mine lasts a little longer until I finish the 9" that I haven't been working on.

 

one way to make the 10 bolt last is to drop about 300 lbs or so

 

my best pass (bolt on car) on a track thats 5-60 feet short of a true 8th is 7:86 with a opti that died later the next day. Average times for 60 foot were from 1:80-1:85. I'm running a 305 DR on a stock 16" firebird rim. 3:42's 2600-2800 stall, with tubular control arms and relocation brackets.

heres the link to my posted time
https://www.camaroz28.com/forums/sho...58#post5126258
theres video proof in my sig

 

Seven minutes and eighty six seconds?

Oh, I get it. A 3:42 ratio would really slow you down off the line.



It's 7.86 seconds, and your rear end gear ratio is 3.42:1

 

yeah but wait til this baby hits 88 mph

 

You totally missed Jake's sarcasm.
You didn't run a 7:86, you ran a 7.86.
And you don't have 3:42 gears, you have 3.42:1 gears.