Y2K SS

iTrader: (1)

K guys I just ordered my 4.10's yesterday and plan on throwing them in my stock 10 bolt. Anyone out there with that setup....how are you launching????

ChiTownSS

I'm launching at a measly 2500 w/10 bolt, 4.10's, & BFG comp TA's. I don't have the money to buy a new rear if it goes, so I baby it. Only good for a 2.0 60ft

Race Car Driver

You will break it.

gator's 99TA

iTrader: (2)

it might or might not break right away, but it will soon. save up for a moser or other aftermarket rearend. 12 bolt or 9" only

Y2K SS

iTrader: (1)

Both say I'll brake it. If I race it with the stock gears... sooner or later that will break too. Oh well too late now. It's in the mail.

30th t/a

iTrader: (51)

hold it at 4500rpm and FEATHER THE CLUTCH OUT!!! .....DO NOT DUMP THE CLUTCH. i pulled alot of high 1.7s on bfg drag radials. my best is a 1.76 i believe. i got the guinine GM gears, a solid cruch sleeve and a T/A girdle. my rearend is not making any noise either.

ChiTownSS

Yeah, something has to take the stress of the hook (assuming you DO hook), so it's either the rearend or the clutch. If you ease out of the clutch (slipping it), there will be less stress on your rear.

You could also just launch (if you can even call it a "launch" lol) at 1500-2000 rpms. This will assure that you aren't too tough on the 10 bolt, but obviously won't yield you the greatest 60ft times.

Like I said, I have had good luck launching 2200-2500 rpms while easing out of the clutch and slowly giving it gas till it hooks. I wish I just had the damn money for a rearend because I'd be launching upwards of 6,000 on a sticky! One day...one day

Y2K SS

iTrader: (1)

You know whats funny is thats exactly how I've been practicing on the street late at night. But I'm sure its gonna be way different with the 4.10s.

02SOMWS6

iTrader: (6)

Dont forget the stock axels are ****. I snapped one in half trying to back up a 1.64 60ft.

M6HuggerSS

ill tell ya.... ive had 4:10's for ever.... nothing broken.
but ive never launched HARD..... after the H/C ive beeb even more cautious...
thou after i did the TQarm and rear sway the rear feals alot more solid at take off....

so now ive learned how to take off on street tires... for me the fastest off the line is to quickly slip the clutch at 2500rpm (not drop)... its spins, till redline, then bang 2nd
and it hooks ok.... the sus. helps.

i am not brave enough to try DR's but i may in the furture....

oh, and im still running the stock clutch, and ill i have in the rear are the gears, and a mac cover.....

good luck!

ss2000

iTrader: (45)

i've got gm 4.10's with a ta girdle and ive been pulling 1.6xx sixty's on et streets. i launch like 30th t/a says, 4000-4500 and feather the clutch. i don't know how long it will last, but the last few times at the track were fun.

BlueSix

It's the wheel hop that ends up killing the rears. if you feel it hopping, or spinning a lot, get out of the gas. It's better to abort one run then kill your rear.

Y2K SS

iTrader: (1)

I got relocation brackets and since then I have never had any wheel hop so hopefully that will make hold on for just a lil longer.

CAT3

iTrader: (9)

****, I want to swap gears in my A4 car, but scared to blow the R&P out, I do launch hard but nothing like a clutch dump would be. Just a measley 175shot, 3,000 rpm TC, but swapping to 250shot and 3800stall...Think 4.10 would take that with DR?

Y2K SS

iTrader: (1)

Hey Cat... you're Andrews friend huh that was helping him with his tuning. Well tried to anyway. I think I'm gonna go out to the track next week saturday or something. Gonna give him a call. I live right up the road from him.

CAT3

iTrader: (9)

Yep, that was me, we were attempting the cam for Scoobie. His PCM is good to go now.

TARA02

I'm nervous about going back to the track since we put the cam in. But I'm not running drags, and I'm only launching (well, the time I ran) at about 2300 rpms. I did dump the clutch though. That day, I didn't do the burnout (avoided the water like the plague). Spun somewhat, but everything in her is still stock. Gears, clutch, everything now but the cam & mods you see on my siggie. Probably will still launch in the 2's to try and spare my rear! Just biding my time!

GuitsBoy

iTrader: (4)

Mine hasnt broken with a lot of street tire launches. Feathering is key, but instead of feathering at 4500 RPM, i start feathering at 2 - 2.5K and gently roll on the throttle as i let out the clutch. No bog, hard launch - for street tires anyway.

MW2 Performance

At LACR in southern CA in my 95 z(sold) with 4.10's and a spec stage 3 on street tires i would just power brake it(yes it was an m6), i'd 2 foot it and I would run 1.9 60's all day long (literally 27 runs in 1 day nothing broke!!!!) had the clutch out jsut enough to put load on the rear at about 3k so it wouldn't just bee sudden, seems like the weight transfer was awesome and it worked well. you dont even have to power brake it just let the clutch barely engage(not enough to move the car) and it should be find unless you have a great clutch. Have fun.

Y2K SS

iTrader: (1)

Did you guys ever get that cam chnaged???