kevinek

Hey guys I got a few questions I hope you can help me with. I have a stock 02 z28,a4,2.73 gears. My first question is what stall would you recommend for a dd with 2.73s. I'm looking for the best 1/4 mile time with drag radials that would still be safe to drive around daily. I would also like to know if my diablo predator tuner will do what I need as far as a tune with a stall goes? I know I can adjust shift point and rev limiters with it,but Im not sure what else a tune shop adjust for a stall. Im leaning toward a 3000-3500 stall hoping that will be mild enough that I can tune it with the diablo and get a complete dyno tune when I do more mods down the road. Thanks alot

FormulaTA327

You might want to get a good trans cooler with the stall, I have a circle d 3000 stall, but I hear alot of DD getting 3200, but thats about $700 compared to $300 for a 3000 stall, I havnt installed it yet so I cant tell you what its like. I also would recommend getting 3.73 rear gears. Stall plus gears would be a good add on. Also if you trans is stock you might end up breaking stuff eventually,Tip for future- be looking for a good trans builder or new aftermarket one or 4L80

FirstYrLS1Z

iTrader: (4)

the higher(lower numerically) the rearend ratio,the 'looser' a stall will feel.
for example,a 3500 stall with 3.73s' would feel like a 4000 stall with 2.73s' and feel like a 3000 stall with 4.56s'. the stall slips more as mechanical advantage of the engine over the vehicle goes down and that more 'slipping' makes the stall feel higher.
also as more slippage occurs,more heat is generated,so a 3500 stall w/2.73s would require a 'bigger,more efficient' fluid cooler than a 3500 stall w/3.73s' would.
a 3500 stall is a good choice for 2.73s',most recommend in the range of 3500-4000.
as far as tuning,every vehicle is different,some need tuning,some don't.

kevinek

Thanks for the reply. You have me second guessing a stall now. I wont have the money for a while to be replacing the tranny. I heard that the 4l60e was junk but I wasnt sure if it was true. I have 58k miles on the car and it shifts fine. Do you think it would just be a grenade tranny if I install a stall? The other route I was considering instead of the stall was 3.42 gears,long tubes and drag radials. Maybe Ill go that route. Im just wanting to get in the 12s.

FormulaTA327

Well a stall is a good gain, I dont think the trans will just give up on you if you stall it. I wouldnt be going to the strip with it alot, and I wouldnt dog it either. My cousin had a 3600 stall in his 01 camaro with a stock trans, it did fine until his flexplate cracked. But what ever you do put a trans cooler on it. Heat murders a transmission. Mine had 80K miles before it started slipping, ur overdrive will go out before the rest of ur gears because its the weakest. Far as tune goes have you thought about a mail or by Frost

kevinek

Thanks,Yeah I definitely plan on running a cooler. I will probably go to the strip about 3-4 times a year with a few red light races also. Ive had stalls on some of my older hot rods without hurting the trans but those were th350s and 400s. I just cant decide what to do here. I know a stall is one of my best bang for the buck mods I can do,but you have me nervous about blowing up the 4l60e now. What to do????

FormulaTA327

If you have another car that runs good just in case something goes goes wrong, I would stall it, 4l60's are built cheap they have plastic parts inside, well at least mine did before I got it rebuilt, so they will eventually break anyways, its just a matter of when. You could always save to get a strong rebuilt trans and still get the converter later or now. My transmission cost $1850 for parts and labor by a local builder. Equelivant to performabuilt lvl 2 trans. It took me about 6 months to save for trans rebuild so you could set some money aside each month for a rebuild.

kevinek

Ill probably just save up and get the transmision built at the same time I do the stall. I say daily driver but actually Ive had the car for about 9 months and put less than 2k miles on it lol. I might just go ahead and get 3.42 gears, drag radials and long tubes and hopefully see 12s with that and save back up and get the tranny built with a stall. Thanks for all your help.

ybaslo1

iTrader: (10)

I have the Yank SS4000 with 3.42 gears, full exhaust/lid, 3710lbs, goes 12.30's and drives perfect. Stock trans with 112K miles. I was going to go with a 3600, but glad my friends talked me out of it. I love the big stall. I actually did have it with a 2.73 gear for a few months, went 12.4's with that gear, but driving around town took it too much to get going, thus why I put a 3.42 gear in it. Just for reference, before the stall it went 13.4's. IMO, if your spending that kind of money, go big or go home. but that's just me. One other suggestion, if your not lowered, get a deep aluminum pan with fins.

ybaslo1

iTrader: (10)

Here are a few quick clips:

On the second one I simulated when lock-up kicks in. On my car I have it set at 45mph. So, that wasn't me letting off.

ULTIMATEORANGESS

iTrader: (4)

a stall is worth it.



yes, eventually youll need to upgrade your trans. i recommend a shift kill as well.

dannyz

I have had my stall for well over 40,000 miles.
On my 3'rd set of drag radials, I think my 25th or 26th bottle of nitrous and still the same 4L60E trans it rolled off of the assembly line with.
Oh, and untill last January I was runing 2.73's.
If your trannys in decent shape you will have no problems with a stall.
And if you stay with a 3000-3200 your stock tune should be just fine.
pm me if I can be of any further help.

kevinek

Thanks guys for all the replies. It definitely makes me feel better to see some of these stock 4l60e are holding up. It makes me feel even better to see you running 12.3s with exhaust,tires and stall. If I can get mid 12s or faster Ill be more than happy. So I guess I'm going to go with a 3200-3800 converter. What brand converters do you guys recommend? Any sponsors on here you recommend with fair pricing?

Gonoma

iTrader: (15)

O man here we go... LOL

Yank

iTrader: (181)

Go at least our SS3600

Circle-D

iTrader: (21)

No help on the capabilities of the Diablo, but we can definitely help with the stall. SWe have numerous options, but our Pro Series Stage I should be a nice fit. With the 2.73s I would suggest about a 3200-3400 for a conservative setup or maybe our 3500-3700 to get a little more aggressive. I would be happy to answer any questions you might have, give me a call at the shop and we can go over the options. You are also very close to us, we are in Houston. Want a tour??

Chris

Circle-D

iTrader: (21)

Oh, and like mentioned. A cooler is highly suggested to extend the life of the trans.

Chris

FormulaTA327

If your wondering what cooler to get B&M # 70264 is probly all you need, it seems to be the most popular one.

farmington

iTrader: (14)

I have a 2800 rpm converter and 3.73's in my 99 convertible. Only other mods are a SSRA air intake and lid with a handheld tune. 12.88@109. Valve covers have never been off the motor. And that time is with street tires and a 2.24 60' time. DR's and a good launch should get me down to 12.50's or so. And a vert weighs 300 pounds more than a hard top. When I changed the gears and converter my city milage went down from 20 to 18.5mpg. Well worth it, I'd say. The gears and converter REALLY woke up the car.

kevinek

All these 1/4 mile times sound great. I notice a lot of you are running these times on tracks no where near sea level. Ill be running at the baytown Texas track which claims to be one of the fastest tracks in the country. So what should I expect to run in my 02 z28 when I finish my mods with long tubes,cat back,tuner,air lid,3800 stall and a good set of drag radials with cool weather right here at sea level? I know there is only one way to know for sure, but just wanting to hear your guesses. Thanks