meeklay812

I am VERY close to buying a 355 to swap in for my L03. My only concern about the engine is the cam/stall converter......The guy says the cam is pretty lopey, but is fine for the street and says to get a 3200 stall. This is an everyday car and am wondering if a 3200 stall would be DECENT for street driving?

level

i have a 2800rpm stall.. i don't know how tight you can get a 3200rpm stall but even the 2800rpm is pretty loose i mean passsing someone at 3500k when the other guy is barely on it is sort of embarrasing...

Apeiron

If you get a 9" converter instead of an 11" it will tighten it up quite a bit.

LilJayV10

iTrader: (5)

3000-3200 is about the limit for most people for street convertors, as mentioned, depending on what transmission you have, you can get a 9.5in for a 700R4, ACT, Yank, Vig, Edge or a 10in for a TH350, contenintal. All these convertors are very tight and will mulitply tourqe better than any high stalled 12 or 11 inch convertor. With that much stall, you definately need a smaller convertor because it's more effiencent and is going to feel better when it engages.

meeklay812

So if i got a 9" 3000, it would be good for my 700r4 with the engine having 350+ hp?? Thanks for all the help!

V6camaroman

level what do u mean the conveter will be loose. im sry im still learning torque converters. basically all i know is for example a 2500 stall converter will allow u to brake stall ur car to 2500rpm before the tires break loose so u can launch at a more optimal rpm for those of u with cams? what do u mean loose or tight though?

Apeiron

That's not the best definition of stall speed, lots of cars can produce enough torque to overcome the rear brakes before the converter reaches stall speed. The stall speed is the highest speed the engine can reach with the transmission shaft held stationary.

There's also "flash speed", which is the speed the engine "flashes" up to when you hit the gas from idle. The flash speed will vary with the output of the engine, weight of the car, and gearing.

Smaller converters are "tighter" than larger ones. This means that while the stall speed may be the same, the smaller converter will slip less below stall speed. Driving a "loose" converter, engine speed will flash up with small throttle movements, which gets tiresome when you're cruising below stall with the TCC unlocked. A tighter converter will feel "more connected" to the transmission.

meeklay812

Alright but anyway back to the main topic, if i got a 9" 3000-3200 would it be good for everyday street driving??

Apeiron

Probably, if you had the cam for it.

LilJayV10

iTrader: (5)

stall speed is based off of .050 cam stats, not the other way around.

level

yeah like the other guy said a loose converter will make driving slowly a pain in the ***.. when you blip the throttle you can rev your engine like its in neutral if you're below stall speed..

and if you get a 3200rpm stall thats loose that means your going to have to spin your motor to 3200rpm to go anywhere really

25THRSS

BS, my vigilante 3200 will start to move just over 1000 rpm. You won't reach full stall speed until you mash it. It is perfectly streetable for an everyday driver.

LilJayV10

iTrader: (5)

I have a 2800 ACT, and you can't tell it's there untill you smack the gas, that's the great thing about good convertors. They aren't sloppy like big convertors.

Wishmaster's87IROC

iTrader: (4)

What do you mean by your statement? if you had the right cam?


And also, LEVEL what do you mean that when you try and pass someone at 3500..whats so embarassing?


Im attempting to get a converter, well have been for the last couple of months...getting close though!...roundng up the money.
Most converter companies tell me to get a 3000 stall.......is it because I have an LT1 cam in my car and they make power up top? My peak torque accoding to my dyno sheet is around 3300.....would a 2800 stall be better?

Verviticas

You should match your cam to your converter means that if you peak torque occurs at X rpm then you should have a stall speed of so and so. There are various charts and graphs for this if you look around, I dont have any sorry. I think its like ur stall should be 800 less or something.

Its embarressing to have a high stall cause you have to rev ur car like a honda or it just wont go any faster. So if he were crusing at 1600 rpm. and both of you were going 40. You have to rev way up to like double the rpm before you go ANY faster. makes it sould like ur car has no power. Even tho you'll probably line his windsheild in rubber if you dragged from a stop.


im too lazy to read u last question. sorry.

kd5boc

No offense to any of you guys...but I'm sure that there are some of you out there....

There is NOTHING like the sound of a high stalled big-block driving from a stop...that constant rpm sound...of course coming from a background with a father that used to build them...I guess it's just one of those things...

So what if you have to rev up to get it going...that just means that your are at your peak already when the other guy is still accellerating to get there.

LOL

Tom

TunedPort 335

I just put in my new tranny with a 3000 stall 9" converter. It brake stalls at around 2500 rpm. It's pretty violent though! Probably one of the best mods you can do to your car.

Although I will have to get used to driving around at higher rpm's now, it makes alot more noise

Abubaca

iTrader: (3)

I think it's important to remember that every individual person has a different idea of what "street" driving means.

I have a friend who drag races, and this is what he told me when I asked about TC's. If you're setting your car up to be as fast as possible, someone who know's there stuff can look at your specs and accurately help you decide what TC is best. If you're looking for a good street TC, then you'd better learn how they work, and what the numbers mean before you ask ANYONE what is best.

The point is, some people will sacrifice quite a bit of E.T./performance in the name of a good driving weekend driver. Other's won't. It's all up to how you like your car to feel....and unless you have some understanding of what the numbers mean, no one will be able to accurately tell you what to buy.

For the record, IMHO, 2800 is the highest I'd want in my car, which is mostly a regular, but not daily driver. I'm actually looking at about 2200-2500, for when I make my purchase!

...and Vigilante will recal. the stall speed for free, assuming you have the same motor, correct? ...so I'd go too low, before I went too high.

RaMaiRGoD69

What I believe is if you go with vigilante it is hard to go wrong.... when i was buying my stall they suggested for me to get a 3400 to 3600 stall. I got a 4000 stall and i absolutely love it. When i get my tires hot i can leave on stick shift cars.....