james562

iTrader: (35)

My cam only combo is finally wrapping up next weekend my question is how many people out there have or have had a close to stock or 100% stock 4l60E last for a short while(3-6 months or 20-40 passes)behind a 400RWHP cam only setup? The car will also see a 150-200 wet hit and should make mid 5XX and close to 600ftlbs of RWTQ...

I have a stock 4l60E with a shift kit, billet accumulators, 24K B&M cooler,!TQ management,window switch shutting down the spray at 6400, car will be shifted 6600-6800 depending on what nets the best possible ET....

Does my stocker have a snowballs chance in hell? Or will it snap like a twig on the first couple dyno/track passes?

james562

iTrader: (35)

If it helps any car is pretty light 3200-3300 W/driver and has full suspension front and rear.

Also I am using a 3600 single disc Vig converter

01ssreda4

iTrader: (96)

i'd say start saving your money.....

KBG

iTrader: (32)

for a tranny and a rearend

STALL UP

iTrader: (2)

my stock 4l60e lasted for 2-1/2 years 550rwhp street driving no track time,When I had it rebuilt because I was doing a bigger motor and blower the tranny guy said that it looked great inside just a couple very light burns on the cluch packs. So if you take care of it, it might last a couple years it might last one day you never know.

SPRAYED 01

iTrader: (22)

If you have any chance you need to keep it very cool. I run 2 trans,one is a 28gvw and the other is about a 19gvw. I can beat on mine on a road course or hot lap it at a drag strip 3 times and it wont go over 175. Its cheap and might give you a chance.

01SOMm6

iTrader: (4)

My Tranny started to go when I was on leave for Iraq. I was only home for 2 and a half weeks on the new setup. Cam only Full-Bolt on 393rwhp plus a 150 shot. It started slipping in second gear right before I left.

ChocoTaco369

My guess is if you spray it on the dyno or make a track pass where you're using a 200 shot and SERIOUSLY make 550-600rwhp, it'll blow that first time. That's double the power of a stock car on a stock transmission with tens of thousands of miles on it. If it doesn't blow on the dyno or the first pass, I give it 2 or 3 more tries.

james562

iTrader: (35)

The way I look at it, it should last while when we tune it N/A(380-410RWHP and 360-380RWTQ) but once we knock the N/A tune out and step it up to the N20 hit it wont like that for long and I'd be lucky if it lasts long enough to make the 10 dyno pulls we need to knock out the tune...



Another question I'd like to know, When does a single Disc 9.5 lock up converter become a liability? I'm assuming as long as we dont do the N20 pulls locked up I should be fine....I tried calling Precision Industries but they're closed for the holiday weekend....

Something about 550RWHP locked up WOT throiugh a single 9.5 clutch doesn't sound durable to me.

Is it even possible to upgrade my current unit or would I have to purchase a entirely new converter? There the same dimwnsions enternally but internally I'm unsure as to what would need to be swapped out to make it a multidisc...

james562

iTrader: (35)

I'm hoping for a situation similar to yours although I don't expect it. Your unit was an exception, not the ordinary situation that most 4l60 owners experience. I can hope for the best and take a crack at it next weekend.... Wish me luck

james562

iTrader: (35)

We have very similar setups thanks for the info. I'm assuming yours made it through the dyno thrash that the tuning consisted of... What did it make on the full 150 hit? Did you do the runs with the converter locked at WOT?

01SOMm6

iTrader: (4)

It def made it through the dyno. Although I didnt spray on the dyno. I just had it tuned for spray and put the kit on a couple days later. I think it was a total of 4 WOT runs and 2 Dead Stop WOT runs to check my shift points. I wish I could find out what it does on the 150 Shot 128+ Traps is all I know.
The converter was locked at WOT.

I have a video of my car and you can hear a slight hesistation/slip in the 1-2 **** at wot on the 150 shot. Thats when I considered it was on the downhill. Back then I had a Fuddle 3400 and 3.42. 255/60/16 MT Radials.

james562

iTrader: (35)

anyone else care to chime in?

Azrael

iTrader: (10)

I'll chime in... We just swapped out our stock 4L60E on the Camaro and it was still working perfectly. That is making more that 550 rwhp and running a 10.4@130... Matter of fact that stock A4 transmission is now in another 10 second car and still alive and well! It just went 10.3@131 in that car with a 1.4 60' on a 4400 stall!

While I agree it may be a crap shoot, I also say if you are taking care of the transmission it will take care of you. The only reason we pulled the tranny was to donate it and get some miles on our built tranny to warm it up for the LSX 454.

Mr. Brett

iTrader: (13)

It's a crap shoot, man. I put a 228R and LS6 heads on my car with a stock 4L60E w/50k miles on it. It survived a few dyno runs but blew out the rear planetary on its third track pass. Proper maintenance helps, but you can't get past the fact that these trannies in stock form just can't handle the power, temps, or revs that they see once the engine makes more than the stock power.

aaron653

iTrader: (1)

i'm on the stock tranny with a cooler...installed the converter back in october and the h/c in march

rufretic

iTrader: (37)

Cross your fingures, it's a coin toss. Mine lasted multiple pulls over 600rwhp highest being 682rwhp and over 10 mid to low 10 second passes. I blew the block and the trans was still fine. Some people blow them stock. Just make sure you keep it cool, I never let it get over 180. Also avoid roll racing/down shifts, big no,no for 4l60es.

By the way, I voted "I'm not God", nice pole choice lol.

sidewayz28

iTrader: (24)

yeah listen to this expert here

ChocoTaco369

Uh huh, and what's wrong with what I said? What makes you inclined to come into the thread, quote me and provide no input to the situation? Or do you just want to start an argument? Grow up, toolbox.

Hennytime

iTrader: (33)

id say it could last a bit with less rpm. a buddy of mine had a blower makin 550rw on a stocker for a long time. thing is he spun it to 6300. i just say **** it run it till it breaks then get a th400