I've been using a wet 75 shot on my Impala and never had a problem so far with the tranny. I have a 2400 stall and a transgo kit installed. But I hear that the trans limit is 350lbs, is a transgo and bigger stall going to help out the life of the trans or should I expect the trans life decline? I never use nitrous between the shifts. TIA

 

I'm guessing you mean 4L60E. I spray a 150-175 shot out the hole (slicks), and through the shifts. Time in sig. Properly built they can run some good #'s.

 

my buddy at GM told me that in stock form, their not designed to take that much more power than stock. i started out spraying a 100 shot on my completely stock tranny between shifts with no problems at first. then i moved up to the 150, and it slips on the 2-3 and wont actually shift into 3rd.

my car now has 104k miles and i started spraying around 95k. my buddy told me that at 100k, i should really have the tranny flushed. so in order to try and help the slipping prblem heres what ill be doing in the next couple of weeks-

1. getting tranny flushed

2. putting in all new B&M synthetic shift fluid

3. getting JET Performance Shift-Plus shift kit (consisting of a module to electronically select between different shift settings, and a valve body kit)


hopefully this will help with the shifting for a while. if not, i will be buying a new tranny soon.





jon

 

I heard the synthetic tranny fluid is bad to put in our trannies. I was told only use Dexton III. Synthetic tranny fluid does not have that. Also putting a shift kit like transgo on a half-dead tranny is like giving a dead person CPR. Also if you go throught the electric shift kit, it'll work the same way except the tranny will die sooner, because you;re putting too much pressure on the lines.

Does anyone know if a 4L80 trans bolt up to an LT1 or does is a TH400 good for Nitrous use?

 

I'm having my trans rebuilt right now as we speak because I'm already having problems with the 4L60E, with only heads and cam so I'm gonna do a rebuild before I spray.....

Just to be safe

 

When built properly they will live deep into the 11s easy. I have them running 10s.

I run 11s N/A with synthitic fluid. I have a 175 shot ready to go and expect no problems with my 54K miles trans.

At 105K Miles I would rebuild it

 

 

DERRICK REED-- what work have you had done to your trans? im building a 396 with a 125 and really need some suggestion on my 4l60e. thanks man

 

Sent you an email.

 

Some of you guys must be lucky then. I couldn't keep my 4L60E on the spray without blowing it up all the time. The TH-400 does great though. It does bolt up to the enigne (whoever asked) but a mounting bracket, speed sensor, driveshaft. dipstick etc. are other issues. I really do miss having overdrive too.