Turbo 350 trans probs HELP

[Chevytime94]

Hey,yall im new to the forum.i got a 1994 chevy k1500 replaced the engine(no computer) a 70s 350 built(comp cams) hydro rocker lifters ederlbdrok performer intake n heads 750cfm carb any way 475hp 480lb ft and recently added turbo 350 i installed it worked great for 1 week then many leaks and slipping modulator blew off i replaced it.now the truck did then act like it was in first on the column while in driver ,ovr driver or 3rd gear (high rpm...slow speed) after that will not drive in driver it only moves in reverse.i suspect this trans is cooked but not 100% sure anyone have and idead r options for me? Any info be good
Thanks yall

 

[PenguinLTZ]

Hey,yall im new to the forum.i got a 1994 chevy k1500 replaced the engine(no computer) a 70s 350 built(comp cams) hydro rocker lifters ederlbdrok performer intake n heads 750cfm carb any way 475hp 480lb ft and recently added turbo 350 i installed it worked great for 1 week then many leaks and slipping modulator blew off i replaced it.now the truck did then act like it was in first on the column while in driver ,ovr driver or 3rd gear (high rpm...slow speed) after that will not drive in driver it only moves in reverse.i suspect this trans is cooked but not 100% sure anyone have and idead r options for me? Any info be good
Thanks yall

What does the fluid look and smell like? Sounds like she's done. Running without the modulator is never a good thing.

No overdrive in a TH350.

I am curious about your engine numbers. Did you have that 350 dynoed? I have built quite a few of them, and have never achieved hp/tq numbers with a standard displacement, hyd cam, and only 750 CFM on a Performer intake.

Welcome to the site. Others will be along with more trans info, I am sure

 

[dirtyoldman]

If your engine truly puts out the hp & tq numbers like you say it does I highly recommend installing a TH400 trans,a TH350 isn't going to last very long unless it's built to withstand those numbers.

 

[Black02Silverado]

Definitely sounds like it is cooked. Need more info like posted above, what is the fluid like, color, level and welcome to TMC.

 

[txab]

Sounds like...

 

[Chevytime94]

Oddly trans fluid looks and smells fine pulled pan it was good and yes it was dynoed 2 years ago the trans i had before that got toasted too i stripped it appart and clutch bands were fried. But anyways best way to go is rebuild i dont want to go through buying a 3 trans haha ohhhh also if i install it again any opinions on to have it lock up or not with the TQ?

 

[daddy]

Can't help on that last part but any chance you have pics of the engine and shots of the dyno results? Those are pretty amazing numbers.

 

[Chevytime94]

Ohhh also the engine has a pretty big cam(lost cam card) balanced crank cold air intake hooker headers long tubes and bored with true dual exaust to flowmaster super 10s....loudes truck in the county

 

[PenguinLTZ]

Just what improvements did you make to the trans? If you truly have that much power, the trans would never last. Actually the first time you stood on it in a full size truck, 580 lb ft would induce immediate slippage and fry the first band.

What torque converter did you install? "Pretty Big Cam" for those numbers, would mean it is truly massive, and that is another issue. If you ran a stock TQ, this truck would cook the trans just getting itself rolling. No stall?

Cold air intake? Please post the pictures of this.

 

[Chevytime94]

Stock trans info of tq is un known as it was given to me of a difftent th 350