4l60e. original in a 98 camaro. slight mods nothing fancy maybe 325 to 345 at the crank. Drove fine for a year or so then one day i noticed the 2-3 gear change is lazy just driving and fine at WOT. then later one time at WOT it wouldnt hit 3rd at all. only did that once though. 2 months of a slow 2-3 gear change and all of a sudden it will hit the high gears and drive down the freeway but if i give it any power it slips horribly then slowly over a few seconds grips down and accelerates. I can punch it through 1 and 2 then take my foot off the gas let it get into 4 and give it a freeway cruiseing amount of throttle and its good. 1st and 2nd are as tight as theyve ever been, if you dont hit 3rd youll never notice a problem at all. fluid is burnt but ive seen worse, clear but brown. 129,000 miles.

Im not drivin it now, i was on a diagnostic run one evening and somebody was nice enough to leave dirt and mulch all over the road. whacked a curb, new rearend and two new wheels. Im pickin up a stock 10 bolt and a set of 5 spoke c5's tomorrow but i gotta get this f*****g tranny straitened out. If its comin out its gettin upgrades for sure but im tryin to figure out if the whole thing is junk or what?

Any Ideas?

 

PS ive had my line pressures bumped and the rev limiter and shift points bumped too. just a little and by a reputable shop. they told me it wouldnt hurt it one bit and honestly i didnt notice hardly any change.

 

I'm no expert, but I would definately be getting ready for a swap.

 

Yes sounds like you will be rebuilding or replacing very soon.