fatboyss Posted November 11, 2006 Report Share Posted November 11, 2006 Ok, it looks like I am finally going to put the STS on my truck. My question is should I do anything to the trans first to make it stronger? I have a shift kit already, but I was wondering if I should do anything else. I only plan on running 5-6lbs for awhile. Would it be worth the money to do anything to beef it up or will it be ok with low boost? Also, I am have a problem at WOT around 30 and 60 it wont shift it just bounces off the rev limiter. And sometimes a sylinoid will get stuck open and it wont shift out of 1st. I do have a 3000 stall and a shift kit. Could it be the stall or shift kit, or could it be in the tune? Any help would be great Quote Link to comment Share on other sites More sharing options...
Quicksilverado Posted November 12, 2006 Report Share Posted November 12, 2006 Better start shopping for a built tranny. Quote Link to comment Share on other sites More sharing options...
fatboyss Posted November 16, 2006 Author Report Share Posted November 16, 2006 Any ideas Quote Link to comment Share on other sites More sharing options...
Bowtie70SS Posted November 16, 2006 Report Share Posted November 16, 2006 Could be something in the tune...if shift RPM and MPH aren't "made" then it won't shift until both are...any codes? Make sure none are disabled. Dave Quote Link to comment Share on other sites More sharing options...
BeefTip Posted November 16, 2006 Report Share Posted November 16, 2006 fatboyss is my brother and has a Yank 3k stall, HD2 transgo shift kit, aluminum accumulator piston and vette servo. He had no tranny probs before these parts.. After install and a tune from pcmforless, downshifts were raised on 1-2 shifts as well as 3-4. Whenever he would downshift at the maximum mph for the 2-1 downshift around 35 or so it would bang off of the rev limiter, but a few mph under that speed it was perfect and would slam you in your seat.. He said now it did it to him on the highway going from 4-2 at around 60, his other hard downshift. Now a few months ago we put his STOCK pcm back in(kept it for a backup) and there were absolutely NO shifting probs with the tranny but it, but the factory downshift points were at least 5 mph lower all around and it felt like a dog lol. I believe line pressure is still around 5-10% which i believe should be lowered to 0% since there is a shift kit on the truck...This may be causing the solenoid problem coupled with the 3k stall in a 5500lb truck. I truely believe/hope that this is a tuning issue and not hardware...He does not beat on this truck at all..it has maybe 12 1/4 mile passes on it and a handfull of street races in 3 years..other than that it goes to and from school. Quote Link to comment Share on other sites More sharing options...
misterp Posted November 16, 2006 Report Share Posted November 16, 2006 fatboyss is my brother and has a Yank 3k stall, HD2 transgo shift kit, aluminum accumulator piston and vette servo. He had no tranny probs before these parts.. After install and a tune from pcmforless, downshifts were raised on 1-2 shifts as well as 3-4. Whenever he would downshift at the maximum mph for the 2-1 downshift around 35 or so it would bang off of the rev limiter, but a few mph under that speed it was perfect and would slam you in your seat.. He said now it did it to him on the highway going from 4-2 at around 60, his other hard downshift. Now a few months ago we put his STOCK pcm back in(kept it for a backup) and there were absolutely NO shifting probs with the tranny but it, but the factory downshift points were at least 5 mph lower all around and it felt like a dog lol. I believe line pressure is still around 5-10% which i believe should be lowered to 0% since there is a shift kit on the truck...This may be causing the solenoid problem coupled with the 3k stall in a 5500lb truck. I truely believe/hope that this is a tuning issue and not hardware...He does not beat on this truck at all..it has maybe 12 1/4 mile passes on it and a handfull of street races in 3 years..other than that it goes to and from school. <{POST_SNAPBACK}> My PCMForLess tune has the *exact* same behavior/problem. I've been wanting to adjust the kickdown points but haven't made time to do it. Mr. P. Quote Link to comment Share on other sites More sharing options...
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