This trans stuff is too weird. The trans shifts 2-3 at different speeds every time. I get flare and PCS line pressure seems to drop with rpm? Take a look at frames 10303 and 11097 (2 wot blips).
Built FLT transmission 4L65e
285/60/17
Yank SC2800
What the heck is going on?
Last edited by Trever1T; 08-10-2008 at 08:41 AM.
Crap, something is definately wrong and I (hopefully) believe it is the torque converter. My mpg is way down, it doesn't feel like it's locking strong and today, while going up a long hill it seemed the TC was surging ~200rpm. It feels sluggish as hell off the line at partial throttle.
Last edited by Trever1T; 08-10-2008 at 08:42 AM.
Is there a better config I can run to help me solve this problem? I am no tuner but am trying hard to solve and correct this on my own and could really use some experienced advise.
anybody?
this is what I'm talking about, although not as extreme as what I experienced yesterday. Is 148 rpm tcc slip normaol when the tcc is locked? See that almost rythmic surging?
Last edited by Trever1T; 08-12-2008 at 04:46 PM.
uh..... any thoughts?
still here!
I'm here huckleberry!!
Post your stock tune. What were the stock tire sizes? What is all done to the trans? Brand & stage of the shift kit, was a Corvette servo installed?
Any mods to the engine?
Russ Kemp
I'll let Trever1t chime in but had to chuckle a bit with your well founded questions Russ.
Trever went 11.60's last weekend at the track. The general answer to your questions would be everything has been done to the trans and engine.
03 Silverado Z71, 6.0L (LQ4), Magnacharger Radix, 90mm TB, 9psi boost, 60# Mototron FM Injectors, Meth Injection, LPE GT7 Cam, PI Vigilante 2600, FLT Level 5 4l65E, Dynatech, Custom Stainless Dual Exhaust, Detroit True-Trac, 4.10's, Electric Fans, AirAid CAI. HSW Dry Nitrous with 50 shot. 11.73 @ 114 - 2Bar SD - @@@Photos and Video@@@
lol, yeah, pretty much a fully built FLT level 5 with sonnax servo, I believe they use the Transgo HD2 shift kit. I'm pretty sure the converter lock-up clutches are gone, my rpms will increase 400rpm while my speed stays constant under a load.
The engine itself is stock with the exception of the LPE GT2-3 cam.
The logs from the track (with the converter set to not lock at all WOT) show clean sharp shifts if not just a little early. I did run an [email protected] this last saturday.
I'll post a stock tune from the repository when i get home, stock tire size was 265/70 17
Last edited by Trever1T; 08-20-2008 at 02:47 PM.
stock l33 from the repository
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