L99 3-4 Shift - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Wacker · 10-16-2009, 11:58 PM

Has anyone with a tune noticed that the 3-4 shift is significantly weaker/slower than all others, including 4-5 and 5-6? I am being picky because it is still better than stock, but it sucks compared to the rest.

Number_9 · 10-17-2009, 01:32 AM

Haven't noticed.. when you had your tune, was the shifting tweaked at all?

Wacker · 10-17-2009, 09:59 AM

Quote:

Originally Posted by Number_9

Haven't noticed.. when you had your tune, was the shifting tweaked at all?

My tune is very aggressive. 200 Psi and minimal times under adaptive learning. The 3-4 shift is simply weak compared to the rest. My shift points are set to 5900-6000. I think the tranny is mechanically not able to match the rest of the shifts. I get scratches 1-3 and then 3-4 falls way short.

jamesfl · 10-17-2009, 10:09 AM

I thought it was just mine. It is not that bad but I can definitely feel the difference at the track.

Wacker · 10-17-2009, 12:48 PM

Quote:

Originally Posted by jamesfl

I thought it was just mine. It is not that bad but I can definitely feel the difference at the track.

I honestly think it is an internal issue on how the 3-4 shift takes place. Maybe transgo will have a quick spring fix for it. I know they do not have a kit for this tranny yet, but they are working on one. From the attachment I would assume the 4-5-6 clutch pack assembly is the weak link.

Wacker · 10-17-2009, 03:35 PM

Quote:

Originally Posted by jamesfl

I thought it was just mine. It is not that bad but I can definitely feel the difference at the track.

How do you like your converter so far...I am going to test one for him also.

Wacker · 10-17-2009, 03:37 PM

Quote:

Originally Posted by Number_9

Haven't noticed.. when you had your tune, was the shifting tweaked at all?

What are your mods? I think I am simply over-powering the tranny like jamesfl.

rodimus prime · 10-17-2009, 03:38 PM

Yeah my 3-4 is weak too. My 1-2 and 2-3 are great. My 4-3 downshift scares the bejesus out of me.

Car has a yank 3600 too.

jamesfl · 10-17-2009, 03:43 PM

Quote:

Originally Posted by Wacker

How do you like your converter so far...I am going to test one for him also.

Only 3 runs so far on the converter, took a ten off but I was only pushing 5.5 psi so it was probably 2 10ths. Now I have 8.5 psi, meth injection and 16 lbs drag rims with M&H tires on order. I should be out again in about 2 weeks.

Wacker · 10-17-2009, 07:28 PM

Quote:

Originally Posted by jamesfl

Only 3 runs so far on the converter, took a ten off but I was only pushing 5.5 psi so it was probably 2 10ths. Now I have 8.5 psi, meth injection and 16 lbs drag rims with M&H tires on order. I should be out again in about 2 weeks.

Sweet keep us posted

Wacker · 10-17-2009, 07:30 PM

Quote:

Originally Posted by rodimus prime

Yeah my 3-4 is weak too. My 1-2 and 2-3 are great. My 4-3 downshift scares the bejesus out of me.

Car has a yank 3600 too.

Have you been able to log your downshifts. Hopefully your not flaring the tranny. A flare, especially on downshift, could kill a tranny fast.

rodimus prime · 10-17-2009, 07:50 PM

What the hell is flaing the trans?

Wacker · 10-17-2009, 08:51 PM

Quote:

Originally Posted by rodimus prime

What the hell is flaing the trans?

Flare is when the transmission slips just before shifting. If you watch your tach, you'll see your rpm's increase suddenly just before the shift occurs. The best way to check for this is with a data log.

jamesfl · 10-17-2009, 09:22 PM

look it up I just installed one from Innovate, logs upto 8 parameters to a sd mem card. I have it with a wideband sensor and MAP sensor plus everything you get from the OBD2 connection(50 params).

10-16-2009, 11:58 PM	#1
Wacker INTHECLOUDS Drives: 2010 2SS/RS Join Date: Aug 2009 Location: NM Posts: 912	L99 3-4 Shift Has anyone with a tune noticed that the 3-4 shift is significantly weaker/slower than all others, including 4-5 and 5-6? I am being picky because it is still better than stock, but it sucks compared to the rest. __________________ 2010 IOM 2SS/RS A6, Tuned by Me, ARH/NoCats, Borla Touring, Vararam CAI, G-Force 9" with 4.10's, Circle D 4500K, (Skinnies/Slicks, and Bogarts all around 24MPG 11.39 @ 118 510 DA www.6l80tuning.com www.6l90tuning.com Last edited by Wacker; 10-17-2009 at 12:15 AM.

10-17-2009, 01:32 AM	#2
Number_9 Drives: 2010 2SS/RS L99 Join Date: Mar 2009 Location: Trophy Club, TX Posts: 1,464 View My Garage	Haven't noticed.. when you had your tune, was the shifting tweaked at all? __________________

10-17-2009, 10:09 AM	#4
jamesfl BAD 4SS Drives: 2010 2SS/RS with ground effect Join Date: Jul 2009 Location: Hollywood, FL Posts: 148 View My Garage	Just told my tuner the EXACT same thing I thought it was just mine. It is not that bad but I can definitely feel the difference at the track. __________________ Procharger P1, Kooks LT, Corsa Cat-Back, AEM Meth injection, 2800 Stall, BMR trailing arms, DashDAQ computer, etc....

10-17-2009, 09:22 PM	#14
jamesfl BAD 4SS Drives: 2010 2SS/RS with ground effect Join Date: Jul 2009 Location: Hollywood, FL Posts: 148 View My Garage	Dash DAQ look it up I just installed one from Innovate, logs upto 8 parameters to a sd mem card. I have it with a wideband sensor and MAP sensor plus everything you get from the OBD2 connection(50 params). __________________ Procharger P1, Kooks LT, Corsa Cat-Back, AEM Meth injection, 2800 Stall, BMR trailing arms, DashDAQ computer, etc....

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10-17-2009, 03:38 PM	#8
rodimus prime Account Suspended Drives: Cargo van. Join Date: Jul 2009 Location: Metal Metal Land Posts: 1,247	Yeah my 3-4 is weak too. My 1-2 and 2-3 are great. My 4-3 downshift scares the bejesus out of me. Car has a yank 3600 too.

10-17-2009, 07:50 PM	#12
rodimus prime Account Suspended Drives: Cargo van. Join Date: Jul 2009 Location: Metal Metal Land Posts: 1,247	What the hell is flaing the trans?