BlackGMC

iTrader: (31)

Remember when messing with the tranny only change 1 thing at a time in small increments then go drive the truck to see what it did...

GoatChs

iTrader: (7)

I had to check their website to confirm, but...the Level 5 comes with the Sonnax Super Hold 4th gear servo; the Level 4 does not.

4L60E-4 Street Strip – Level 4
Price: $xxxx

Options
Vacuum Modulator Kit: $xxx
Deep Pan Kit: $xx

* FLT performance built pump ( Includes machined pump halfs to ensure flat surfaces, New A/C delco 13 vain pump/rotor/slide kit.
* Media blast case, bell housing, and tail housing to restore a new aluminum finish. Prep case for assembly.
* FLT sleeved input drum
* FLT beast shell kit w/bearing
* 8 B/W hi-energy clutches w/koleen steels in 3-4 clutch
* Bearing style reaction shaft
* B/W 29 element sprag
* 4L65 low roller clutch
* Transgo HD-2 shift kit
* Corvette servo
* Alto wide 2-4 red lined band with reinforced anchor
* Bushing kit
* New solenoids
* New Internal wire harness
* New GM Spacer plate
* B/W clutches
* Seal & gasket kit
* Filter with fiber pan gasket
* Updated aluminum accumulator pistons
* FLT prepped valvebody
* Set end play to FLT specs
* Install new cooler fittings

4L65/70E-5 Extreme Duty – Level 5
Price: $xxxx

Options
Vacuum mod kit: $xxx
300M Billet 4X4 output shaft: $xxx
300M Billet 2wd output shaft: $xxx
300M Billet C-5/C-6 output shaft4L60E/65E Only) $xxx

* FLT performance built pump ( Includes machined pump halfs to ensure flat surfaces, New delco 13 vain pump/rotor/slide kit )
* Media blast case, bell housing, and tail housing to restore a new aluminum finish. Prep case for assembly.
* FLT sleeved input drum
* FLT beast shell kit w/bearing
* GM 5 pinion input carrier
* GM 5 pinion reaction carrier
* Bearing style reaction shaft
* New reverse input drum
* Alto wide 2-4 carbon lined band with reinforced anchor
* 8 B/W hi-energy clutches w/koleen steels in 3-4 clutch
* B/W 29 element sprag
* 4L65 low roller clutch
* Transgo HD-2 shift kit
* Corvette Servo
* Sonnax super hold 4th servo
* Bushing kit
* New solenoids
* New Internal wire harness ( If needed on 4L70E )
* New GM Spacer plate
* B/W clutches
* Seal & gasket kit
* Filter with fiber pan gasket
* Updated aluminum accumulator pistons
* FLT prepped valvebody
* Set end play to FLT specs
* Install new cooler fittings

viciousknid

iTrader: (8)

yea. I had them add mine before they shipped it. Don't have to be in heavy throttle tho to feel it.
A buddy of mine just picked up an 08 CC and I gave him a ride in mine last night. went 70-90 and backed out. He was quite impressed with how hard it shifted. 2>3 was a jolt and backing out 3>4 was just a tad softer.

nonecktribe

well you probably should have bought the lvl 5, it wont matter that much since its the 4th gear servo, if you want firmer shifts gotta look at line pressures...good luck tearing down your tranny to install the 4th gear servo because thats not gonna make it shift any harder

05GTO6SPEED

iTrader: (3)

i dont remember if i turned it up all the way or 1/2 but that and a servo makes the trans shift faster and more firm, i had my 03 gmc's line pressure turned up with a servo for over 3 yrs and my 04 for a year and no problems at all

l_kusler

The only way to increase actual available line pressure that i can remember is by installing a boost valve and running stiffer springs on the pump ring and/or by changing the pump out with a high volume unit. Changing line pressure settings on the computer only changes control of the pwm solenoid, you are just using more of what you already have. I can't recall any screw adjustment on the 60e for line pressure, only valves and springs.