|
|
07-10-2008, 04:01 AM
|
#1 |
|
Registered User
Status: Offline
Join Date: Jul 2008
Member ID: 92104
Pics: My Gallery
Location: jacksonville Fl
Age: 21
Posts: 9
|
4l60 help needed
Okay my truck is 1995 z71 I put the holley throttle body on now it shifts funny(early shifts), the truck has a chip(not sure which one previous owner) could that be the problem? thanks
|
|
|
07-10-2008, 09:39 AM
|
#2 |
|
Registered User
Status: Offline
Join Date: Oct 2002
Member ID: 3222
Pics: My Gallery
Location: Bright, IN
Posts: 659
|
Re: 4l60 help needed
You could be in trouble real quick.....ie. toasted transmission.
Not only are your shift points too early, you're also running dangerously low line pressure at part throttle and slipping clutches and bands. I'm assuming your Holley TB is a larger diameter than the one you replaced. If so, your engine is now producing more torque at a given throttle angle than it did before. Either figure out how to modify the TV cable/adjustment to compensate (the factory TV adjustment method will no longer work for you), or put your stock TB back on.
Pat Gish
'98 XCSB, L31 + ZZ3 cam, Hooker LT's, 2500 Vig PCMFORLESS.COM 87 octane tune 14.92 @ 89.7 on motor (with stock cam) 13.76 @ 97.0 w/ a 50 dry shot (ZZ3 cam) '96 ImpalaSS, tuned by PCMFORLESS.COM: 12.36 @107.6 stock cam and heads 11.33 @116.6 with 150 wet shot |
|
|
|
07-10-2008, 10:40 AM
|
#3 |
|
Registered User
Status: Offline
Join Date: Jul 2008
Member ID: 92104
Pics: My Gallery
Location: jacksonville Fl
Age: 21
Posts: 9
|
Re: 4l60 help needed
Okay thanks I will adust it tonght and let you know Thanks.
|
|
|
|
07-13-2008, 10:07 AM
|
#4 |
|
Registered User
Status: Offline
Join Date: Jul 2008
Member ID: 92104
Pics: My Gallery
Location: jacksonville Fl
Age: 21
Posts: 9
|
Re: 4l60 help needed
thanks for the reply I would have never figured that out
|
|
|
|
07-13-2008, 12:45 PM
|
#5 |
|
Premium Member #30
GMC RULZZ
 Status: Offline
Join Date: Mar 2005
Member ID: 25597
Pics: My Gallery
Location: San Diego
Age: 41
Posts: 6,440
|
Re: 4l60 help needed
No TV cable on a 95. He has the 4L60E. its all electronic.
 O2 GMC RCSB 4.8L V8 AUTO 3.73'srebuilt/beefed up 4L60E(at 43,000miles)  TRAIN HORNS(see pics in my gallery)
|
|
|
|
07-13-2008, 12:51 PM
|
#6 |
|
Premium Member #30
GMC RULZZ
Status: Offline
Join Date: Mar 2005
Member ID: 25597
Pics: My Gallery
Location: San Diego
Age: 41
Posts: 6,440
|
Re: 4l60 help needed
Is the chip for the holley tbi? If not you will need to get another one. or tune and burn one yourself. Are you using stock size tires? if not you need to recalibrate the DRAC.
once the above is correct, your gonna have to put a line pressure guage on the test port. Put a line pressure gauge on the pressure test port and go for a drive to verify proper line pressure. Base pressure at idle in P,N,OD should be around 70psi and around 140psi in R. Max line pressure should be at least 190psi at WOT in 1st or 2nd, 225psi is optimum. If base pressure is low, trans or pump is worn out. If max pressure is low, check EPC solenoid. If reverse is slow to engage, and line pressure does not come up to at least 130psi in reverse, replace the boost valve. O2 GMC RCSB 4.8L V8 AUTO 3.73'srebuilt/beefed up 4L60E(at 43,000miles) TRAIN HORNS(see pics in my gallery)
Last edited by NEUMANNZZ : 07-13-2008 at 12:54 PM. |
|
|
|
07-16-2008, 09:12 AM
|
#7 |
|
Registered User
Status: Offline
Join Date: Jul 2008
Member ID: 92104
Pics: My Gallery
Location: jacksonville Fl
Age: 21
Posts: 9
|
Re: 4l60 help needed
The cable with the adjuster I cant get it excact any more sugestions
|
|
|
|
07-16-2008, 11:35 AM
|
#8 |
|
Premium Member #30
GMC RULZZ
Status: Offline
Join Date: Mar 2005
Member ID: 25597
Pics: My Gallery
Location: San Diego
Age: 41
Posts: 6,440
|
Re: 4l60 help needed
O2 GMC RCSB 4.8L V8 AUTO 3.73'srebuilt/beefed up 4L60E(at 43,000miles) TRAIN HORNS(see pics in my gallery)
|
|
|
|
09-05-2008, 03:48 PM
|
#9 |
|
formerly 90chevytug
Status: Offline
Join Date: Apr 2007
Member ID: 67088
Pics: My Gallery
Location: Montana
Age: 22
Posts: 336
|
Re: 4l60 help needed
Just reading thue some old posts in a seach. How did it all end up for ya? Did someone swap in a 700 for the tranny?
1994 Chevy, 406, Custom Chip, BRAND NEW 4L60E with Updated Transgo Shift Kit and Blue Line Clutches, Holly 650cfm TBI, Performer Intake.
"Just remember every payday is Mother's Day... Because I have to pay this Mother @*&^, and this Mother @*&^..." |
|
|
| Advertisements |
|
|
 |
| Thread Tools | |
| Display Modes | |
|
|
Linear Mode
