Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

4l80 Trans brakes/mvb ??

Thread Tools
 
Search this Thread
 
Old Dec 17, 2010 | 09:50 AM
  #21  
Jake's Performance's Avatar
FormerVendor
iTrader: (2)
 
Joined: Oct 2010
Posts: 1,774
Likes: 24
Default

The HD2 kit is not full manual, it just makes firmer shifts.

The HD3 kit is full manual.

With our full manual setup, it is plug and play reversible to PCM control.

Using a computer, you can still manually shift the 4L80E.

If you use a manual VB it must always be manually shifted.
Reply
Old Dec 17, 2010 | 11:02 AM
  #22  
Vetal's Avatar
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (3)
 
Joined: Aug 2006
Posts: 1,989
Likes: 2
From: Latvia
Default

OK, so it seems I don't need shift kit at all if I'm going to get MVB.
Originally Posted by Jake's Performance
With our full manual setup, it is plug and play reversible to PCM control.

Using a computer, you can still manually shift the 4L80E.
....
Could you please explain that a bit?
Can I have best of both worlds, i.e. tranny staying in gear when I need it (I would hate it to change the gear when I'm taking corner sideways on wet road), and fast changing gears during dragrace or just good start from the lights?
Reply
Old Dec 21, 2010 | 02:07 PM
  #23  
slow67's Avatar
Gingervitis Addict
15 Year Member
iTrader: (2)
 
Joined: Nov 2004
Posts: 2,399
Likes: 3
From: DFW
Default

Originally Posted by Vetal
OK, so it seems I don't need shift kit at all if I'm going to get MVB.
Could you please explain that a bit?
Can I have best of both worlds, i.e. tranny staying in gear when I need it (I would hate it to change the gear when I'm taking corner sideways on wet road), and fast changing gears during dragrace or just good start from the lights?
Heres how it goes (at least on my 2000 4L60E tune controlling the 4L80E):

If you put the shifter in 3rd, there is physically no oil to go to 4th, so the trans will still go 1-2-3 autmoatically.

the 2000 car 4L60E tune has "2nd gear start", so if I put the shifter in 2nd, it will stay in 2nd ALL the time.

If I put the shifter in 1st (well, at as long as I don't downshift to 1st about 30 something mph) it will always stay in 1st.

Its about as good as you can get as far as best of both worlds.
Reply
Old Dec 21, 2010 | 03:58 PM
  #24  
Vetal's Avatar
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (3)
 
Joined: Aug 2006
Posts: 1,989
Likes: 2
From: Latvia
Default

That makes sense... So it means if I put selector into gear N, it will not go HIGHER than N, but may select lower gear? Let's say I want to take a corner at 2000rpm, put selector in 2nd, it still might change to 1st? Is it normal "auto" valve body?
And if I opt for manual valve body, if I select 2nd gear it won't change anywhere and stay in 2nd forever?
Reply
Old Dec 22, 2010 | 10:52 AM
  #25  
slow67's Avatar
Gingervitis Addict
15 Year Member
iTrader: (2)
 
Joined: Nov 2004
Posts: 2,399
Likes: 3
From: DFW
Default

Originally Posted by Vetal
That makes sense... So it means if I put selector into gear N, it will not go HIGHER than N, but may select lower gear? Let's say I want to take a corner at 2000rpm, put selector in 2nd, it still might change to 1st? Is it normal "auto" valve body?
It is true for 3rd and 4th....mine will stay in 2nd forever if I put it in 2nd, and same with 1st (as long as I am under ~35mph when I do the downshift from 2-1, if I am above it will wait in 2nd until I am under 35mph....but that is dangerous anyway).

My friends truck (very early 99 GMC with 4.8L PCM) will shift 1-2 even if the shifter is in 1st. But EFILive can correct this (currently hptuners tuned).


Originally Posted by Vetal
And if I opt for manual valve body, if I select 2nd gear it won't change anywhere and stay in 2nd forever?
Correct. The gear the shifter is in is the gear that the transmission will be in.....forever.
Reply
Old Dec 23, 2010 | 04:39 PM
  #26  
Vetal's Avatar
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (3)
 
Joined: Aug 2006
Posts: 1,989
Likes: 2
From: Latvia
Default

Originally Posted by Jake's Performance
With our full manual setup, it is plug and play reversible to PCM control.

Using a computer, you can still manually shift the 4L80E.
Could you please explain that? What do you mean by "plug and play reversible to PCM control"? And by "Using a computer, you can still manually shift the 4L80E" - do you mean I can select HIGHEST gear it can change to?
Reply
Old Jan 23, 2011 | 06:08 PM
  #27  
Vetal's Avatar
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (3)
 
Joined: Aug 2006
Posts: 1,989
Likes: 2
From: Latvia
Default

Originally Posted by Jake's Performance
With our full manual setup, it is plug and play reversible to PCM control.

Using a computer, you can still manually shift the 4L80E.

If you use a manual VB it must always be manually shifted.
I still do not fully understand this... Could you please expalin this a bit? How is it reversible? How can I manually shift if I'm using computer (so I guess it's not manual valve body)?
Reply
Old Jan 26, 2011 | 09:26 AM
  #28  
Randy WS6's Avatar
TECH Addict
iTrader: (69)
 
Joined: Oct 2002
Posts: 2,755
Likes: 2
From: Baxter,KY.
Default

Im going to order the trans brake with the FMVB from Jake in a few weeks. I have one of his old style style brake with the TransGo-3 FMVB in my 4L80 right now , but the new one said it has a quicker release rate and has it own FMVB.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo




All times are GMT -5. The time now is 04:55 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE