Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters

Skip shift set to avoid accidental 3rd to 2nd downshift?

Thread Tools
 
Search this Thread
 
Old Oct 13, 2006 | 10:14 AM
  #1  
ShevrolayZ28's Avatar
Thread Starter
TECH Addict
iTrader: (4)
 
Joined: May 2005
Posts: 2,318
Likes: 1
From: Massachusetts
Default Skip shift set to avoid accidental 3rd to 2nd downshift?

I started a thread in the advanced section asking about this, but like many threads posted there, it was unceremoniously moved to Lord knows where. (Now I can't find it because the search engine is dead!) Anyway....

....Has anyone done this? Can it be done just by tapping into the PCM and making some changes?
Reply
Old Oct 13, 2006 | 11:10 AM
  #2  
calhoon's Avatar
TECH Fanatic
20 Year Member
iTrader: (6)
 
Joined: Oct 2002
Posts: 1,967
Likes: 4
From: Charlotte metro area
Default

Yes it can be done and has been done many times for several years.
Reply
Old Oct 13, 2006 | 11:14 AM
  #3  
MeentSS02's Avatar
Kleeborp the Moderator™
20 Year Member
iTrader: (11)
 
Joined: Mar 2004
Posts: 10,316
Likes: 6
From: Dayton, OH
Default

Originally Posted by calhoon
Yes it can be done and has been done many times for several years.
Have any more info on this? I wasn't aware that the solenoid could be used in this fashion.
Reply
Old Oct 13, 2006 | 11:29 AM
  #4  
rollinna65's Avatar
TECH Enthusiast
iTrader: (18)
 
Joined: Nov 2004
Posts: 603
Likes: 1
From: Salado, TX
Default

Originally Posted by calhoon
Yes it can be done and has been done many times for several years.
I've never heard of this and really don't think its possible.
Reply
Old Oct 13, 2006 | 11:32 AM
  #5  
Iron Sights's Avatar
TECH Apprentice
 
Joined: Dec 2004
Posts: 309
Likes: 0
From: Evansville, IN
Default

Originally Posted by calhoon
Yes it can be done and has been done many times for several years.
Care to shed some light on this?

Oh yeah, subscribing.
Reply
Old Oct 13, 2006 | 12:06 PM
  #6  
calhoon's Avatar
TECH Fanatic
20 Year Member
iTrader: (6)
 
Joined: Oct 2002
Posts: 1,967
Likes: 4
From: Charlotte metro area
Default

It has been done, regardless of what you think or know. It has been used in the Viper competition coupes for several years. The changes are hardware and software( control) based.
Reply
Old Oct 13, 2006 | 01:30 PM
  #7  
Hugger Z's Avatar
12 Second Club
iTrader: (4)
 
Joined: Oct 2004
Posts: 1,363
Likes: 1
From: Holly, MI
Default

I thought the solenoid was an on-off part. I didn't think it could be set to a partial position. I imagine this could work if you cut the shaft of the solenoid to the length needed to block 2nd gear. At it's current length it will block out until 4th. Then I imagine some reprogramming for when it applies would be needed as it currently is only under gentle engine loading and below 2k rpm's.
Reply
Old Oct 13, 2006 | 01:50 PM
  #8  
calhoon's Avatar
TECH Fanatic
20 Year Member
iTrader: (6)
 
Joined: Oct 2002
Posts: 1,967
Likes: 4
From: Charlotte metro area
Default

It can/ has beed done but there is no hacking on the solenoid. In fact the solinoid is unchanged. If you are interested, PM me.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

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

 Pouria Savadkouei
story-2

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

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

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

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Oct 13, 2006 | 01:53 PM
  #9  
Avengeance's Avatar
12 Second Club
iTrader: (4)
 
Joined: Aug 2003
Posts: 1,618
Likes: 0
From: NorCal
Default

Originally Posted by calhoon
It can/ has beed done but there is no hacking on the solenoid. In fact the solinoid is unchanged. If you are interested, PM me.
Why dont you just post more info?
Reply
Old Oct 13, 2006 | 01:54 PM
  #10  
MeentSS02's Avatar
Kleeborp the Moderator™
20 Year Member
iTrader: (11)
 
Joined: Mar 2004
Posts: 10,316
Likes: 6
From: Dayton, OH
Default

So what you are saying is that it is possible (which anything is possible with enough money), but really not an option for the average end user? Software and hardware changes aren't trivial, that's for sure.
Reply
Old Oct 13, 2006 | 01:56 PM
  #11  
Hugger Z's Avatar
12 Second Club
iTrader: (4)
 
Joined: Oct 2004
Posts: 1,363
Likes: 1
From: Holly, MI
Default

Originally Posted by calhoon
It can/ has beed done but there is no hacking on the solenoid. In fact the solinoid is unchanged. If you are interested, PM me.
You have piqued my interest. PM sent.
Reply
Old Oct 14, 2006 | 09:47 PM
  #12  
tippmann243's Avatar
Launching!
20 Year Member
 
Joined: Mar 2005
Posts: 256
Likes: 1
From: st louis
Default

wouldnt you be able to do this by just milling off the 3rd gear stop off the shift rail (the part where the noid hits)

then reprogram the computer to kick the noid on after a predetermined MPH that can be obtained while in 3rd gear

for example if 2nd tops out at 50 mph and 3rd tops out at 75 you could ahve the noid activate at 60-70mph so when you go to hit the noid will be blocking second gear
Reply




All times are GMT -5. The time now is 12:48 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE