HOME FORUM RULES CONTACT
     
   
   

Go Back   CLASS RACER FORUM > Class Racer Forums > Stock and Super Stock Tech
Register Photo Gallery FAQ Community Calendar

Reply
 
Thread Tools Display Modes
Old 10-01-2022, 01:35 PM   #1
Mark Yacavone
Veteran Member
 
Mark Yacavone's Avatar
 
Join Date: Mar 2002
Location: Miles From Nowhere
Posts: 7,814
Likes: 2,903
Liked 5,118 Times in 1,950 Posts
Default New Question of the Day

I just read the rule book down load about automatic shifting in Stockers .
I couldn't c&p it from there, but it says that electric upshift can be used in the vehicle was originally equipped with a computer.
Are they talking about engine management computers or about auto transmissions originally being controlled by the computer? Or maybe delay wiper or electronic cruise control computers?
Reason I ask is because the factory /experimental cars came with T400's and PG's, which were shifted by a governor originally.
__________________
"We are lucky we don't get as much Government as we pay for." Will Rogers
Mark Yacavone is offline   Reply With Quote
Old 10-01-2022, 06:19 PM   #2
Keith 944
VIP Member
 
Keith 944's Avatar
 
Join Date: Feb 2006
Location: Dela-where?
Posts: 2,193
Likes: 1,160
Liked 1,877 Times in 577 Posts
Default Re: New Question of the Day

That’s funny, but a very good point
__________________
KEITH MAYERS
2-1/2 X somebody
Still many X nobody
Keith 944 is offline   Reply With Quote
Old 10-02-2022, 10:29 AM   #3
SSDiv6
VIP Member
 
Join Date: Feb 2003
Location: Glendale, Arizona
Posts: 3,043
Likes: 712
Liked 1,577 Times in 581 Posts
Default Re: New Question of the Day

Quote:
Originally Posted by Mark Yacavone View Post
I just read the rule book down load about automatic shifting in Stockers .
I couldn't c&p it from there, but it says that electric upshift can be used in the vehicle was originally equipped with a computer.
Are they talking about engine management computers or about auto transmissions originally being controlled by the computer? Or maybe delay wiper or electronic cruise control computers?
Reason I ask is because the factory /experimental cars came with T400's and PG's, which were shifted by a governor originally.
Factory Stock cars running the TH-400, Powerglide, or C-4 are not computer controlled.

I believe this applies to the other EFI cars that have computer-controlled transmissions.
SSDiv6 is offline   Reply With Quote
Old 10-02-2022, 12:03 PM   #4
Mark Yacavone
Veteran Member
 
Mark Yacavone's Avatar
 
Join Date: Mar 2002
Location: Miles From Nowhere
Posts: 7,814
Likes: 2,903
Liked 5,118 Times in 1,950 Posts
Default Re: New Question of the Day

It looks like 1997 and newer GM RWD cars would be the first ones to be able to use electronically controlled upshifts.
Anything earlier , the lock up converter function only, could be employed
Is that correct?

Enter the 4L60 and 4L60E

GM renamed the TH700R4 in 1990 as the 4L60 to reflect its purpose as a four-speed with a longitudinally placed matching engine and a gross vehicle weight rating of up to 6,000 lbs. The automaker made no mechanical changes to the TH700R4. In 1997, the electronically controlled-shift version became available in rear-wheel-drive cars and two- and four-wheel drive trucks. The sixth-generation Chevrolet Corvette was also equipped with the 4L60E transmission. The 4L60E used solenoids and electronic actuators to control the clutches, valve body and bands to shift gears. GM's Vehicle Speed Sensor and a vehicle powertrain computer determined when gear shifting was optimum. T
__________________
"We are lucky we don't get as much Government as we pay for." Will Rogers
Mark Yacavone is offline   Reply With Quote
Liked
Old 10-02-2022, 12:07 PM   #5
Billy Nees
VIP Member
 
Join Date: Oct 2002
Location: On a hilltop in Pa.
Posts: 4,487
Likes: 3,588
Liked 7,688 Times in 1,732 Posts
Default Re: New Question of the Day

I've been told that certain FFFords had electronic trans in '94?
__________________
Billy Nees 1188 STK, SS

I'm not spending 100K to win 2K
Billy Nees is offline   Reply With Quote
Old 10-02-2022, 12:10 PM   #6
Mark Yacavone
Veteran Member
 
Mark Yacavone's Avatar
 
Join Date: Mar 2002
Location: Miles From Nowhere
Posts: 7,814
Likes: 2,903
Liked 5,118 Times in 1,950 Posts
Default Re: New Question of the Day

I guess it depends on where you look ..No wonder NHRA is confused on this subject.


GM upgraded the 4L60 to electronic control with the 1993 model year and these transmissions were used in a wide variety of applications from the Camaro and Corvette to full size cars and light and medium duty trucks. The big improvement was total electronic control which eliminates the need for the troublesome TV cable and also did away with the spinning weights and springs used in the governor, since input and output speeds are now measured by sensors and the up and down-shifts are controlled by an electronic transmission controller.

FWD
GM started adding electronic controls to the 4T60 in 1990 with the Cadillac Allante carline's unique F7, and 1991 and after with the corporate 4T60-E.
__________________
"We are lucky we don't get as much Government as we pay for." Will Rogers

Last edited by Mark Yacavone; 10-02-2022 at 12:14 PM.
Mark Yacavone is offline   Reply With Quote
Old 10-02-2022, 05:11 PM   #7
GTX JOHN
VIP Member
 
Join Date: Jun 2009
Location: Boulder City, Nevada 89005
Posts: 2,732
Likes: 2,798
Liked 2,479 Times in 697 Posts
Default Re: New Question of the Day

I have not seen them police the 1 -2 shift for years.

I would not worry about it in any Stocker!
__________________
John Irving
741 Stock
741 Super Stock
GTX JOHN is offline   Reply With Quote
Old 10-02-2022, 05:21 PM   #8
GTX JOHN
VIP Member
 
Join Date: Jun 2009
Location: Boulder City, Nevada 89005
Posts: 2,732
Likes: 2,798
Liked 2,479 Times in 697 Posts
Default Re: New Question of the Day

I have not seen them police the 1 -2 shift for years.

I would not worry about it in any Stocker!
__________________
John Irving
741 Stock
741 Super Stock
GTX JOHN is offline   Reply With Quote
Old 10-03-2022, 11:25 AM   #9
Mark Yacavone
Veteran Member
 
Mark Yacavone's Avatar
 
Join Date: Mar 2002
Location: Miles From Nowhere
Posts: 7,814
Likes: 2,903
Liked 5,118 Times in 1,950 Posts
Default Re: New Question of the Day

Quote:
Originally Posted by SSDiv6 View Post
Factory Stock cars running the TH-400, Powerglide, or C-4 are not computer controlled.
Joe, So they can or can't used electric solenoids and control box to make their shifts?
__________________
"We are lucky we don't get as much Government as we pay for." Will Rogers
Mark Yacavone is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:43 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.