HOME MAGAZINE FORUM RULES SPONSORS CONTACT
     
   
   
 
Go Back   CLASS RACER FORUM > Class Racer Forums > Stock and Super Stock Tech

Reply
 
Thread Tools Display Modes
Old 05-14-2018, 01:29 PM   #1
Dan Fahey
VIP Member
 
Dan Fahey's Avatar
 
Join Date: Oct 2008
Location: Germantown, MD
Posts: 1,651
Default 4L60E Trans and Converters

Can you install a non locking racing converter in place of a locking converter without issue?

D
__________________
Daniel Fahey
Dan Fahey is online now   Reply With Quote
Old 05-14-2018, 03:20 PM   #2
ss3011
Senior Member
 
ss3011's Avatar
 
Join Date: Feb 2002
Location: Southeast Michigan
Posts: 589
Default Re: 4L60E Trans and Converters

There were 4 different turbine shafts available for the 700-R4 and 4L60e . The 4L60e came with 2 of them , a 298mm style , 30 spline , with a short stub journal with a seal on it , on the engine end of the shaft , and a second style meant for the 300 mm converter , 30 spline , but with a larger o-ring seal after the spline closer to the pump . As long as you inform the converter manufacturer which style shaft you have , there should be no problem using a converter without a converter clutch in it .
ss3011 is online now   Reply With Quote
Old 05-14-2018, 04:00 PM   #3
Ed Wright
Veteran Member
 
Ed Wright's Avatar
 
Join Date: Mar 2005
Location: Sand Springs, OK
Posts: 7,683
Default Re: 4L60E Trans and Converters

Been a few years since I delt with this, while my race car was still a street car. Seems like it required an input shaft without the passage through it, or the hole in the shaft plugged. Wish I could remember which. The people at TCI or ATI could tell you.

That 3.06 low gear is not likely a big issue for your car. Mine was like a tractor. Standing straight up, or spinning the tires. Front end stayed up through second gear in good air, if it hooked well. Likely not so much of an issue in a 4000 lb car with less hp. Big RPM drop at the shifts won't help anything. T350 trans was faster.
__________________
Ed Wright 4156 SS/JA

Last edited by Ed Wright; 05-15-2018 at 09:30 AM.
Ed Wright is online now   Reply With Quote
Old 05-15-2018, 06:56 AM   #4
Jim Kaekel
VIP Member
 
Join Date: Jul 2002
Location: Michigan
Posts: 1,001
Default Re: 4L60E Trans and Converters

Concerning the 3.06 first gear, Sonnax offers a replacement 2.84 gear set.
__________________
Jim Kaekel 3836 STK
Jim Kaekel is offline   Reply With Quote
Old 05-15-2018, 10:49 AM   #5
Ed Wright
Veteran Member
 
Ed Wright's Avatar
 
Join Date: Mar 2005
Location: Sand Springs, OK
Posts: 7,683
Default Re: 4L60E Trans and Converters

Quote:
Originally Posted by Jim Kaekel View Post
Concerning the 3.06 first gear, Sonnax offers a replacement 2.84 gear set.
That would be some help.
__________________
Ed Wright 4156 SS/JA
Ed Wright is online now   Reply With Quote
Old 05-15-2018, 11:36 AM   #6
Dan Fahey
VIP Member
 
Dan Fahey's Avatar
 
Join Date: Oct 2008
Location: Germantown, MD
Posts: 1,651
Default Re: 4L60E Trans and Converters

Quote:
Originally Posted by Jim Kaekel View Post
Concerning the 3.06 first gear, Sonnax offers a replacement 2.84 gear set.
My car seems to love the 3.08
For K/SA minimum weight is 4057.
Going to be little more than 4100lbs.
Can definitely see benefit of a 2.84 gears for the Camaro/Firebird

D
__________________
Daniel Fahey
Dan Fahey is online now   Reply With Quote
Old 05-15-2018, 11:51 AM   #7
Jim Kaekel
VIP Member
 
Join Date: Jul 2002
Location: Michigan
Posts: 1,001
Default Re: 4L60E Trans and Converters

Quote:
Originally Posted by Dan Fahey View Post
My car seems to love the 3.08
For K/SA minimum weight is 4057.
Going to be little more than 4100lbs.
Can definitely see benefit of a 2.84 gears for the Camaro/Firebird

D
I would certainly consider trying it. Although your car is hefty, a lower numerically gear set would provide closer ratios and less RPM drop on the gear changes, and may pick you up some E.T. The 3.06 may provide a quicker 60', for example, but that certainly doesn't guarantee that you will have a quicker E.T. slip. Just my .02.
__________________
Jim Kaekel 3836 STK
Jim Kaekel is offline   Reply With Quote
Old 05-15-2018, 12:48 PM   #8
Dan Fahey
VIP Member
 
Dan Fahey's Avatar
 
Join Date: Oct 2008
Location: Germantown, MD
Posts: 1,651
Default Re: 4L60E Trans and Converters

Quote:
Originally Posted by Jim Kaekel View Post
I would certainly consider trying it. Although your car is hefty, a lower numerically gear set would provide closer ratios and less RPM drop on the gear changes, and may pick you up some E.T. The 3.06 may provide a quicker 60', for example, but that certainly doesn't guarantee that you will have a quicker E.T. slip. Just my .02.
That can be an option down the road.
Does great in 1/8 mile and does not bog in between.
Already in third before the 1/8th mile..

D
__________________
Daniel Fahey
Dan Fahey is online now   Reply With Quote
Old 05-15-2018, 01:50 PM   #9
James Packer
Junior Member
 
Join Date: Feb 2013
Location: Pasco, Wa.
Posts: 12
Default Re: 4L60E Trans and Converters

You need to modify the convertor clutch circuit to feed the torque convertor properly by using a kit like this https://www.summitracing.com/parts/trg-4l6-ccv.
James Packer is online now   Reply With Quote
Old 05-15-2018, 03:44 PM   #10
Dan Fahey
VIP Member
 
Dan Fahey's Avatar
 
Join Date: Oct 2008
Location: Germantown, MD
Posts: 1,651
Default Re: 4L60E Trans and Converters

Quote:
Originally Posted by James Packer View Post
You need to modify the convertor clutch circuit to feed the torque convertor properly by using a kit like this https://www.summitracing.com/parts/trg-4l6-ccv.
My Trans was built by PerformaBuilt Trans

http://www.performabuilt.com/gm%20pe...d%20truck.html

Just called and talked to Frank at PerformaBuilt...
I can install a Non-Locking converter in place of the Locking Converter with no issues.
Should have spoken to him first.

Now have to decide the correct size and stall.

What is a good stall speed to start with 5000rpm?
John Partridge suggested 5500/5600 with full up Stocker cam.


Dan
__________________
Daniel Fahey

Last edited by Dan Fahey; 05-15-2018 at 04:04 PM.
Dan Fahey is online now   Reply With Quote
Reply

Thread Tools
Display Modes

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 -5. The time now is 11:38 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright © Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.Ad Management plugin by RedTyger