Go Back   LS1TECH > CHASSIS, SUSPENSION, APPEARANCE > Automatic Transmission
Sign in using an external account
Register Forgot Password?
Search

Automatic Transmission
4L60E | 4L80E | TH350 | TH400 | TH2004R | Powerglide | Converters | Shift Kits
Sponsored by
PerformaBuilt Transmissions

Welcome to LS1Tech.com!
Welcome to LS1Tech.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join LS1Tech.com today!


Reply
 
Thread Tools Search this Thread
Old 03-21-2013, 08:36 PM   #1
Staging Lane
Garage is empty, add now
 
Trader Rating: 4
Join Date: Nov 2005
Location: San Francisco, CA
Posts: 87
Default 4L80e for road racing / Auto-X

I currently have a turbo LQ4/T56 in a 67 Camaro that was restored/modified with corners in mind, but it's by no means a dedicated road racer. I'm finding myself driving it on the street more than anything and am considering swapping to a 4L80e. While searching the internet, I came across a thread discussing the damage that can occur with TH350's and TH400's using 2nd gear engine braking. Something to do with a band wearing prematurely. 4L80's are a close cousin to the TH400, so I figured it might be plagued by the same issue.

My question: Will there be any ill effects from shifting a 4L80e manually when on a track for engine braking? I'm thinking maybe 2 or 3 track days a year. Any input related to a 4L80e and road racing would be appreciated. I don't have to make the swap, just feeling out what the trade-offs might be.
__________________
1967 Camaro - JY LQ4/4L80e, PT7675, TU1 cam.
tiznodd is offline   Reply With Quote
Old 03-22-2013, 12:18 AM   #2
LS1Tech Sponsor
Garage is empty, add now
 
Jake's Performance's Avatar
 
Trader Rating: 2
Join Date: Oct 2010
Posts: 1,470
Default

Not too much of an issue. The intermediate band is pretty small in a TH350 and TH400, slightly bigger in a later 4L80E. We use the late 4L80E band for any engine braking 80E or 400.
We also do some spragless stuff on the TH400 for extreme offroad combos.

For 2-3 times a year, don't sweat it. You may tune it for max line pressure at 0% throttle while competing and if/when it needs rebuild be sure to put the late band in it.
__________________
GM Racing Automatics from the company that designs the parts, not just another parts assembler.
www.jakesperformance.com
Jake's Performance is offline   Reply With Quote
Old 03-22-2013, 12:18 AM
LS1Tech
Pontiac Firebird




Paid Advertisement
Reply

Tags
4l80, 4l80e, automatic, autox, braking, corse, durability, engine, good, race, racing, raod, road, spragless, transmission


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 08:51 PM.


Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - JOBS
Emails & Contact Details