T-400 Derby Car Tranny - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 04-03-2009, 04:35 AM
123pugsy's Avatar
HOT ROD...... FROM A CHRYSLER?
 
Last wiki edit: Metal shaping
Last journal entry: FLOOR BEADS
Last photo:
Join Date: Apr 2006
Location: Markham,ON
Age: 52
Posts: 2,332
Wiki Edits: 29

Thanks: 389
Thanked 242 Times in 212 Posts
T-400 Derby Car Tranny

I have a guy interested in a th400 for his derby car.
He says they run straight hydraulic fluid as that is cheaper than ATF....comments??

He says he needs only 1st and reverse.
Any insights on how to toughen this tranny up for this application?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-03-2009, 05:27 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
Keep it cool.

A derby car often has the radiator knocked out, a remote cooler w/fan would help- but an engine w/no rad. won't last anyway.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-03-2009, 06:45 AM
Crosley's Avatar
Hotrodders.com Moderator
 
Last wiki edit: T-350 rebuild tech
Last journal entry: Bar under the dash
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 8,057
Wiki Edits: 1659

Thanks: 314
Thanked 94 Times in 91 Posts
the transmission ATF is lite weight hydraulic fluid with several additives in it.

There should be no problems from the short use of the straight hydraulic oil
__________________
Some people are like Slinkies... Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-03-2009, 01:56 PM
fast68's Avatar
likes chevy trucks & boobies
 
Last photo:
Join Date: Oct 2005
Location: IL
Posts: 1,970
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
yep all trans or power steering fluid is is hydraulic oil anyways, just real thin.


hell i use motor oil for my p/s on all my daily drivers

have for almost two decades and never any trouble and it makes for a slicker easier steering big time, and it doesnt leak out like p/s fluid does, because its thicker.


i use p/s fluid for brake and clutch master fluid also,

same stuff, hydraulic,
got an 89 F250 5 speed out here right now i just pulled up in about 5 minutes ago and its got p/s fluid for the clutch master


ppl worry alot about fluid types etc

it does matter in some trannies though

such as fords and chryslers

alot more than any others


temp resistance and clutch pack disc materials, etc

good luck

Last edited by fast68; 04-03-2009 at 02:28 PM.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 04-04-2009, 08:10 AM
123pugsy's Avatar
HOT ROD...... FROM A CHRYSLER?
 
Last wiki edit: Metal shaping
Last journal entry: FLOOR BEADS
Last photo:
Join Date: Apr 2006
Location: Markham,ON
Age: 52
Posts: 2,332
Wiki Edits: 29

Thanks: 389
Thanked 242 Times in 212 Posts
A few more thoughts....

How about clutch pack clearances?
Should these be set up looser than stock recommendations?
Can I add frictions? Are the grooved friction better to use?
I noticed the 4l60e has steels with holes thru them. I am figuring that's for better lubrication?
Could I drill the steels on the th400 like those?

Thanks.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 04-04-2009, 09:36 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
For a derby car, you want reliability.

I'd keep it to the stock spec's AFA clutches/steels but use a good quality set. Looser clearances aren't wanted or needed, IMO. No extra holes, other than ones to help drain fluid from the clutch basket, if they're not there already..

A 34 element sprag and a tight converter (less heat) and you might consider boosting line pressure and/or shift kit might help transition quicker from reverse to low. Someone else might be able to say what would be needed to help with this.

I'd use a good, racing-type fluid if it were me. B&M and others sell high performance fluid that resists heat better than normal fluid.

I don't know what will happen if you were to use the hydraulic fluid on a daily driver, or switched from it to ATF. If the tranny is only gonna be used in a derby car, prob. moot point.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 06-11-2009, 08:09 AM
Registered User
 
Join Date: Jun 2009
Location: Rockford, IL
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
hydraulic oil in derby cars....you must replace all the plastic components internally w metal components or they will melt. the hyd oil takes longer to break down/heat up, but when it does, it is very hard to cool down. my guys who do run hyd i usually run water/ice coolers or big air to air hydraulic coolers out of skid loaders. you lose about 200rpm stall speed as well.

other things...leave out the center seal on the forward drum.....drill the rev port on the spacer plate just a bit, but not bigger than 7/64th's.

for 1st/rev only.....plug the direct/3rd gear port on the center support and remove the center seal of the direct clutch. esencially do the same thing as most people do to improve the 3rd gear shift except backwards. although it sounds pointless it actually slows the apply down slightly to keep the direct drum backing plate in one piece longer. the constant back and forth shifting just tears them right out...taking out reverse.

.005" of clearance per clutch disc works well...leave out the wavy steels they will just break. use an aluminum piston in the direct drum.

you must replace the 3rd gear accumulator w aluminum if it is plastic. when it breaks....and it will....you lose reverse.

there are numerous other things you can do for a derby tranny, especially for low 1-reverse only operation. pm me if you would like more details. thanx

Last edited by madbomber; 06-11-2009 at 08:22 AM.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 06-11-2009, 06:10 PM
123pugsy's Avatar
HOT ROD...... FROM A CHRYSLER?
 
Last wiki edit: Metal shaping
Last journal entry: FLOOR BEADS
Last photo:
Join Date: Apr 2006
Location: Markham,ON
Age: 52
Posts: 2,332
Wiki Edits: 29

Thanks: 389
Thanked 242 Times in 212 Posts
Sounds like some good advice.
We'll see what pops when it goes.
I sponsored the derby guy with this 400 and he'll
bring it back to me when it goes.
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
T-400 tranny fordss Transmission - Rearend 5 05-04-2012 02:31 AM
T-400 tranny slip strokin Transmission - Rearend 1 09-23-2011 04:44 PM
700 r4 88 gmc tranny- 400 turbo 87 gmc tranny ? limp'n-gmc Transmission - Rearend 6 02-15-2011 07:58 PM
tranny 350 or 400 heavychevy70 Engine 7 03-17-2005 04:28 PM
Derby Car - Need Some Help Mollard Engine 10 09-24-2004 09:04 PM


All times are GMT -6. The time now is 04:30 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.