1983 chev trans slips - 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 12-03-2006, 04:12 PM
Registered User
 
Join Date: Mar 2006
Location: minnesota
Posts: 176
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
1983 chev trans slips

I have a 1983 chev 1/2 ton 4x4 305 with auto OD trans.It shifts fine with the selector in the OD position.When it is moved to the 1,2, or D positions it slips like crazy and will hardly move. Put it in the OD position and it acts normal, Reverse works fine. Anyone have a clue as to what is wrong,thanks.DOUG

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 12-05-2006, 07:46 AM
Registered User
 
Join Date: Oct 2006
Location: VIRGINIA
Posts: 690
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
1983 chev trans slips

Doug this problem is somewhat of an anomaly. The overrun clutch is on in manual 1st,2nd,and 3rd. It is not applied in the D4 position,or in reverse.

A pressure gauge would help in the diagnois,but the symptoms point to major problems,inside trans.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-09-2006, 08:33 PM
Registered User
 
Join Date: Mar 2006
Location: minnesota
Posts: 176
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Anybody else?
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 12-09-2006, 09:33 PM
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: 8,099
Wiki Edits: 1659

Thanks: 340
Thanked 102 Times in 98 Posts
Quote:
Originally Posted by DougMN
Anybody else?

A pressure test would be the first item to check. As brisco pointed out this problem you describe is unusual. If there is a problem with the main line PSI it can indicate a serious internal problem.

A more common complaint is the 700/4L60 tranny will not move in the "OD" position on the shifter and will move when the shifter is in "D" or 2 or 1.

What is the history on this tranny?

Any Recent repair work on it?

What is the mileage & age if there is no recent repair/rebuild?

__________________
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
  #5 (permalink)  
Old 12-09-2006, 11:35 PM
GMCTRUCKS's Avatar
Registered User
 
Join Date: Dec 2006
Location: Texas, Coast
Age: 54
Posts: 326
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 5 Posts
Transmission

Add Lucas Trans Addivtive it fixed my transmission change oil then add I thought I was going to shell out $1800.00 dollars try it won't hurt.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 12-11-2006, 12:35 PM
Registered User
 
Join Date: Oct 2006
Location: VIRGINIA
Posts: 690
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
1983 chev trans slips

Or,you can take that money you were going to spend on the lucas and buy a pressure gauge.

I've been posting on this site for over two months now,when it comes to transmission issues,there is no one you would rather have answer your post than Crosley,and you've got him scratching his head. I'm no slouch either,but if you want some answers for this specific transmission concern we will need to see pressure readings. And Tony thats Briscoe with an e.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 12-11-2006, 05:11 PM
airworld2's Avatar
Member
 
Last photo:
Join Date: Mar 2003
Location: houston texas
Posts: 583
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
700

ok everyone here if you need answer's on most tranny questions for god sake buy a pressure gauge first, because thats tell us so much more. NOT
I'm not trying to be a smart *** but there are answer's you should be able to give without starting with check the pressure. most here are do it yourself guys and tools are kept to a minimum. I know you mean well and know your job but it just gets frustrating to see your answers the same way " get a pressure gauge and tell us the reading", I have had that line from so called tech guy's on the other end of the phone when I have had trouble before. I'll give you a guess to go with from years of my own mistakes and the fix maybe this. pressure gauge isn't the answer when all is with in spec's some times it old fashion seat of your pant guess work and
O J T .
I have been building a data base since 1989 on things I have found out the hard way, and all of them without a pressure gauge,700'S are a small part of what I work on and everyday brings something new.
__________________
airworld2

Last edited by airworld2; 12-12-2006 at 06:04 AM.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 12-11-2006, 06:55 PM
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: 8,099
Wiki Edits: 1659

Thanks: 340
Thanked 102 Times in 98 Posts
Quote:
Originally Posted by airworld2
ok everyone here if you need answer's on most tranny questions for god sake buy a pressure gauge first, because thats tell us so much more. NOT
I'm not trying to be a smart *** but there are answer's you should be able to give without starting with check the pressure. most here are do it yourself guys and tools are kept to a minimum. I know you mean well and know your job but it just gets frustrating to see your answers the same way " get a pressure gauge and tell us the reading", I have had that line from so called teach guy's on the other end of the phone when I have had trouble before. I'll give you a guess to go with from years of my own mistakes and the fix maybe this. pressure gauge isn't the answer when all is with in spec's some times it old fashion seat of your pant guess work and
O J T .
I have been building a data base since 1989 on things I have found out the hard way, and all of them without a pressure gauge,700'S are a small part of what I work on and everyday brings something new.

OK....... a gauge reading is unneeded here.

i do not see any suggestions for the fellow's problem from you.

As I posted it is more common for the trans to not move in "OD" , then move forward in "D". this would indicate a problem in the forward sprag.

IF the trans did not move forward in "OD" or "D" or 2....... but it would move in "1" .... that would indicate a problem in the low/reverse roller clutch area in the center support...

Since the fellow states the trans works well in "OD" , but slips in "D" , 2 & 1 ....... where is the problem?

IT would seem a pressure problem may show up... yet on the flip side the rotor / vane pump is good at covering up a pressure loss problem in the trans. This possibly could be difficult to read without a cooler line pressure reading.

As I am sure you know IF there is a pressure loss/drop that the pump is covering up , the cooler line pressure and flow drop waaaay off.


That is also the reason I asked for a history on the tranny...


__________________
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
  #9 (permalink)  
Old 12-11-2006, 07:24 PM
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: 8,099
Wiki Edits: 1659

Thanks: 340
Thanked 102 Times in 98 Posts
Quote:
Originally Posted by briscoe
Or,you can take that money you were going to spend on the lucas and buy a pressure gauge.

I've been posting on this site for over two months now,when it comes to transmission issues,there is no one you would rather have answer your post than Crosley,and you've got him scratching his head. I'm no slouch either,but if you want some answers for this specific transmission concern we will need to see pressure readings. And Tony thats Briscoe with an e.

yer lucky I got most of the letters in


__________________
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
  #10 (permalink)  
Old 12-12-2006, 06:19 AM
airworld2's Avatar
Member
 
Last photo:
Join Date: Mar 2003
Location: houston texas
Posts: 583
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
700

yea I didn't post idea but there is more to this story, I feel that someone has tried to rebuild and has placed mis match parts here. pump stator and pump face would be my first guess, this would cause a cross leak when you use over run plates. wrong stator shaft installed in stator half = holes not lined up, cross leaks.
was fluid burnt , anything after that is guessing.
__________________
airworld2
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 12-12-2006, 09:35 AM
Registered User
 
Join Date: Oct 2006
Location: VIRGINIA
Posts: 690
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
1983 chev trans slips

Doug,can you give us a little more info to go on?

Since we are just guessing here.... If you built trans,and "mis matched" pumps,these are some of the possibilities. Your trans is an early unit,small shaft. Your pump stator[side with stator shaft] should have a 7/32 air bleed,top right,drainback hole lower left. There is no casting in either the pump body or the pump stator on the early pumps to block mainline pressure to this hole,so GM put a plug there.

No problem early to early halves. You do need to know this though They put a casting on the later halves,but left the hole open[unplugged].

You can match the later pump body to the early pump stator,because the hole is plugged,in the stator.

But Doug, if you matched your early pump body,no casting,to a later pump stator,which has an open hole,this is a problem.

The good news is you won't need a gauge. The bad news is,this would be a major mainline pressure leak. More good news,you did'nt do this.

If you did "mis match" pumps this way,the leak would be so severe you would have a problem in every range,including OD position,again no need for a gauge here.

Maybe you pressed the stator shaft from the stator half,then pressed it into another stator half,"because your half was bad". Then suppose you pressed it together,but you didn"t line up the holes. More good news,you didn't do this either. How would you have bolted it[stator shaft] to the stator half.

I'm finished guessing now,to many possibilities.
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 12-12-2006, 04:46 PM
airworld2's Avatar
Member
 
Last photo:
Join Date: Mar 2003
Location: houston texas
Posts: 583
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
700

well this post is way off the base question, but lets continue
you can remove the old stator shaft then pin from stator face use valve body bolts to line up stator shaft press new shaft in, the replacement shaft aftermarket has elongated holes to ensure correct feed to stator face for different years inter change.
I can state with no fear I have made mistake's interchanging parts trail and error. but those who do not try cant say that wont work, I can tell you what I have found to work. good builder's go beyond what the book states fits interchange is trail and error and time behind the builders table is knowledge. guess work thats what we are here for no hands on or real test drive here ,with years of doing transmission repair I get questions over the phone all the time whats wrong with my car. most the time I have seen the problem before and can tell them what my idea is but I cant fix it over the phone.
__________________
airworld2
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 12-12-2006, 06:30 PM
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: 8,099
Wiki Edits: 1659

Thanks: 340
Thanked 102 Times in 98 Posts
Quote:
Originally Posted by airworld2
well this post is way off the base question, but lets continue
you can remove the old stator shaft then pin from stator face use valve body bolts to line up stator shaft press new shaft in, the replacement shaft aftermarket has elongated holes to ensure correct feed to stator face for different years inter change.
I can state with no fear I have made mistake's interchanging parts trail and error. but those who do not try cant say that wont work, I can tell you what I have found to work. good builder's go beyond what the book states fits interchange is trail and error and time behind the builders table is knowledge. guess work thats what we are here for no hands on or real test drive here ,with years of doing transmission repair I get questions over the phone all the time whats wrong with my car. most the time I have seen the problem before and can tell them what my idea is but I cant fix it over the phone.
hence my question on the history of the trans in this thread.... With a tranny that is 2 decades old , who knows what has been done to it.

I receive email every day with questions on trannys. Some questions i can answer , some I can not.


Some days I think there is 'voo doo' to these automatic trannys.... although I have been told there is not.


__________________
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
  #14 (permalink)  
Old 12-12-2006, 07:06 PM
Registered User
 
Join Date: Oct 2006
Location: VIRGINIA
Posts: 690
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
1983 chev trans slips

When I was a young builder,mid 1980's,I put a big shaft pump in a small shaft 700....in a state police car. The trooper brought it back complaining of a vibration.

My boss asked me[told me] to go for a roadtest with the trooper,so we did.

The vibration was most noticeable at 120 mph! No lie.

Coolest roadtest I've ever been on.

Yes we all make mistakes,but if we post here to help,we need to be as informed as possible. Our mistakes,thru our suggestions,can be a real big hassle to who ever uses our advice.

You can never ask enough questions,you can never be too informed.

Sure wish Doug would post back,I think our fighting scared him away

And yes,after 30 years of doing transmissions,I'm convinced about the "voo doo" thing.

Last edited by briscoe; 12-13-2006 at 02:02 PM. Reason: spelling.....again
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 12-14-2006, 02:49 PM
Registered User
 
Join Date: Mar 2006
Location: minnesota
Posts: 176
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Now the trans slips in OD just like in all the other forward gears,DOUG
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
Jegs 350t trans..... No good!!!!!! tiresmoke55 Transmission - Rearend 15 08-11-2006 11:24 PM
727 Torque Flight trans problems Steves66 Transmission - Rearend 5 06-30-2006 04:11 AM
36 Chev Hot Rod Brake System 36Chev Suspension - Brakes - Steering 8 02-15-2006 12:39 PM
350 4x4 trans to 700R4 2x4 trans swap??? punk1c5040 Transmission - Rearend 1 02-01-2004 11:14 AM
305 Chev looking for flat 14's nicefrog Engine 2 12-04-2002 06:16 AM


All times are GMT -6. The time now is 09:56 PM.


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.