Transmissions and Drivetrain Need help with your trans? Problems with your axle?

700R4 - Late shifts, no fourth

Thread Tools
 
Search this Thread
 
Old 02-16-2010, 09:22 AM
  #1  
Junior Member

Thread Starter
 
dyed's Avatar
 
Join Date: Jul 2005
Location: Kansas
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
Car: 84 Z/28
Engine: 350
Transmission: 700R4 - rebuilt by me
Axle/Gears: 3.73 posi
700R4 - Late shifts, no fourth

Ok, have a freshly built 700, was working just fine for the first 2000 miles. Built it with a B&M transpak. Say what you will, but I've been happy and it was nowhere near harsh. Shifted just barely north of 2000 at part throttle and would hold till 5+ at full throttle, perfect for the 350 that was in it.

I got bored and built a new motor, and decided that while it was out would be a good time to drop the trans and put in a filter and some new fluid. Original fluid was Oreilly dexron junk, replaced with B&M Trick Shift. The swap took a lot longer than I anticipated, and the tranny sat for about a year. After finally getting everything back together, I drove it and it refused to shift until five grand. This was with the TV cable still in the original setting. After fiddling with the tv until there was no more adjustment and it had some visible slack at idle, it will knock of second and third at 3200. It will not go into overdrive.

My question is this, can the change in fluid alter the line pressure dramatically enough to cause the late shifting? Do I need to check out the governer? I'm really at a loss here.

Thanks,
David
Old 02-16-2010, 09:51 AM
  #2  
Supreme Member
iTrader: (2)
 
skirkland1980's Avatar
 
Join Date: Jul 2009
Location: morrow, ga
Posts: 1,354
Likes: 0
Received 4 Likes on 4 Posts
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: 700R4 - Late shifts, no fourth

sounds like the tv cable may have become detached inside the transmission or broke
Old 02-16-2010, 10:19 AM
  #3  
Junior Member

Thread Starter
 
dyed's Avatar
 
Join Date: Jul 2005
Location: Kansas
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
Car: 84 Z/28
Engine: 350
Transmission: 700R4 - rebuilt by me
Axle/Gears: 3.73 posi
Re: 700R4 - Late shifts, no fourth

As I understood it, a tv cable that was too loose would let it shift earlier? I'll get under there and take a look, but could you elaborate on that at all?

Thanks,
Dave
Old 02-16-2010, 10:49 AM
  #4  
Senior Member

 
John 89 Formula's Avatar
 
Join Date: Jul 1999
Location: Everett, MA . USA
Posts: 853
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 FORMULA FIREBIRD, 86 CHEVY CAMARO
Engine: L98, LB9 RESPECTIVLY
Transmission: 700 R4 (BOTH)
Re: 700R4 - Late shifts, no fourth

I had the same problem with my 89, wouldn't shift out of first untill 4000 rpm, turned out to be a bad governer.
Old 02-16-2010, 01:41 PM
  #5  
Supreme Member
iTrader: (2)
 
skirkland1980's Avatar
 
Join Date: Jul 2009
Location: morrow, ga
Posts: 1,354
Likes: 0
Received 4 Likes on 4 Posts
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: 700R4 - Late shifts, no fourth

you'll have to disconnect the tv cable at the transmission and see if it's still connected.
Old 02-16-2010, 02:10 PM
  #6  
Junior Member

Thread Starter
 
dyed's Avatar
 
Join Date: Jul 2005
Location: Kansas
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
Car: 84 Z/28
Engine: 350
Transmission: 700R4 - rebuilt by me
Axle/Gears: 3.73 posi
Re: 700R4 - Late shifts, no fourth

Ok, from what I've gathered so far, after I get off work I'm going to check the tv cable and the governer.
Thanks guys,
David
Old 02-16-2010, 02:39 PM
  #7  
Supreme Member

iTrader: (5)
 
I H8 WWD's Avatar
 
Join Date: Aug 2006
Location: Cleveland, Ohio
Posts: 2,491
Likes: 0
Received 5 Likes on 5 Posts
Car: 89' IROC-Z
Engine: LO3
Transmission: 700R4
Axle/Gears: 10-Bolt/2.73
Re: 700R4 - Late shifts, no fourth

Try adjusting it first before you decide to lift the car and such.
https://www.thirdgen.org/detent
Old 02-16-2010, 02:56 PM
  #8  
Junior Member

Thread Starter
 
dyed's Avatar
 
Join Date: Jul 2005
Location: Kansas
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
Car: 84 Z/28
Engine: 350
Transmission: 700R4 - rebuilt by me
Axle/Gears: 3.73 posi
Re: 700R4 - Late shifts, no fourth

Originally Posted by I H8 WWD
Try adjusting it first before you decide to lift the car and such.
https://www.thirdgen.org/detent
thanks, but i got it covered

After fiddling with the tv until there was no more adjustment
Old 02-16-2010, 07:28 PM
  #9  
Supreme Member

iTrader: (5)
 
I H8 WWD's Avatar
 
Join Date: Aug 2006
Location: Cleveland, Ohio
Posts: 2,491
Likes: 0
Received 5 Likes on 5 Posts
Car: 89' IROC-Z
Engine: LO3
Transmission: 700R4
Axle/Gears: 10-Bolt/2.73
Re: 700R4 - Late shifts, no fourth

Must have skimmed over it because it only said tv. Sorry. Does sound like you messed with your Television though if you read quick. Still picking up the abbreviated car lingo.
Old 02-17-2010, 07:37 AM
  #10  
Junior Member

Thread Starter
 
dyed's Avatar
 
Join Date: Jul 2005
Location: Kansas
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
Car: 84 Z/28
Engine: 350
Transmission: 700R4 - rebuilt by me
Axle/Gears: 3.73 posi
Re: 700R4 - Late shifts, no fourth

Ok, started ripping things apart...
TV cable fully attached and functioning. Governor opening and closing perfectly. Call made to the man who built it, and he suggested that when you tip them on their sides, the valves can sometimes just stick. Go drive it. Logged about twenty miles, and all is well.

Thanks guys,
Dave
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RyanJB
Members Firebirds
39
11-20-2018 03:30 PM
Zeek1041
Theoretical and Street Racing
12
09-30-2015 11:00 AM
junior419
TBI
12
09-22-2015 03:19 PM
HikoriYami
Transmissions and Drivetrain
2
09-21-2015 07:11 PM
TheTraut88
Engine/Drivetrain/Suspension Parts for Sale
1
09-07-2015 05:22 PM



Quick Reply: 700R4 - Late shifts, no fourth



All times are GMT -5. The time now is 03:10 PM.