***NOTICE*** I am NOT in a good mood right now, if you do NOT know the answers I need, or do not have an intelligent opinion based on facts, PLEASE do not reply to this. I need answers and ideas, not what some magazine said somewhere that your buddy read.. if you list "Mobil 1 Oil Filter" as a performance mod, do NOT reply to this.

ok.. I have a 93 Trans Am. The engine is from a 94 Z28 and runs properly at this time. The Transmission is a 700R4 from unknown origins. It is NOT an F-Body 700R4. The Speedo cable assembly from the 93 harness will NOT plug into the tranny. No problem, I will get a hand held GPS for that.

I am running the stock converter from a 95 Impalla SS, which was a 4L60E tranny. The converter bolted up with mo visible problems.

when we attempt to put the car into gear nothing happens. raising the RPM's does nothing. Nothing happens at all n the tranny. I noticed there is a Square 4 wire connector on the transmission, I have a 5 wire, round connector that used to plug into the stock tranny at one time,. Does the 700R4 require an electrical connection? If so, can an adapter be made to mate the 4 square and 5 round connectors? what would the pin outs be?

also.. CAN the converter from a 4L60E be used in a 4L60 or 700R4 case? are the input shafts the same? It seems the converter isnt linking up with the tranny. The transmission is freshly rebuild so I an not suspecting the tranmission at this time.

Ideas? troubleshooting ideas?

Anxiously waiting..

------------------
Robert Wink
Admin http://www.badrap.net
Tampa Bay's Largest Domestic Drag Race Club!

1993 Pontiac Trans Am, LT1 Vortech S-Trim W/ Aftercooler
2001 Ford F-150 5.4L V8
1980 Ford Bronco 4X4 351W

 

Thanks Ryan..

I am wondering if the Input shaft is not mating with the 4L60E converter.. the shifting of the tranny seems flawless..

 

The 700r4 came with two different input shaft spline sizes. The first units thru 1985 or so used the older, smaller input shaft which shared the same torque converter with the 2004r tranny's. Beginning in the mid 80's and up, all 700r4's, 4L60's, and 4L60-E tranny's used the same spline input shaft (which was larger than the 2004r's). It is possible that you could have gotten an early 700r4 and the torque converter from the '95 unit might go on, but the input splines will not engage. For details on how to identify the trans you have, goto: http://dtcc.cz28.com/3ddd/index.htm and call or email for info. Their hours are monday thru friday, 8-5.

The electrical connector on the side is for the torque converter clutch electrical connection and trans gear signals for the ecm. You don't need this plugged in for trans operation, but most 700r4's need to have the torque converter clutch engaged during highway use to get lube to the rear planetary gear set. There are trans kits available to solve this problem. The 5-wire connector present on your car differs from the 4-wire version in that there is an additional gear switch in the 4L60 than in the 700r4. Other than that, the transmissions are practically identical. In any event get ahold of my friend at the link above and he can help you identify your problem. Good luck.

------------------
1987 Trans Am GTA WS6
5.7L SuperRam
4L60-E Trans
3.73 SRD

1987 Pontiac Fiero
3800 Series II SFI
4T60-E Trans
3.33 Final Drive

1987 Chevy S-10 Ext. Cab
4.3L Vortec TBI
4L60-E Trans
3.42 Final Drive

1966 Plymouth Belvedere II
318 Semi-Hemi 2bbl
Torqueflite 727 Trans

http://dtcc.cz28.com

 

Hey big guy! Long time no see!

I would bet you got a 27 spline Trans there, not the best choice by far but usable with correct convertor.

Shoot me a E-mail

------------------
Ellis
Team Captain
Team North West F-Body
www.teamnwfbody.org

 

Fantastic info guys! thank you all so much.

I will determine which tranny I have and go from there.

keep checking tho I will probably come back with more questions on this little problem.

 

Heya Ellis! tell Steph I said HI!

I think I am going to try and take this tranny out, and use it in an old GMC 4X4 I have.. it needs a 700R4 badly , the one in it is shot.

have a friend with an IROC, with a TCI 700R4, with TCI Converter.. probably just not bother trying to fix a 27 spline tranny,. when for $250 I can get a complete tranny and converter.

ICQ me some time ellis

 

Hey Robert,

I know this may sound like a simple answer, but are you absolutely sure you engaged all the splines in the tranny to the converter?

It's easy to miss if you're not careful. There should be distinct clicks as they engage.

By the way, the stock Impala converter is only 1300 stall.

------------------
SSMOKEM

1995 Impala SS "Cherry Bomb"
Best ETs: faster than my '65 pickup
Mods: 93% stock

My Super Impala SS Website

 

Hey george long time, no see.

To be honest, I do not remember any "Clicks" when mounting the tranny. We placed the engine on the Kframe outside the car, then attached the tranny, before we put the drivetrain back into the car.

I was have to ask marty if he remembers any "clicks" but the tranny went in easy enough. We had a converter that came with the tranny, but when we went to install it, the center hub had a large crack in it, so having no other converter, we used your old one from the 4L60E..

wanna swap back that TH400? LOL

 

Sorry about that

Just had it rebuilt for $300 !! Best thing since sliced bread.

------------------
SSMOKEM

1995 Impala SS "Cherry Bomb"
Best ETs: faster than my '65 pickup
Mods: 93% stock

My Super Impala SS Website

 

The 4L60E converter will not work with the 700R4.

------------------
'93 Camaro Z28 Automatic with a ZL1 hood.
No bottle.
No blower.
383 cubic inch serving of horsepower...hold the rice please.
Thats all you need to know.
ICQ: 23984221
Gripenfelter's Homepage

Disclaimer: The opinions expressed by me are not necessarily supported or indicative of the Government of Canada or any other Federal Employee.

 

Why not? Are you referring to the 95-up 4L60-E tranny's that had PWM lockup converters that had a carbon fiber clutch instead of a paper one? You can use the carbon fiber lockup converter on a non-PWM trans--be it a 700r4 or an early 4L60-E. You cannot use a paper lockup clutch converter on a PWM 4L60-E trans because the paper facing was not designed to slip which the PWM was designed to do. Using a torque converter with a paper lockup clutch on a PWM TCC equipped trans (at least for the RWD tranny's) will result in premature TCC failure.

It should be noted that the carbon fiber facing does not have as much holding power as a paper one but does not burn up, is more durable, and has a "harder" tcc apply feel on a non PWM trans. I will also say that I have used this carbon fiber clutch converter for several years behind a non-PWM TCC trans and have never had a problem with it.



[This message has been edited by MadMax350 (edited August 01, 2002).]

 

If it were a 27 spline tranny you would not have gotten ot on far enought to bold down (except extremely tight), My best advise would be to find a 93 core to rebuild and sell the one you have, that way its a straightforward swap, also the 93s used a different switch on the converter lock-up, the 93s are normally closed open to energize (or is it the other way around) needless to say its different. I tried to put a 90 tranny in my 93 and had to replace the lock-up switch and do some wire butchering to get it to work, The VSS will come out of a 93 and go right into the older tranny, so no need for splicing etc there. You can get a good core for anywhere from 300 to 600 $ and then rebuild it for 150 to 350 $ (a freind or yourself), so if you sell your old one for 5 to 600$ you will still be in pretty good shape. If youre doing a HP job then upgrade the sucker while youre doing it. Oh yeah it may not be moving because you havent enought fluid in it or your converter isnt engaged to the pump or there is excessive play in your clutches, or the selector valve inside isnt hooked up to the linkage properly.
Perry

[This message has been edited by Perry93TransAm (edited August 01, 2002).]

 

My first guess is someone didnt install the filter (Drop the pan and check!). Or, as stated it has a the early 27 spline shaft, but this is less likley (The converter would flop around on the small shaft and would be noticable to most).

4l60 converters work fine on 700s, but you dont want to do the oppisite if you dont FIX the PWM problem on the 95+ trans.. Once this is done, there fully interchangable.

EDIT: One more thing, an IMP converter is probably the worst converter for an fbody. It will have NO stall. Grab yourself an s10 converter, and youll get a cheap 2600-300 stall!!

[This message has been edited by blown95ta (edited August 04, 2002).]

 

Thanks guys! I have used a lot of this advice and have decided to ditch the whole thing.

Just made a deal with a member here to buy a complete 93 Tranny with converter.. so my speedo hookup, tranny mounts and everything else will work properly, and no BS to worry with.

I may still look for an S10 converter tho, since I can't afford a vig 2800 right now

 

when i rebuilt my 700 i missplaced one of the checkballs and mine did the same thing? did the shop where it was built @ check all the valves and everything with air before giveing it back to you? They ran some air though a hole somewhere and found out right away.