I will be swaping my 4l60 for a 700r . My queston is can I get my computer to control the lockup TC or will I have to control it someother way?


Thanks

 

If you have a 94 it is a 4L60E, why swap BACKWARDS to a 700r4? Why not keep the better transmission and let the pcm from the LS1 you are installing control it?

People think the 700r4 is stronger but fact is it was installed behind weaker engines and most shops will messup a 4L60E worse than they do a 700r4, BUT the hardparts are interchangable and any good 700R4 build will include using updated 4L60E parts.

 

I'm confused. Why not just use a 4L60E that is for an LS1?

 

Aside from the inability for it to be computer controlled and the durability/reliability issues associated with them, I don't think you can even use one with an LS1 because as far as I know, there are no LS1 throttle cable brackets and linkages that will accomodate the throttle valve cable (TV cable) for the 700R4. I mean I'm not saying that such a thing doesn't exist, but I've never seen any.

 

OK sorry guys.
I dont have the 94 car That I was swaping anymore I need to change my signature.
I have a 94 z28. The 4l60 in it out of a s-10 and it. And its not doing so well. I was just going to use the 700r till I can get the right trans to put in it. I've got a lot going on with changing jobs moving etc. to be spending a lot of time on this car right now.

 

Intresting. If I understand correctly yes you could use a 700r, it's what you already have anyways if you have a 4l60. It's the same tranny, different name. Not very strong trannies but I'm sure it'll last, depending on your setup. What happened to the stock 94 tranny you had before you started all the swapping?

 

I have a 4L60 now but it has a 17 pin plug and the 700r has a 4 pin plug. I guess my queston is how do I wire it to lock the T/C

 

no you have a 4L60E tranny now... the 4L60=700R4.... there are aftermarket kits available to hook it up manually...

 

I bought the car with the S10 trans in it. I was just wanting to know if I could use my ECM to lock the T/C up insted of buying an aftermarket unit to do it its only going be in there the rest of the summer.

 

I put a 700r in my 95 z28 but rebuilt it to be a full manual and it works great I'm pushing 335rwhp and haven't had a prob yet but if you do it I would convert it to full manual.....

 

how was you getting the converter to lock up?

 

What transmission crossmember did you use. I had a T-56 before I started my conversion and I would like to know what crossmember to use. I think I just need to get one from a 4L60E car, but I want to make sure first.

 

or you could find a cross member from a 93 car.... actually i think i still have mine in the garage.. the only thing is that its notched out for my old exhaust setup... if you interested in it... PM me and i will get some pics...

 

I bought the car like this.

 

I am running a full manual 700r4 in a 94 Formula that was originally a T56 car.
To control lockup I went with a manual lockup switch.

for those that say the 700 is weak...I beg to differ.

 

its the same as a 4l60. what makes it not weak in your opinion?

 

Built right and it can be strong. My builder built mine for my application plus gave me a good warrenty on it.

I was going to go with a Turbo 350 but I really wanted the 4th gear, because I'm still going to drive it on the highway some.

 

That's the million dollar argument. Some say if built right it can hold xxxrwhp while most say it doesnt matter how well it's built, it'll still blow. Then I also read that most built 4l60's are reliable up to 500rwhp. After that other options must be entertained. So in the end I have no clue who's right or wrong. I must mention I burnt my built 4l60e in no time. I never posted about it because I didnt want any issues or point any fingers. My dream would be to have a th350 with the gear vendors unit but I can see a 4l80e in my future. Wish they werent so heavy.

 

Mine was buillt by John Goebel...the problem most people run into with the 700r4/4L60/4L60E is burning the 3/4 clutch packs in high HP applications.
John corrects this by building his own front pump and fluid control. The normal 4L60 unit has variable fluid flow and pressure, mine has constant pressure constant fluid flow modeled after the powerglide. I am running an easy 700+ hp, that is how I can say it is not weak.

He has had one of his trannies in a 700rwhp blown Z28, a solid roller LT1 on a 400 shot, and a stroked, 300 shot LS1. I am not a one man testimony

 

Well you guys are doing better than most. For every success story like this there are 2 that fail. Wish he could come bless my vette.