700R4 to 4L60
Thread Starter
Burning Brakes
Joined: Feb 2010
Posts: 1,013
Likes: 2
From: California City Ca
700R4 to 4L60
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It's starting to look like I need to get anouther trans again.
I had my 700r4 rebuilt from a local shop and they screwd it up this the sencond time.
I dont want them touching my car ever again thats anouther story.
But If I have to replace it again I just buy a whole new one outright.
I heard the 4L60 is stronger than the 700r4 so If I am going to spend the money might as well look into this.
Is this swap worth it what do I need to change to do this as in the wiring will the computer on my1986 Vett work if not what do I need to get it to work.
Like i said the 700r4 I have now should have all the good stuff init now but the shop which did it who knows what they realy did or didnt do inside the trans.
I not pushing alot of power but it not stock either 365 HP and 465 TQ the 700r4 work good as long you dont put you foot in it if your on the gas hard it slips between ****s it go's from 3500/4000 then shifts but at the same time it will spin the motor up to 6000 RPMs like some one pushes the clucth in and not letting off the gas doing so.
I know thers plces that say they make a 700r4 that can handle HP and TQ but if going to buy a new one might as well get the best bang for the buck.
It's starting to look like I need to get anouther trans again.
I had my 700r4 rebuilt from a local shop and they screwd it up this the sencond time.
I dont want them touching my car ever again thats anouther story.
But If I have to replace it again I just buy a whole new one outright.
I heard the 4L60 is stronger than the 700r4 so If I am going to spend the money might as well look into this.
Is this swap worth it what do I need to change to do this as in the wiring will the computer on my1986 Vett work if not what do I need to get it to work.
Like i said the 700r4 I have now should have all the good stuff init now but the shop which did it who knows what they realy did or didnt do inside the trans.
I not pushing alot of power but it not stock either 365 HP and 465 TQ the 700r4 work good as long you dont put you foot in it if your on the gas hard it slips between ****s it go's from 3500/4000 then shifts but at the same time it will spin the motor up to 6000 RPMs like some one pushes the clucth in and not letting off the gas doing so.
I know thers plces that say they make a 700r4 that can handle HP and TQ but if going to buy a new one might as well get the best bang for the buck.
Corvette Enthusiast
Joined: Oct 2007
Posts: 6,797
Likes: 2,721
From: So. Cal.
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Instead of spending 2 grand on a new one, why dont you open the 700 up and see what the problem is. Fix it yourself and re install it? I may be wrong here, but are you sure your ECM will work with the 460Electric. Did you have your TV cable ajusted properly from the get go? I have heard improperly ajusted TV cables can smoke a new tranny.
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It's starting to look like I need to get anouther trans again.
I had my 700r4 rebuilt from a local shop and they screwd it up this the sencond time.
I dont want them touching my car ever again thats anouther story.
But If I have to replace it again I just buy a whole new one outright.
I heard the 4L60 is stronger than the 700r4 so If I am going to spend the money might as well look into this.
Is this swap worth it what do I need to change to do this as in the wiring will the computer on my1986 Vett work if not what do I need to get it to work.
Like i said the 700r4 I have now should have all the good stuff init now but the shop which did it who knows what they realy did or didnt do inside the trans.
I not pushing alot of power but it not stock either 365 HP and 465 TQ the 700r4 work good as long you dont put you foot in it if your on the gas hard it slips between ****s it go's from 3500/4000 then shifts but at the same time it will spin the motor up to 6000 RPMs like some one pushes the clucth in and not letting off the gas doing so.
I know thers plces that say they make a 700r4 that can handle HP and TQ but if going to buy a new one might as well get the best bang for the buck.
It's starting to look like I need to get anouther trans again.
I had my 700r4 rebuilt from a local shop and they screwd it up this the sencond time.
I dont want them touching my car ever again thats anouther story.
But If I have to replace it again I just buy a whole new one outright.
I heard the 4L60 is stronger than the 700r4 so If I am going to spend the money might as well look into this.
Is this swap worth it what do I need to change to do this as in the wiring will the computer on my1986 Vett work if not what do I need to get it to work.
Like i said the 700r4 I have now should have all the good stuff init now but the shop which did it who knows what they realy did or didnt do inside the trans.
I not pushing alot of power but it not stock either 365 HP and 465 TQ the 700r4 work good as long you dont put you foot in it if your on the gas hard it slips between ****s it go's from 3500/4000 then shifts but at the same time it will spin the motor up to 6000 RPMs like some one pushes the clucth in and not letting off the gas doing so.
I know thers plces that say they make a 700r4 that can handle HP and TQ but if going to buy a new one might as well get the best bang for the buck.
Last edited by CorvetteMike2024; Feb 7, 2011 at 06:08 AM.
Racer
Joined: Jul 2010
Posts: 308
Likes: 2
From: Kansas City MO
The 700R4 was simply renamed 4L60 when GM went to the standardized transmission naming convention (note no "E" at the end - the 4L60E is an electronically controlled valve body that needs a computer to shift it from gear to gear...)
Most consider the 89-93 4L60/700R4 trans to be the best of the cores to start with - it has the upgraded 30 spline input shaft (86-up improvement IIRC), the auxilary valvebody to fix some shift issues (87-up?) and revised TCC oil circuit (89-up), as well as some other minor changes...
If it was working just fine and now it's flaring between shifting it sounds like trash in the valvebody or a sticky valve. I'd have the valvebody dropped, cleaned and inspected by a good tech, and then a good shift kit like a TransGo installed and see if that corrects the shift flare.
Most consider the 89-93 4L60/700R4 trans to be the best of the cores to start with - it has the upgraded 30 spline input shaft (86-up improvement IIRC), the auxilary valvebody to fix some shift issues (87-up?) and revised TCC oil circuit (89-up), as well as some other minor changes...
If it was working just fine and now it's flaring between shifting it sounds like trash in the valvebody or a sticky valve. I'd have the valvebody dropped, cleaned and inspected by a good tech, and then a good shift kit like a TransGo installed and see if that corrects the shift flare.
Thread Starter
Burning Brakes
Joined: Feb 2010
Posts: 1,013
Likes: 2
From: California City Ca
For the money it looks like I stick with the 700r4 thanks everyone.
I am goning to have the trans looked at by anouther shop and see if is something simple to fix before I buy a new trans.
I am goning to have the trans looked at by anouther shop and see if is something simple to fix before I buy a new trans.
