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Carb'd 4.3 with 4L60E - issues

3.1K views 20 replies 8 participants last post by  BadS15v8  
#1 ·
Got my S10 on the street today with a 2114 and Holley 600. Problem is...4L60E won't shift. I originally got this B&M Tranny with 2800 stall to use with fuel injection but the fuel injection did not work out.

I would rather not spend the cash on a control unit if I don't have to. Is there any way I can still run this tranny with the carb. Cheaper the better...but I'm open to any and all suggestions. Thanks!

Ryan
 
#2 ·
well you could use the computer off of a truck with the tranny, but you will have to use some sensors to keep the computer "happy" but besides that i dont know i think someone was developing an aftermaket controller but u said no electronics.... so i think your kind of screwed
 
#3 ·
I've still got the stock computer...what sensors need to be plugged in to make the trans. happy?
 
#4 ·
anyone?
 
#5 · (Edited)
your not making the tranny happy but the main computer happy. sensors.... almost all of them but you dont have to hook the injectors up. everthing from the o2 to the tach wire, maf for sure cause thats how the main the computer shifts the tranny, and map. i dont thank you need knock sensor, but deffenitly the tps, probable no iat, but im sure there are more just dont know that many more mines a TBI <- its dumb = less sensors ..... You might as well try to find a 4l60 it is not computer controlled but does have electronic lockup( might want to look it up)
 
#6 ·
Its my understanding that you will also need the VSS. The trans will not upshift without a speed sensor.

I think your real trouble will be the TPS. You could fab something...

I think you are best off with an aftermarket controller. It could be done "at home" but would take some dedication to pull it off correctly on a carb... buy one or switch to a 4L60 or a 700r4 version. Getting rin of the "E" will help alot for carb'd vehicles.
 
#7 ·
well, throttle position sensor is virtually nonexistent now. I believe the VSS is still plugged in.

Would an aftermarket controller solve this problem? Could I wire it up with a carb and be alright?
If so, could you guys post some links to some? I'm not entirely sure what I'm looking for...

having to buy another tranny...not cool

Could I just put a damn floor shifter in this thing, shift if myself, and call it a day...or is that too easy of a solution?

Thanks a bunch!
 
#10 ·
4L80E Performance Transmission from PATC ,4L80E
The top of this page shows a 4lL80E that needs no electronics. Maybe they can tell you what needs to be done. But dont let it out weigh the cost of a 4L60/700R4.
And everyone scroll down the page at the "hydrocar"
 
#12 ·
Yea I'm thinking a new trans. is in order, for the money.

Local shop has a Turbo 350 with a long tail shaft that's got a street/strip kit in it for like 400 plus a 50 dollar core charge. Not a bad price...I can come up with a spare. I think I can also come up with a converter for like 200.

-may or may not have to mod. the driveshaft...
-may or may not have to mod. the crossmember or move it back...
-probably have to by a floor shifter and kickback

Is still probably cheaper than a controller and this tranny will likely not fail. I hear more about 700R4's and 4L60s blowing up than these.

Think this is a good route to go?
 
#14 ·
Think this is a good route to go?

No, its not a good route to go. Why not go with the th400? Its a much better trans than a th350 and they cost the same to build. 350 will do fine but it makes no sense to chose that trans over the 400.


New Driveshaft would run $100. Maybe cheaper depending on your area. Kickdown switch for gas pedal is easy to find for free/cheap. Moving xmember is pretty simple too if you can work with metal.
 
#15 ·
Since you're running a carb and a computer controlled trans you may need
a TCC lock up kit offered by B&M or TCI, etc. This way you can lock up
the trans with the flip of a swt..>

Torque Converter Lock up Kits - summitracing.com
Thats for the 700R4's, it's not a nessecity. many trucks run without the lock-up feature, it only locks the converter in 4th gear. The only thing to worry about on a 700R4 is the TV (Throttle Valve) cable. It's what controls all the shiting in the 700R4.
 
#16 · (Edited)
^^ The lock up fits both the 700r4 and the 4l60e. I didn't know it was just
for 4th gear though. Learn something new everyday. I do know how
important the TV cable is on a 700r4. If not set right...adios tranny.

Here's a page regarding electrics and the 4l60e. Maybe you'll see
something towards the bottom that might help.

TCI - ELECTRONICS: Control Systems For Your Electronic Automatic Transmission
 
#18 ·
^^ The lock up fits both the 700r4 and the 4l60e. I didn't know it was just
for 4th gear though. Learn something new everyday. I do know how
important the TV cable is on a 700r4. If not set right...adios tranny.

Here's a page regarding electrics and the 4l60e. Maybe you'll see
something towards the bottom that might help.

TCI - ELECTRONICS: Control Systems For Your Electronic Automatic Transmission
The 700R4 needs no sensor's or electrnoics to control it unlike to 4L60E. The 700R4 depends all on the TV Cable and thats it. The 4L60E has one plug just like the the 700R4 but it's for the shift solinoids and the lock-up, where as the 700R4's connector is for lock-up only nothing else, it's only three wires.
 
#17 ·
A local tranny shop told me today that the 4L60E would run if I wired up a throttle pos. sensor. It would have to be an aftermarket one (I bought it from Summit) that wires up and has like a rod that connects to the throttle on the carb. So, ultimately, if I'm thinking through this right, the gauge is like a rheostat...

But what I'm wondering is if this will be enough. It's from a 96 pickup...I don't know what changes year to year in terms of more electronics on these things. But the VSS would still be hooked up and so would the throttle position sensor, should I choose to go this route. The tech claimed that the MAF would not be an issue on this model of truck...I'm still a little tentative on that though...

What do you guys think?
 
#19 ·
The 700 can lockup in any gear but first. I ran a 700 and still have the hybrid converter(1/2 11" and 1/2 9.5"). I had a switch for the lockup, but found if I just left the switch on after I started the truck it was faster than locking up for only driving. As soon as I shifted second it would lockup. My tranny guy explained it to me.