4l60e + carb engine

[Sick5]

i have tbi engine and tranny from a 97 tahoe still in the tahoe. Im going to be parting it out and im trying to keep what i need.
I will replace the dizzy. new wires and throw a 650 eldb. on it. problem im having is with the tranny. is thier any way to get that going with out spending 1000 dollars. ive read post on other furom about using the tps on the carb but for a holley! i have the tahoe here and havent started tearing it apart yet and want to make sure i get all i can..

[storm9c1]

Not sure how well the trans will work with the stock PCM and the deleted engine management components. I'll let someone else confirm that. But I've always used aftermarket controllers on carb setups. And the prices on those have come down to the $500-$600 range.

That being said, yes, I only know about the Holley bolt-on TPS (use them myself). There is another version for other carbs that connects to the throttle linkage. They are usually called "remote tps". Search Jegs or Summit. It'll come up. Expensive though.

Other alternatives (expensive too):
http://www.hgmelectronics.com/produc...ion-sensor-kit

This is clever (terrible presentation but good idea):

How to Mount a Throttle Position Sensor on an...

[Sick5]

thank you

[Sick5]

http://www.gmfullsize.com/forum/showthread.php?t=145089

[storm9c1]

Originally Posted by Sick5

http://www.gmfullsize.com/forum/showthread.php?t=145089

I figured the PCM might work with a reflash. But stock, I didn't think so.

[Sick5]

http://www.gmfullsize.com/forum/showthread.php?t=145089

check this one out

[storm9c1]

Originally Posted by Sick5

http://www.gmfullsize.com/forum/showthread.php?t=145089

check this one out

Wrong link? Because it's the same one as posted above. He made it clear that while he is using the stock PCM, he is not using the stock program.

[Sick5]

He was complaining about the stock pcm controlling his gauges not the transmission.

[storm9c1]

Originally Posted by Sick5

He was complaining about the stock pcm controlling his gauges not the transmission.

Even so, I think the concern would be without the engine sensors working, would the PCM go into "limp" mode, thus causing the trans to not shift properly? I think more research (or others chiming in) is required. I know you really want to hear that it will JustWork, but I have reason to believe that it won't be that easy.

If no one else chimes in, looks like you need to give it a shot and report back.

EDIT: found this: http://www.s10forum.com/forum/f10/ho...-4l60e-461481/
And this: http://www.fullsizechevy.com/forum/g...e-control.html

Sounds promising. Good luck.

[Sick5]

True!

[clinebarger]

A '97 Tahoe will have a CSFI Vortec 5.7L, Not a TBI.

[Sick5]

Originally Posted by clinebarger

A '97 Tahoe will have a CSFI Vortec 5.7L, Not a TBI.

What is csfi?

[Captainfab]

Central Sequential Fuel Injection. That's what the L31 Vortec 350's had for the fuel injection system.

Originally Posted by Sick5

What is csfi?

I have heard of guys building their own trans controllers by using a '94-'95 TBI PCM, along with a few other components, but there is some work invollved and a learning curve.

http://mattw.dyndns.org/4L80E/

[Sick5]

thanks captin

[clinebarger]

Originally Posted by Sick5

What is csfi?

What Captain said!

You can make the '97 PCM work with a few more input's than a TBI PCM (MAP sensor, CTS, RPM, TPS, VSS), Having the PCM custom tuned is highly recommended.
With a little more work.....You can just run the Fuel Injection, The CSFI intake is ugly, A RamJet intake is a bolt in deal with wiring mods.

If your dead-set on a carb set-up....Have your 700R4 built with the money selling the 4L60E & what money you spend on getting the "E" shifting & a working speedometer.....Just my opinion.

[Sick5]

Clinebarger
In not set in carb just thought that was easiest way to go.
Just need some more info on what to do? I have no idea about any FI.. Point me to the right doriction ..

[Bigdav160]

I think clinebarger is recommending, and I agree, is something like an Edelbrock Pro Flo Intake. Add an eBay throttle body and injector set and you can have a reliable setup for only a little more money than a convoluted carb setup.

edit: Looks like you can get into a Stealth Ram manifold for a little less green.

[Captainfab]

I agree that either the Edelbrock Pro Flo or Holley Stealth Ram would be a big improvement, but I think the OP just looking for a nice reliable driver. In that case I believe the factory injection should work fine.

Sick5, You could run that Vortec 350 with the original injection, and also control the trans at the same time for not much more than controlling just the trans. Basically what you would need to do is have the original wire harness reworked as a standalone harness, have the PCM reflashed, and add a electric fuel pump that will supply the correct psi for the Vortec injection and a return line. If you don't have the factory harness, I believe you can still get aftermarket harnesses.

[Bigdav160]

The OP says he has the whole truck. You're right. The cheapest method would be to keep the '97 drivetrain complete. Although the intake gasket is likely leaking and the plastic injector poppets are stuck .

The harness is not that bad to cut down but would be intimidating to a beginner.

I think time and money spent buying a carb, intake, distributor and trying to make that work with an electric trans/module doesn't make much sense.

[Sick5]

Originally Posted by clinebarger

What Captain said!

You can make the '97 PCM work with a few more input's than a TBI PCM (MAP sensor, CTS, RPM, TPS, VSS), Having the PCM custom tuned is highly recommended.
With a little more work.....You can just run the Fuel Injection, The CSFI intake is ugly, A RamJet intake is a bolt in deal with wiring mods.

If your dead-set on a carb set-up....Have your 700R4 built with the money selling the 4L60E & what money you spend on getting the "E" shifting & a working speedometer.....Just my opinion.

Thanks
I'm not set carb. I just want yo do what's best for me and my wallet. My truck is a daily driver. Ram jet sounds good. But I don't know anything about the mods I would have to do. Or who can tune the pcm

[Sick5]

Originally Posted by Captainfab

I agree that either the Edelbrock Pro Flo or Holley Stealth Ram would be a big improvement, but I think the OP just looking for a nice reliable driver. In that case I believe the factory injection should work fine.

Sick5, You could run that Vortec 350 with the original injection, and also control the trans at the same time for not much more than controlling just the trans. Basically what you would need to do is have the original wire harness reworked as a standalone harness, have the PCM reflashed, and add a electric fuel pump that will supply the correct psi for the Vortec injection and a return line. If you don't have the factory harness, I believe you can still get aftermarket harnesses.

I have the complete Tahoe running just have an issue with tags. So I'm parting it out and taking what I need.

[clinebarger]

Originally Posted by Sick5

Thanks
I'm not set carb. I just want yo do what's best for me and my wallet. My truck is a daily driver. Ram jet sounds good. But I don't know anything about the mods I would have to do. Or who can tune the pcm

Originally Posted by Sick5

Clinebarger
In not set in carb just thought that was easiest way to go.
Just need some more info on what to do? I have no idea about any FI.. Point me to the right direction ..

Carbing the Vortec & Having your 700R4 built is the "Easiest way"

I would go fuel injection, The PCM doesn't have to be tuned, A VATS box will disable anti-theft http://www.summitracing.com/parts/pr...ions/year/1997. Get some custom tuning later....After the swap is done & kinks worked out.

For entry level swappers....Leave the harness on the engine, Use the underhood fuse box that's in the Tahoe. I will go over this in detail if you go this route. It's easy!

You will need a high pressure fuel system, The LS forum is full of threads on this.

A Ram-Jet manifold is an easy upgrade, Wiring harness mods are required & you need & 8 EV1 injector connectors.

[Sick5]

Originally Posted by clinebarger

Carbing the Vortec & Having your 700R4 built is the "Easiest way"

I would go fuel injection, The PCM doesn't have to be tuned, A VATS box will disable anti-theft http://www.summitracing.com/parts/pr...ions/year/1997. Get some custom tuning later....After the swap is done & kinks worked out.

For entry level swappers....Leave the harness on the engine, Use the underhood fuse box that's in the Tahoe. I will go over this in detail if you go this route. It's easy!

You will need a high pressure fuel system, The LS forum is full of threads on this.

A Ram-Jet manifold is an easy upgrade, Wiring harness mods are required & you need & 8 EV1 injector connectors.

cool
next weekend I will start to pull the engine and take some pic for you guys..
how much PSi do I need the fuel pump to have. I have an e-fuel pump in my truck now pushing 8 psi.

[Sick5]

Originally Posted by Bigdav160

I think clinebarger is recommending, and I agree, is something like an Edelbrock Pro Flo Intake. Add an eBay throttle body and injector set and you can have a reliable setup for only a little more money than a convoluted carb setup.

edit: Looks like you can get into a Stealth Ram manifold for a little less green.

Wow liking the look of the stealth ram.


More and more I'm leaning to FI idea. Just need a thread that I can follow..

[clinebarger]

Originally Posted by Sick5

cool
next weekend I will start to pull the engine and take some pic for you guys..
how much PSi do I need the fuel pump to have. I have an e-fuel pump in my truck now pushing 8 psi.

You need a 100 psi fuel pump, The fuel pressure regulator brings it down to around 60 psi.