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96 S10 EFI 350 Motor Swap question..


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Old 10-23-2009, 01:08 AM   #1
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96 S10 EFI 350 Motor Swap question..

My best friend (Honorary Brother) is in the US Navy over in Japan..
He has overcome Major Drug Problems, I sold 3 of my cars over
the years to get n keep him on the right track.. I would die for him..

He has a 96 4.3 ZQ8 S10, I wanna try n put a 350 in it for him.. He Jus
Wished it had a V8.. Nothin to serious, jus V8 with Flows, Jus Simple..

I want to Try to put a EFI 350 in there for Him.... I know the 4.3 is a
350 with 2 less Pistons n I know that trans n converter will bolt up..
Jus Need Motor Mounts n Oil Pan.. Headers, not a Problem There..

My main question is Computer n Engine Wiring Harness Connection,
will a 350 Harness Clip right into a 96 4.3 S10 Harness.. Next Question,
since its a 96 with OBDII I need to keep the Comp for Emissions, What
Computer do I need, it has to control the trans, n now a 350 v8..

The Truck is a Reg Cab ZQ8 auto 4.3 S10.. Manual Windows, n Locks..
Jus lookin for a Turn Key EFI 350 S10.. It would only get Cold Air, n Duals..

Thanx,
Rob
Old 10-23-2009, 01:12 AM   #2
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Re: 96 S10 EFI 350 Motor Swap question..

http://www.currentperformance.com/
Old 10-23-2009, 02:28 PM   #3
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Re: 96 S10 EFI 350 Motor Swap question..

Ok, I know that site was for a bounch of Wiring Kits..

So does that mean that I can jus Clip a 350 Harness
In to the 96 S10 Harness??? Also, what computer do
I use in the S10???

Thanx,
Rob
Old 10-23-2009, 02:58 PM   #4
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Re: 96 S10 EFI 350 Motor Swap question..

you will need a stand alone harness and ECM for the engine, and will be completely seperate from the harness on the truck, there is no clipping into it

im sure theres a way to use the factory wiring of the truck, but it would be a giant headache, a lot of work, and the result would be an engine that probably doesnt run correctly

theres usually 2 computers on a vehicle, a PCM and a ECM, the PCM is the chassis computer and handles all non-engine related functions, often things like radio, heater controls, AC system, etc, and that is usually located behind the dash or on the backside of the passenger side kick panels, it needs to stay with the truck

the ECM (and PROM) is strictly for the engine, controls everything that the engine needs to know to work correctly, and these are engine specific, you can not use the one you have, you MUST find an ECM that is for the engine you plan to put in the truck, and if you want to build up the engine at all, you will have to have the ECM reprogrammed

the engine in question... is this an engine that you already possess? or are you just throwing ideas around?
Old 10-24-2009, 02:56 AM   #5
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Re: 96 S10 EFI 350 Motor Swap question..

Quote: Originally Posted by Maverick2664
you will need a stand alone harness and ECM for the engine, and will be completely seperate from the harness on the truck, there is no clipping into it

im sure theres a way to use the factory wiring of the truck, but it would be a giant headache, a lot of work, and the result would be an engine that probably doesnt run correctly

theres usually 2 computers on a vehicle, a PCM and a ECM, the PCM is the chassis computer and handles all non-engine related functions, often things like radio, heater controls, AC system, etc, and that is usually located behind the dash or on the backside of the passenger side kick panels, it needs to stay with the truck

the ECM (and PROM) is strictly for the engine, controls everything that the engine needs to know to work correctly, and these are engine specific, you can not use the one you have, you MUST find an ECM that is for the engine you plan to put in the truck, and if you want to build up the engine at all, you will have to have the ECM reprogrammed

the engine in question... is this an engine that you already possess? or are you just throwing ideas around?

The first post has more details.. The Skinny is The truck belongs to my
My best friend (Honorary Brother) is in the US Navy over in Japan..
The truck is in my drive way when he is out of the Country Serving our
Country.. I am jus tryin to figure out how I could pull this together for him.

The PCM is the OBDII Computer right?? Can I jus Throw a Carb on the 350??
If the PCM is for the Emissions n Vin stuff I could do a Carb n still be Legal.

Jus sayin.. If I pulled a 350 from a 98 Camaro with the Engine Wire harness
n the Camaro Computer would that work??? Carbed 5.7 would be Easiest..

The Truck is pretty much mine, so in 1 year when he is done his 5 years
over seas. He will go out n buy a Different truck with all of the $$$ he Banked..
Then the Truck will b mine.. Its been with me for 6 years.. Then I will Pimp It..

Thanx,
Rob

Last edited by Bert Pod : 10-24-2009 at 02:59 AM.
Old 10-24-2009, 03:32 AM   #6
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Re: 96 S10 EFI 350 Motor Swap question..

OK its a 96 truck therefore OBDII. For starters PCM stands for powertrain control module. The PCM handles ALL THE DRIVE TRAIN ELECTRONICS. ECM stands for engine control unit and both terms are pretty much interchangeable. Along with ECU (engine control unit). The BCM controls the inside components concidering it stands for body control module (radio, power accessories, air bags, etc). Normally all OBDI setups are called ECMS and they have proms, but no OBDII setups have prom chips.

If the truck has an auto trans you can pull a vortec motor and computer from a full size truck as long as it has the same power options. You will need to pull some wires out of the fullsize truck harness for extra sensors on the 8 cylinder. Or you can get a stand alone comp for the trans and a stand alone comp for the engine.

If you have a manual trans you can either put a carb engine in it or do the swaps listed above just no stand alone comp for the trans.

The first swap is the best because you can retain the original dash and all the original components but none of these swaps are easy.

http://jaguarsthatrun.com/ has a lot of info on this subject.
Old 10-24-2009, 11:34 AM   #7
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Re: 96 S10 EFI 350 Motor Swap question..

Quote: Originally Posted by More Displacement
OK its a 96 truck therefore OBDII. For starters PCM stands for powertrain control module. The PCM handles ALL THE DRIVE TRAIN ELECTRONICS. ECM stands for engine control unit and both terms are pretty much interchangeable. Along with ECU (engine control unit). The BCM controls the inside components concidering it stands for body control module (radio, power accessories, air bags, etc). Normally all OBDI setups are called ECMS and they have proms, but no OBDII setups have prom chips.
ah, thanks for clearing that up, im a little foggy about OBDII and current electronics, im focusing more on the older fuel injection systems because of the TPI im building

but anyways, yes a carb would be way easier, getting fuel injection to work correctly can be overwhelming and costs much much more than a carb setup... according to your first post, you want it kept simple, carb is simple, fuel injection is not
Old 10-24-2009, 01:21 PM   #8
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Re: 96 S10 EFI 350 Motor Swap question..

Quote: Originally Posted by More Displacement
OK its a 96 truck therefore OBDII. For starters PCM stands for powertrain control module. The PCM handles ALL THE DRIVE TRAIN ELECTRONICS. ECM stands for engine control unit and both terms are pretty much interchangeable. Along with ECU (engine control unit). The BCM controls the inside components concidering it stands for body control module (radio, power accessories, air bags, etc). Normally all OBDI setups are called ECMS and they have proms, but no OBDII setups have prom chips.

If the truck has an auto trans you can pull a vortec motor and computer from a full size truck as long as it has the same power options. You will need to pull some wires out of the fullsize truck harness for extra sensors on the 8 cylinder. Or you can get a stand alone comp for the trans and a stand alone comp for the engine.

If you have a manual trans you can either put a carb engine in it or do the swaps listed above just no stand alone comp for the trans.

The first swap is the best because you can retain the original dash and all the original components but none of these swaps are easy.

http://jaguarsthatrun.com/ has a lot of info on this subject.
Quote: Originally Posted by Maverick2664
ah, thanks for clearing that up, im a little foggy about OBDII and current electronics, im focusing more on the older fuel injection systems because of the TPI im building

but anyways, yes a carb would be way easier, getting fuel injection to work correctly can be overwhelming and costs much much more than a carb setup... according to your first post, you want it kept simple, carb is simple, fuel injection is not

Im gettin confused with all the Computers n Wiring stuff..

How can I do a Carb with a Auto trans n keep the OBDII Computer???

Can I swap out the 4L60E trans for a 700R4 trans n do a Carbed 350
n still have the OBDII Computer?? How can I do that??

Thanx,
Rob
Old 10-24-2009, 03:24 PM   #9
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Re: 96 S10 EFI 350 Motor Swap question..

If you switch to a carb than the computer has to go. They make a stand alone computer for the 4L60E but that goes about $1800 for the harness and computer. You would be better off swapping out the trans for a 700R-4 and carb setup. With this you dont need the computer at all but you would have a lot of rewiring to do. Well if most of the internall stuff isnt power it wouldnt be extremely hard. Just making sure things like the windshield wipers, radio, turnsignals, and all that other jazzy stuff works. I have a 97 S-10 that im looking to do the swap in but Im not sure if they have a BCM (body control module) which would have to be pulled and have everything rewired to bypass it. At that point in time its just running power wires directly to switchs which simplifies the precess but your pretty much pulling the whole truck apart to get at all the wiring. Not to mention you can either keep the stock fuel pump and run an after market regulator or swap it for a fuel cell and mechanical pump.

Not trying to discourage you but I dont want to see you get back on here in a couple of months opening a thread like "WHAT THE F*CK DO I DO NOW". Already saw a few of those.

IN the end if you can get your hands on a 96 vortec V-8 and the computer and harness out of a full size truck do it. It will be the easiest swap with the least headache (if you feel comfortable with your electrical skill). Just swap the motor put the computer in, extend some wires and add a few for the additional O2 sensor, and some other sensors I blanked out on at the moment. Then get the computer calibrated to the tire size on the truck and the raer axle ratio and its done.

THo if you plan to beat on this truck at all or take it to the track just swap a 700R-4 into it the stock s-series transmission arent built to take a beating from an 8.

Your can still put an aftermarket EFI system on the engine. Which will help with fuel economy but if your not worried about it and you like the simplicity of the carb put one on.

700R-4 and the 4L60E are basicly the same and as far as i know are the same length and have the same spline for the drive shaft yoke.



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