96 4.3 to 5.7 swap questions - S-10 Forum
 
LinkBack Thread Tools
post #1 of 11 Old 03-25-2008, 10:23 PM Thread Starter
anyone want to help?
 
ntloenf's Avatar
 
Join Date: Nov 2007
Location: Sturgeon bay
Posts: 366

User is: ntloenf is offline
96 4.3 to 5.7 swap questions

I have a 96 s10 with a 4.3. i also have a 5.7 out of a 97 fullsize truck that will be using. I have the jtr motor mounts and patriot headers as well for the swap.

my questions are:

1. Am I better off trying to keep my vortec 5.7 fuel injected or should i just carb it as fuel economy for the truck is not a major concern?

2. If i keep it fuel injected, I believe i need the computer from the 5.7, and what else do i need to do to wire/plum it?

3. If i go with a carb setup, how big of carb should i run? also what do i need to do to wire/plumb it? and do i need the 4.3 computer for this setup?

any help is appreciated. i dont really need a step by step how to but even if I can get a general idea. get me headed in the right direction.

ntloenf is offline  
Sponsored Links
Advertisement
 
post #2 of 11 Old 03-26-2008, 03:33 PM
cool to the tool
 
shiftit's Avatar
 
Join Date: Aug 2005
Age: 31
Posts: 680

User is: shiftit is offline
Re: 96 4.3 to 5.7 swap questions

if your 4.3 and 5.7 are both the "spider" injection (1 injector for each cylinder) you should only need to add 2 wires for the extra injectors and change a few things on the pinouts at the computer. You can subscribe to ACDelco and get the wiring diagrams for both vehicles for about $20, well worth it.

if both vehicles have 4l60e's the tranny wiring shouldnt need any modding (i think)

Quote:
Originally Posted by droppedss View Post
Yes he has a e-report with the e-police and they have an e-investigation. They will e-arrest you and you will be in e-jail and will have to pay an e-bond to get outta e-jail. Then you will have e-court and a e-hearing.
Quote:
Originally Posted by Imperial View Post
e-prisonrape
shiftit is offline  
post #3 of 11 Old 03-26-2008, 06:22 PM
Registered User
 
bkaltec's Avatar
 
Join Date: Mar 2007
Location: Overland Park KS
Age: 29
Posts: 146

User is: bkaltec is offline
Re: 96 4.3 to 5.7 swap questions

Youve got a super easy swap on your hands. The 5.7 will swap in no problems. Fuel lines will hook right up. The v6 engine wire harness will work on the v8, but, you will need the v8 fuel injector plug. And weave/solder in the (4 total, 2+ 2-) extra wires for the fuel injectors. Youll need the wire diagrams to do this to setup the correct pins. It gets a little tricky with the 96 trucks because the abs is computer controled that year. So you can either try to use the v6 computer and have it reprogramed, ive never done this so couldnt give any insight on it. Or use an abs module from a 95 blazer, which is stand alone. You also have the option of removing the abs all together. All guages and functions of the truck will remain the same. Trany, driveshaft and rear will all work with the v8, no mods. I would recommend using a corvette radiator, late 80's model and in the foward position (inside the radiator support. And electric fan. Also, sell the v8 swap manual while you can, theres realy not a lot of info in there for 2nd gen trucks. If you have any doubts, think of the vortec v8 as a vortec v6, its pretty much the same thing.
bkaltec is offline  
post #4 of 11 Old 03-26-2008, 10:31 PM Thread Starter
anyone want to help?
 
ntloenf's Avatar
 
Join Date: Nov 2007
Location: Sturgeon bay
Posts: 366

User is: ntloenf is offline
Re: 96 4.3 to 5.7 swap questions

thanks for the information. have you done the swap yourself or not? also could i just get the computer from the 5.7 and plug in the connector? that way i wouldn't need to solder in wire? just wondering. oh and i plan on ditching the abs. let me know please
ntloenf is offline  
post #5 of 11 Old 03-26-2008, 11:14 PM
Registered User
 
Join Date: Feb 2008
Age: 31
Posts: 36

User is: ominus is offline
Re: 96 4.3 to 5.7 swap questions

I have a side question, not to steal your post from ya.

I have a 95 4.3 4x4 tbi....would this swap be fairly easy into my truck as well, or would it be a bit of a bitch?

Would I just have to get the ecu and harness from another s10 or from a v8 donor truck or would there be more too it?
ominus is offline  
post #6 of 11 Old 03-27-2008, 02:26 AM
cool to the tool
 
shiftit's Avatar
 
Join Date: Aug 2005
Age: 31
Posts: 680

User is: shiftit is offline
Re: 96 4.3 to 5.7 swap questions

Quote:
Originally Posted by ntloenf View Post
thanks for the information. have you done the swap yourself or not? also could i just get the computer from the 5.7 and plug in the connector? that way i wouldn't need to solder in wire? just wondering. oh and i plan on ditching the abs. let me know please
I did this swap in my 98 blazer, slightly different but same basic idea. if you got the whole harness from the 5.7, you need two (-) wires running from the injector harness on the intake to the computer, than you can piggyback off the pink hotwires that are there from the other cylinders.

97's had a 5th connector for abs. so just leave it disconnected and you should be fine.

Quote:
Originally Posted by droppedss View Post
Yes he has a e-report with the e-police and they have an e-investigation. They will e-arrest you and you will be in e-jail and will have to pay an e-bond to get outta e-jail. Then you will have e-court and a e-hearing.
Quote:
Originally Posted by Imperial View Post
e-prisonrape
shiftit is offline  
post #7 of 11 Old 03-27-2008, 02:27 AM
cool to the tool
 
shiftit's Avatar
 
Join Date: Aug 2005
Age: 31
Posts: 680

User is: shiftit is offline
Re: 96 4.3 to 5.7 swap questions

Quote:
Originally Posted by ominus View Post
I have a side question, not to steal your post from ya.

I have a 95 4.3 4x4 tbi....would this swap be fairly easy into my truck as well, or would it be a bit of a bitch?

Would I just have to get the ecu and harness from another s10 or from a v8 donor truck or would there be more too it?
it would be a pain if the 5.7 was cspi. if the new engine was also tbi it is fairly easy but i dont know what exactly needs to be done.

Quote:
Originally Posted by droppedss View Post
Yes he has a e-report with the e-police and they have an e-investigation. They will e-arrest you and you will be in e-jail and will have to pay an e-bond to get outta e-jail. Then you will have e-court and a e-hearing.
Quote:
Originally Posted by Imperial View Post
e-prisonrape
shiftit is offline  
post #8 of 11 Old 03-29-2008, 11:31 PM
Registered User
 
Join Date: Feb 2008
Age: 31
Posts: 36

User is: ominus is offline
Re: 96 4.3 to 5.7 swap questions

humm...what are my best options for finding a 5.7? I have look around here abit, at wrecking yards and what not....but I am not sure what all had the 5.7
ominus is offline  
post #9 of 11 Old 03-30-2008, 12:17 PM
cool to the tool
 
shiftit's Avatar
 
Join Date: Aug 2005
Age: 31
Posts: 680

User is: shiftit is offline
Re: 96 4.3 to 5.7 swap questions

full size chevy & gmc trucks like the 96-99 c1500 and k1500
chevy tahoe same years

those are a couple to get you started.

Quote:
Originally Posted by droppedss View Post
Yes he has a e-report with the e-police and they have an e-investigation. They will e-arrest you and you will be in e-jail and will have to pay an e-bond to get outta e-jail. Then you will have e-court and a e-hearing.
Quote:
Originally Posted by Imperial View Post
e-prisonrape
shiftit is offline  
post #10 of 11 Old 03-30-2008, 03:00 PM
Registered User
 
Join Date: Jul 2007
Age: 27
Posts: 23

User is: 9743blzr is offline
Re: 96 4.3 to 5.7 swap questions

Quote:
Originally Posted by ntloenf View Post
I have a 96 s10 with a 4.3. i also have a 5.7 out of a 97 fullsize truck that will be using. I have the jtr motor mounts and patriot headers as well for the swap.

my questions are:

1. Am I better off trying to keep my vortec 5.7 fuel injected or should i just carb it as fuel economy for the truck is not a major concern?

2. If i keep it fuel injected, I believe i need the computer from the 5.7, and what else do i need to do to wire/plum it?

3. If i go with a carb setup, how big of carb should i run? also what do i need to do to wire/plumb it? and do i need the 4.3 computer for this setup?

any help is appreciated. i dont really need a step by step how to but even if I can get a general idea. get me headed in the right direction.
This is by far one of the easier swaps and cheaper swaps. The 4.3 and the 5.7 are one in the same. It is much easier to junkyard up the motor and computer, and get the wiring diagrams for the extra two cylinders needed. The majority of parts are interchange for the most part.
9743blzr is offline  
post #11 of 11 Old 03-30-2008, 09:24 PM
"Phat"boy
 
Jamal's Avatar
 
Join Date: Aug 2001
Location: Alton, Il
Age: 41
Posts: 1,280

User is: Jamal is offline
Re: 96 4.3 to 5.7 swap questions

Quote:
Originally Posted by ominus View Post
humm...what are my best options for finding a 5.7? I have look around here abit, at wrecking yards and what not....but I am not sure what all had the 5.7
2500 GM vans had the 5.7

"Hard work often pays off over time, but laziness pays off now!"
"everyone has the right to be stupid, some just abuse the privilege"
Jamal is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the S-10 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.


Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome