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Old 10-21-2008, 10:03 PM
jared_riding
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Default 4.3l swap to vortec 4.3?

I HAVE A 95 JIMMY WITH 4.3 VORTEC THAT IS WRECKED. I WANT TO PUT ITS GOOD ENGINE IN MY 90 MODEL S10 WITH BAD ENGINE.WHAT WILL IT TAKE. I KNOW IT WILL BOLT RIGHT UP, BUT WHAT ABOUT THE COMPUTER?
1 PERSON TOLD ME DO IT ,BUT SWITCH THE WIRING HARNESS AND COMPUTER.THAT SOUNDS COMPLICATED.ON ANOTHER NOTE WHAT ABOUT THE TRAN, THEY ARE BOTH AUTO ,BUT WILL THE COMPUTER EFFECT IT.
IF IT WILL BE REALLY HARD TO SWAP I MIGHT JUST REBUILD THE ENGINE IN THE S10.

HELP
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  #2  
Old 10-21-2008, 11:30 PM
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i_UZu HOmbre i_UZu HOmbre is offline
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Quote:
Originally Posted by jared_riding View Post
I HAVE A 95 JIMMY WITH 4.3 VORTEC THAT IS WRECKED. I WANT TO PUT ITS GOOD ENGINE IN MY 90 MODEL S10 WITH BAD ENGINE.WHAT WILL IT TAKE. I KNOW IT WILL BOLT RIGHT UP, BUT WHAT ABOUT THE COMPUTER?
1 PERSON TOLD ME DO IT ,BUT SWITCH THE WIRING HARNESS AND COMPUTER.THAT SOUNDS COMPLICATED.ON ANOTHER NOTE WHAT ABOUT THE TRAN, THEY ARE BOTH AUTO ,BUT WILL THE COMPUTER EFFECT IT.
IF IT WILL BE REALLY HARD TO SWAP I MIGHT JUST REBUILD THE ENGINE IN THE S10.

HELP
Are they both V6's?

Last edited by i_UZu HOmbre; 10-21-2008 at 11:31 PM. Reason: misspell
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  #3  
Old 10-22-2008, 12:37 AM
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You would have to swap all the electronics over. 95 has a different injection type.
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Old 10-22-2008, 11:15 AM
jared_riding
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yes they are the same v6.

how hard is it to change all electrical?
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Old 10-22-2008, 05:27 PM
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Basically you're gonna have to gut the 90 model of ALL of the engine related harness and engine and swap the engine in and splice the harnesses together...
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Old 10-22-2008, 07:54 PM
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Quote:
Originally Posted by jared_riding View Post
I HAVE A 95 JIMMY WITH 4.3 VORTEC THAT IS WRECKED. I WANT TO PUT ITS GOOD ENGINE IN MY 90 MODEL S10 WITH BAD ENGINE.WHAT WILL IT TAKE. I KNOW IT WILL BOLT RIGHT UP, BUT WHAT ABOUT THE COMPUTER?
1 PERSON TOLD ME DO IT ,BUT SWITCH THE WIRING HARNESS AND COMPUTER.THAT SOUNDS COMPLICATED.ON ANOTHER NOTE WHAT ABOUT THE TRAN, THEY ARE BOTH AUTO ,BUT WILL THE COMPUTER EFFECT IT.
IF IT WILL BE REALLY HARD TO SWAP I MIGHT JUST REBUILD THE ENGINE IN THE S10.

HELP
What type of injection do they both have on them? Are they both vortecs?
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Old 10-22-2008, 08:09 PM
jared_riding
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the 90 model has a throttle body i think and the vortec has regular fuel injection as far as i know.

i think your right on having to replace all wiring. i am really leaning toward just rebuilding the original 90 engine and scraping the jimmy with the vortec.

idea? would the vortec engine work if i put the 90 models heads and intake on it???
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Old 10-22-2008, 08:25 PM
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Quote:
Originally Posted by jared_riding View Post
the 90 model has a throttle body i think and the vortec has regular fuel injection as far as i know.

i think your right on having to replace all wiring. i am really leaning toward just rebuilding the original 90 engine and scraping the jimmy with the vortec.

idea? would the vortec engine work if i put the 90 models heads and intake on it???
The non vortec heads won't work on the tbi. If you did do the swap with the 95 vortec motor it's not hard to swap the wires. I did it on my 88 blazer with a 2.8 and swapped in a tbi 4.3. You'd have to put the dash from both of them and unplug all of the wires to make it work. I was hoping you had a good block on the 90 cause the vortec heads would fit it but you'd still have to swap the wires over. How bad wrecked is the 95 jimmy?
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Old 10-22-2008, 08:53 PM
jared_riding
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the 95 engine is great the passanger side is jacked. front fender and suspension are ruined.

so replacing all wiring would consist of unpluging everything behind the dash and pluging in the harness from the 95 into the 90.
should most just be plugs or will it be alot of splicing.
also i assume i swap the computers and work from that.
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Old 10-22-2008, 08:59 PM
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If you decide the scrap it PM vivalahammer he might want some interior parts.
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