Just curious..,
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Obsessed
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Just curious..,
Not going to do it but if you were to swap out your 350 for a modern LS motor, do you have to install a whole computer system to run it?
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Yes. If your going to run a modern sequential port injected engine. You need a computer to run it.
Le Mans Master
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No actually... They make intakes to mount a carb on LS motors and many people actually go that route even though you would be giving up much of the advantages of the motor. They also sell simpler aftermarket FI systems.
I was watching an episode of engine masters last week where they were running a carb powered LS with no computer and they mentioned the different aftermarket accessories available to run things like the coil packs without a computer
I was watching an episode of engine masters last week where they were running a carb powered LS with no computer and they mentioned the different aftermarket accessories available to run things like the coil packs without a computer
Last edited by augiedoggy; Apr 6, 2021 at 06:32 AM.
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Obsessed
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From: Valencia, Spain
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No actually... They make intakes to mount a carb on LS motors and many people actually go that route even though you would be giving up much of the advantages of the motor. They also sell simpler aftermarket FI systems.
I was watching an episode of engine masters last week where they were running a carb powered LS with no computer and they mentioned the different aftermarket accessories available to run things like the coil packs without a computer
I was watching an episode of engine masters last week where they were running a carb powered LS with no computer and they mentioned the different aftermarket accessories available to run things like the coil packs without a computer
Dr. Detroit
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From: New Braunfels Texas
To run an LS engine with no computer, you will need the front cover distributor drive adapter.......there is no provision in an LS engine from GM for a distributor.
I have seen this setup in an old Chevelle and it always prompts me to think "why didn't you just build the engine that was in it or something similar?"
LS engines have excellent cylinder heads......but were never meant to fit in the hole......so it is 6 of one, a half dozen of the other......
Performance media has done a great job of convincing every 20 year old on the planet that you can drop one of these in over a weekend for $500....and they will fight you tooth and nail to prove they are wrong.
You CAN swap a crate engine over a weekend....alone.....I have and still do it......
Jebby
I have seen this setup in an old Chevelle and it always prompts me to think "why didn't you just build the engine that was in it or something similar?"
LS engines have excellent cylinder heads......but were never meant to fit in the hole......so it is 6 of one, a half dozen of the other......
Performance media has done a great job of convincing every 20 year old on the planet that you can drop one of these in over a weekend for $500....and they will fight you tooth and nail to prove they are wrong.
You CAN swap a crate engine over a weekend....alone.....I have and still do it......
Jebby
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Obsessed
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From: Valencia, Spain
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To run an LS engine with no computer, you will need the front cover distributor drive adapter.......there is no provision in an LS engine from GM for a distributor.
I have seen this setup in an old Chevelle and it always prompts me to think "why didn't you just build the engine that was in it or something similar?"
LS engines have excellent cylinder heads......but were never meant to fit in the hole......so it is 6 of one, a half dozen of the other......
Performance media has done a great job of convincing every 20 year old on the planet that you can drop one of these in over a weekend for $500....and they will fight you tooth and nail to prove they are wrong.
You CAN swap a crate engine over a weekend....alone.....I have and still do it......
Jebby
I have seen this setup in an old Chevelle and it always prompts me to think "why didn't you just build the engine that was in it or something similar?"
LS engines have excellent cylinder heads......but were never meant to fit in the hole......so it is 6 of one, a half dozen of the other......
Performance media has done a great job of convincing every 20 year old on the planet that you can drop one of these in over a weekend for $500....and they will fight you tooth and nail to prove they are wrong.
You CAN swap a crate engine over a weekend....alone.....I have and still do it......
Jebby
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looks like I've been shot down just a bit. so, let me re - state this a bit differently.
A LS engine, set up as a LS engine, needs a computer to run it. it has a crank position sensor. NOT a distributor. it has 8 electrically run computer controled injectors. and numurus other sensors that the COMPUTER needs to acutely run this engine. Now, if you change the manifold, add on some aftermarket distributor. Yes perhaps you can run it with a carb and no computer. BUT WHY?. I have a computer running the EFI on my 77. seems much better overall to wire in the ECU and all the sensors. Or, just rebuild your early style engine with a roller cam and good heads.
A LS engine, set up as a LS engine, needs a computer to run it. it has a crank position sensor. NOT a distributor. it has 8 electrically run computer controled injectors. and numurus other sensors that the COMPUTER needs to acutely run this engine. Now, if you change the manifold, add on some aftermarket distributor. Yes perhaps you can run it with a carb and no computer. BUT WHY?. I have a computer running the EFI on my 77. seems much better overall to wire in the ECU and all the sensors. Or, just rebuild your early style engine with a roller cam and good heads.
Dr. Detroit
Joined: Mar 2012
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From: New Braunfels Texas
looks like I've been shot down just a bit. so, let me re - state this a bit differently.
A LS engine, set up as a LS engine, needs a computer to run it. it has a crank position sensor. NOT a distributor. it has 8 electrically run computer controled injectors. and numurus other sensors that the COMPUTER needs to acutely run this engine. Now, if you change the manifold, add on some aftermarket distributor. Yes perhaps you can run it with a carb and no computer. BUT WHY?. I have a computer running the EFI on my 77. seems much better overall to wire in the ECU and all the sensors. Or, just rebuild your early style engine with a roller cam and good heads.
A LS engine, set up as a LS engine, needs a computer to run it. it has a crank position sensor. NOT a distributor. it has 8 electrically run computer controled injectors. and numurus other sensors that the COMPUTER needs to acutely run this engine. Now, if you change the manifold, add on some aftermarket distributor. Yes perhaps you can run it with a carb and no computer. BUT WHY?. I have a computer running the EFI on my 77. seems much better overall to wire in the ECU and all the sensors. Or, just rebuild your early style engine with a roller cam and good heads.
But as I said too....WHY? Added expense and complexity.....and you still have to dick with putting an LS engine in the hole it wasn't meant for.....
I agree.....if you are going to LS swap.....do the whole deal with all of the electronics......to me, that is part of the reason to do the swap, they go hand in hand.....more power and more control.
Jebby
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Why would you? It’s cheaper to keep it intact and the computer is small and easy to remove if you decided to later. I bought a LS engine and tranny from a wrecked 2012 Camaro, had Speartech make me a harness and unlock the ECU, and dropped it in my 1988 LR Defender. There were literally five wires to connect. So, cheaper, easier and better.
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All the swap parts will get expensive fast as well
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