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Ls1 to ls3. Whats needed?

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Old Apr 5, 2016 | 02:32 PM
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Default Ls1 to ls3. Whats needed?

Hi.

I have searched but only found old threads. So this is it what i know for now and what i need:

24x reluctor wheel

Ls1 map sensor. Or is it better to go with the ls3 and just use a adapter harness for that instead?

Ls1 knock sensors. One on each side
Ls3 fuel injector connectors
Crankshaft sensor ls1 black
Cable driven throttle body

I saw this thread, but does it applies ls3 also? Have i missed something?

http://www.ls2.com/forums/showthread.php/626014-How-to-Install-an-LS2-in-an-LS1-car

Last edited by ChrisO; Apr 5, 2016 at 02:58 PM.
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Old Apr 5, 2016 | 03:00 PM
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You need a adapter harness for the cam sensor also.
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Old Apr 7, 2016 | 03:17 PM
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i have done som more reserach, and this is what i came up with what i need so far:

timing gear: can i use that one for 16 dollars? it´s reweied that it would work with a 3 bolt cam. just wanna make sure. do a also need a ls2 chain damper like this: http://www.summitracing.com/int/part...8670/overview/

timing gear

http://m.summitracing.com/parts/nal-12586481

http://m.summitracing.com/parts/nal-12576407

map sensor adapter cabel: would this work with a ls1 engine harness? or do i need a ls1 map sensor?
http://m.summitracing.com/parts/hly-558-416

ls1 knock sensors:
http://m.summitracing.com/parts/smp-ks2

24x refluctor wheel:
http://m.summitracing.com/parts/nal-12559353

ls2 valley cover:
http://m.summitracing.com/parts/nal-12633906

and a ls1 knock / cam sensor harness:
http://www.summitracing.com/int/parts/cei-109081

have i missed anything?

Last edited by ChrisO; Apr 8, 2016 at 07:32 PM.
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Old Apr 8, 2016 | 07:54 PM
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Is it necessary to change the cam or can i just change the big cam gear?
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Old Apr 8, 2016 | 10:19 PM
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I'd get my wires here http://racetronix.biz/items.asp?Cc=H...TpStatus=1&Tp=
but before spending any money you might spend more time reading, just a suggestion. You haven't told us what you're starting with so it's hard to say for sure what you'll need.
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Old Apr 9, 2016 | 12:51 AM
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Originally Posted by chuckd71
I'd get my wires here http://racetronix.biz/items.asp?Cc=H...TpStatus=1&Tp=
but before spending any money you might spend more time reading, just a suggestion. You haven't told us what you're starting with so it's hard to say for sure what you'll need.
i don´t even have the car yet. i´m just in the planing stage to get all the info that i need and what to do before i start. if so, it´s going in a camaro thridgen 90-92. do you have any experience about the cam swap, if it´s needed if i skip the conversion box?

just a thought, but is it possible to use a ls3 engine harness and pcm instead of a ls1 harness?

Last edited by ChrisO; Apr 9, 2016 at 02:35 AM.
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Old Apr 9, 2016 | 04:00 PM
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i´ve got confirmed that the ls3 map sensor works with the ls1 pcm if i get a adapter cable. so now it´s only two more questions that remains.

1:

is it possbile to use a ls3 harness and ecm (ecu,/pcm or what it?s called) and get it to work? instead of using adapter cables etc

2:

change the refluctor wheel to 24x. i know which parts i have to use BUT, the only thing i don?t know if have have to change the cam to a 3 bolted. or can i use the stock ls3?
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