Ls1 to ls3
#1
Teching In
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Join Date: Sep 2012
Location: AUGUSTA GA
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Ls1 to ls3
Looking to update my 98 ss ls1 to the new LS3 ..I was told by The guys at the local chevy dealer there will be wiring harness issues since the new LS3 is fly by wire and the 1st gen LS1 is cable. Has anyone made the swap ? Is there wiring kits available so the traction control is still operable ??
#2
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Join Date: Jul 2010
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Never did the swap, just throwing out an idea. What would happen if you put your LS1 throttle body on the LS3? Not sure if it would work or bolt up but if you need to change from drive by cable to drive by wire you would have to purchase a new accelerator pedal as well and that could cost another $1,000.00 or so since it will be a pedal and sensors. I would see if the ECM will throw a code if it doesn't detect a foot pedal position sensor and go from there.
#3
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Hey thanks for the thought. Unfortunatley the LS1 intake and heads..drive by cable will not mactch up with the lS3 which is rectangular and drive by wire.. then there is the trans issue. Not sure what we are going to do yet
#6
I have the similar swap but using an cast iron 6.0 block. I went with the FAST 92 mm TB, and had to use the linglefelter reluctor converter box. You will need to change out your intake rockers and rod they sit on. They will not bolt up to the L92 heads. I was able to salvage my exhaust rockers though. You will also need to use the LS3 fuel rail and your MAP sensor changes locations. I'm using my LS1 60lb injectors but you have to measure and find custom injector O-rings unless you swap to LS3 style injector. Hope this helps. All I could think of for now.
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#8
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Should of just asked in the engine section man. Alot more info there and there's a sticky on it.
https://ls1tech.com/forums/generatio...02-f-body.html
https://ls1tech.com/forums/generatio...02-f-body.html