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ls3 wire harness for crate engine install

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Old Apr 24, 2008 | 03:48 PM
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Default ls3 wire harness for crate engine install

ok I've been looking at doing an crate LS3 swap into my 98 F-body. I' know I have a different pcm then the rest of the LS1 F-bodies out there. so I'm looking at just doing the whole ecu and harness swap. so has anyone delt with this harness?
LS376-480-Controller-Kit-19201327-P2221C242

I'm just looking for more info like what after market guages I can use and how difficult would it be to install in a 98 Z28 T56 Camaro?
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Old Apr 24, 2008 | 04:21 PM
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No able to really help you, but I have a question or concern...
It is in regard to being smog legal, if your care about that.. What are the smog / swap law there in NC.?.. if you swap the ECU out the 98' ECM for another one and they test for ODBII VIN information, you would fail..!?.. unless you were able to program your old VIN.

Just wondering if it is a problem to be concern with or how you are going to get around it ?
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Old Apr 24, 2008 | 04:26 PM
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car's reg in TN. where I'm originally from. no emissions testing there. also Tech II can load a vin on the ecm.
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Old Apr 24, 2008 | 07:38 PM
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I've got the LS2 harness and it worked out great. Best deal out there by far right now at only around $800
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Old Apr 24, 2008 | 08:50 PM
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Originally Posted by jw33
I've got the LS2 harness and it worked out great. Best deal out there by far right now at only around $800
how did you wire up the guages?
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Old Apr 24, 2008 | 10:47 PM
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Originally Posted by boxmonkeyracing
how did you wire up the guages?
My motor is in a mustang and I used all aftermarket gauges. The harness comes with a bulkhead connector that has temp output, oil pressure output, VSS, tach output and a bunch more. I just used the VSS and tach signals and the rest of the gauges had their own sensors. The harness even came with a male plug for the bulkhead connector so you just crimp the pins on your wires and slip them in the connector....Looks factory.
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Old Apr 24, 2008 | 11:50 PM
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coolness. thanks. hopefully soon I can order my ls376/480hp and harness.
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Old Apr 25, 2008 | 10:58 AM
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Originally Posted by boxmonkeyracing
coolness. thanks. hopefully soon I can order my ls376/480hp and harness.
When I checked a couple of months ago, this engine and harness was not shipping yet.

Andrew
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Old Apr 25, 2008 | 02:42 PM
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Originally Posted by Project GatTagO
When I checked a couple of months ago, this engine and harness was not shipping yet.

Andrew
LS3 480HP came off BO and have been shipping since middle of March. I've had one in hand since then and I was number 26 on BO list. Don't know about GM harness as don't plan on using it.
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Old Apr 25, 2008 | 06:03 PM
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That's good to know. Thanks for the update!

Andrew
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Old Apr 26, 2008 | 09:45 PM
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Originally Posted by poorhousenext
LS3 480HP came off BO and have been shipping since middle of March. I've had one in hand since then and I was number 26 on BO list. Don't know about GM harness as don't plan on using it.
where'd you get yours? crateenginedepot.com said it's on BO till june.
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Old Jun 6, 2018 | 08:20 AM
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Default Ls3 swap

Originally Posted by boxmonkeyracing
ok I've been looking at doing an crate LS3 swap into my 98 F-body. I' know I have a different pcm then the rest of the LS1 F-bodies out there. so I'm looking at just doing the whole ecu and harness swap. so has anyone delt with this harness?
LS376-480-Controller-Kit-19201327-P2221C242

I'm just looking for more info like what after market guages I can use and how difficult would it be to install in a 98 Z28 T56 Camaro?
I’m doing a similar swap but a ls3 crate motor with pcm into a 99 trans am and I am am on wiring up the gauges, she drives almost perfect it’s now just inspection gauges and all that. But I would appreciate to know how you figured this out
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