Help please !! What harness and computer do I need ?

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Jan 31, 2016 | 01:08 PM

Chanselsx

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Help please !! What harness and computer do I need ?

I have a 2003 5.3 that I'm building and putting in a 99 roller ls Camaro that I bought ... The 5.3 now has all ls1 intake injectors throttle body and rails on it ... What harness and computer do I need so I can hook the motor up to the car ? Any help is great thanks

Jan 31, 2016 | 01:12 PM

Chanselsx

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Will a 99-02 Camaro harness and computer work ? Just like it would with the 5.7 sence I have swapped to 5.7 parts ?

Jan 31, 2016 | 08:04 PM

Paul Bell

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Welcome to LS1tech!

The 2003 AND 1999~2002 applications are both genIII systems. The Camaro harness and PCM will work with the 2003 engine. You'll need to use the intake manifold for the Camaro.

While you're in there, swap in some nice new ACDelco knock sensors and an oil pressure sensor. Aftermarket sensors are junk...

Jan 31, 2016 | 08:13 PM

Chanselsx

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Quote:

Originally Posted by Paul Bell

Thanks !!! And that's for the reply . I have put all new sensors and ls1 intake throttle body and injectors and rails , also put a Texas speed 228r with btr .650 dual springs and the heads milled .015 new valves and seals also goin to try to spray a good amount of nitrous at it ... When it blows I plan on fully buildin a 6.0 for it

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