num1racer

I am just starting out on my first LSX build into a 1938 chevy truck with c5 corvette suspension and drivetrain. Putting in a LQ4 motor with LS3 heads and intake (may upgrade to holley hi ram) and I bought a couple harnesses to rework for the build. First is from a 2002 Camaro ls1 and the other is a 2005 corvette harness. Both have the PCM's. Which one should I rework or does it matter? I also have the factory instrument cluster from a 2004 corvette that I want to use. Does anyone know the pin outs on the PCM to make this work? I know LT1swap.com has info to rework the harness, but I cant find the info for the cluster anywhere.
Also have questions about tuning and if it is wiser to have someone tune the PCM or how bad the learning curve is for HP tuners or what the best program is for noob's.
Thanks for any info anyone can provide.

RonSSNova

iTrader: (3)

The Camaro harness is pretty easy to rework and is drive by cable only.
The corvette harness is drive by wire.

What throttle body were you planning on using?

Ron

num1racer

I got an eBay special 102 dbc with an ls3 intake that I bought but not sure if I want to go that route or sell that setup and Holley hi ram. More cosmetic reasons than build specs. I bought the corvette harness because I thought it matched my 6 speed setup better. Not sure how the trans setup affects the harness or pcm. Trying to learn it all.