PCM Question - 5.3 motor to LS1 - Problems?

[George C]

Tune is the safest way possible and will get best results. thngs will run but doesnt mean it runs right.

[93blackbeast]

Thanks for the response guys.

And I'm fully aware that I'll have to tune it, I just wanted to make sure that it would be feasible to tune it (correctly) to run an LS1. I have tuned a couple of Gen III engines with HP tuners and don't have a problem at all, but someone once told me that i would need a PCM from an LS1 in order to get it tuned right...something about a displacement calculation in HP Tuners...

I've been through the software pretty in depth, but I don't recall coming across something where it actually mattered if the PCM knew the displacement. All I know that is critical is the VE, spark timing, etc. tables....if I get those in, I would think I'm good.

Does that sound right?

Thanks,

Cody B.