My trans guy says those Lokar cable setups are far from plug and play. They can be made to function correctly but it takes some doing.

That being said, if it won't shift out of second at WOT without lifting, there's something wrong internally. The governor should force the upshift regardless.

What RPM are you pulling it to? Even if it had a Hemi governor in it, it should shift WFO by 5500ish.

Kevin