My son runs this BTR stage 3 cam in his 86 K10 truck (see link)....5.3 LM7 w/cathedral port unmodified heads, flat top pistons and Edelbrock Pro Flo 4 fuel injection. It pulls well to 6k and has a nice lope at idle.
https://briantooleyracing.com/btr-ca...r31824100.html