Sounds like a fun project.

Putting a load on it is called a 'brake'. Not sure how you'd do that.

im pulling my a12 turbo out on my ute. as its not running and im planing to put a different motor in i still want to play around( find out why it not working riight) with this motor as i have put much time ito it and money so im making up an engine stand that i can have the engine running on similar to it being in a car but being much easier to work on and i want to mave all the guages. i also want to make it so that i can have some load on the engine so i can test it so its not free reving but im not to sure hom im gonna do that. there was an engine at tafe i went to a few years ago that was on an engine dyno and it had all the bit like guages, throtlle and all that stuff on like a control panel and that what im attempting to make but much smaller and of course i dont have the dyno

this might be a waist of time and money but hey its something to do