As others said, if its elites and non-elites, you tank the elites and let the dps/healers worry about the non-elites. Once you have threat on the elites and know they won't bail for the healer, then you can assist in pulling non-elites off though they are usually dead by this time.
If it's just elites, if its 3 then you should be able to run in, one ability on the main kill target, one ability on a second mob, one ability on the third, and then taunt the first off the dps right as it changes target if taunt resist, stun the main target. Ideally keep threat off of healers first, then off of dps second. You lose a dps you can finish the pack with 2 dps and a tank and a healer no problem.
If it's just elites and there are 4 of them, then hopefully you saved rage from the last pack or have a rage potion. What you would want to do is mark one as the kill target, run in and heroic strike not the kill target, then instantly tab over and use an ability on the other 3 targets. By leading with heroic strike and waiting until it fires to use an ability, you can pull off 4 threat moves faster than if you just chained 4 threat moves back to back. With GCD, that would take you 4.5 seconds before you touched the last target and the healer would probably get threat before then. Doing it this way you can get to that last mob right at 3 seconds and should be safe.