Why when you take off does your 94sr5 v6 4wd sound like the engine is overrevving shifting from 1-2 2-3?

The V-6 has a fan clutch that take a couple of minutes to adjust. (the valve inside needs to open after it warms up)Don't rev the engine until it is quiet, otherwise the fan (plastic) will blow apart from being over rev'd (I know from experience, new fan and many other items under hood that needed replacement, including new paint on the hood!)