i got a perfectly fine stock 22re from my 81 toyota pickup, will it have enough power for some mud boggin? If not is a 350 a good idea, if not what is?  

There is a really big gap between a 350 and a 22RE but some so reason some think there is not other options. Remember that weight from a big engine is not a asset in mud either. If you feel you need more power, consider a toyota V6 or maybe even a GM 3.8 or 4.3 V6. If you would take the time to install some 5.29 gears to go with bigger tires in mud it will surprise you how well it may do. Biggest single mistake people make here is no changing axle gears when they lift them and then blame the engine not the large tires with stock gears.  

ok i understand about the gears but can the 5.29 gears, get the speeds for highway  

When you change the tire size, you change the effective final gear ratio.
There are three things that affect this ratio.
1 - Transmission gears.
2 - Differential gears.
3 - Tire size.
When you increase tire size you increase the effective final drive gear ratio. Since changing the gears in the transmission is usually not an option, the goal of changing the differential gears is to return the final gear ratio to something close to stock.
There are plenty of calculators on the web to help you figure out what gears you need. My recommendation is to go with gears that will give you a final drive ratio slightly lower (numberically higher) than stock. This will help offset the extra rolling resistance and unpsrung weight of the wheel/tire package as well as the change in effective gear ratio.
As an example, my Dodge originally had 31" tires and 3.92 gears. After putting on a lift and 37" tires, I changed to 4.56:1 gears. 4.88:1 would have been even better, but sadly were not available. This combo, however, keeps the engine RPM at a given speed very close to factory.
Real world usage also plays a role in gear selection. And you have to be honest. If you're build a mall crawler that will only see mild off highway use and are concerned with mileage, then you can use higher (numerically lower) gearing. If you're building a hard core trail rig that will see limited street use (like my Jeep) then you will want to use even lower (numerically higher) gears. I used 5.13:1 gears in the Jeep even though it runs the same size tires as the Dodge.  

Dirty_Dog thinks like I do on axle ratios. I am surprised that he could not find a 4.88 though because they are made unless he has that *** 8 inch front axle diff (that is really a rear axle diff by design for a light SUV) and in which case 4.56 is tops at the moment. Below is a link to a on line axle ratio calculator that I host.

Click Here  

The 4.88:1 is reportedly available now, but was not at the time. Not for the axles in my Dodge. The front D44 was not the problem. It was the rear 9 1/4" that Dodge uses on their half ton trucks.
For the Jeep, the D44/12 bolt combo I used has tons of options. I thought 5.13:1 was the best for it's heavy trail/minimal street combo.  

wow snowman great site literally, it wasvery helpful!  

Sno's right, have you considered maybe a 3.0 or a 3.4 swap? Or even a 4.0 swap, I have seen a few of them around lately. Or you could do a 7MGTE swap (turbo Supra). There is a whole world of engine swaps out there! Be sure and let us know what you end up going with!  

Rockwells most commonly have a 6.44 ratio correct?  

Where would i need to look to find out what my tranny and t-case ratios are?

That calculator is awesome!  

Google.

What kind of vehicle is it? Maybe we can help...