I thought of super charging a car years ago but passed because of the cost of a full kit.

Look at the pros and cons. Beside a little loss in gas mileage some cars/trucks are fine with a supercharger. Just don't push the boost it stupid high numbers.

I don't know anything about a Tundra so I can't talk specifically about your truck/engine/trans but there is so much online today you should be able to find some good research.

Have loads of cash, just love engine mods? Sure, why not.

Otherwise...

I have a 2000 Silverado with the 5.3 motor that I added a blower to back in 2005 when the truck had 50k miles on it. Still have it today although with a larger supercharger. It makes over 500 hp at the rear wheels and serves as a daily driver with 162k on it. I did have to upgrade the transmission at 110k and the differential as well.

When I initially added the s/c to my Chevy it was making 6 psi and everything else was stock. I drove it that way, with a lot of towing, for 5 years before I started raising the boost. If you do it right and make sure you have enough fuel, you should be ok. The transmission in the Tundra is a big one and should be able to handle an additional 100hp or so. If you stop there you will probably get a lot of life out of it.

FWIW - I also own a 1998 Toyota 4 Runner. It was bought new from the dealer with the s/c option and currently has 160k on it. I recently rebuilt the s/c and did the timing belt, water pump, etc. Ready for another 100k.

I also have a 2014 Tundra with 37k on it and I am leaving it stock....for now, anyway.

Point being, a s/c is not going to be the end of the motor, if it is done correctly and provided you don't beat on it all the time.

When I worked for Aamco building transmissions I loved the guys who added superchargers and such to their engines.
I made a lot of money off of y'all. A lot of money.

When I bought my current vehicle, I went out of my way to find one that was naturally aspirated. One less thing to go wrong, one less expensive thing to go wrong.

Definitely have to make certain the transmission is up to the increased torque the S/C will put out.

Also now it will be nothing but premium fuel - once you throw that level of air into the combustion chamber, pre-detonation is a genuine concern. Forced aspiration engines require premium fuel due to combustion temperatures rising.

If you do not use premium fuel - the engine module will map-down the power output = no value in having the S/C.

Typically the engine controls will need a re-mapping to handle the increased boost and the overall boost timing will need to be appropriate to the RPM curve.

An example is Buick Riviera 3.8L supercharged - boost was really only present from 1700-2100 RPM - the rest was let off via a waste gate.

Also I could have bought a smaller pulley to run the S/C - but it could only be so small before valve springs needed to be changed to exploit the increased output of the S/C.

I had a '99 Riviera S/C[last year of build] - GM put a more beefed-up trans in it for that year to handle the torque - can only imagine what the prior years version without the stronger trans suffered.

Not sure you are really going to get the value in the investment

Pros: crazy torque increase.

CONS: pricey.

If you need that kind of torque/power then there's no better way to get it. The dealer supports/installs them so they can't be that bad. As long as you aren't beating on it every day I would think it would hold up just fine.

I would probably be saving up for one if I had a Tundra!
http://www.caranddriver.com/re...d-first-drive-review

But then noticed this:
http://news.pickuptrucks.com/2...rd-supercharger.html

can you still get this part new?!

The thing you can count on regarding boosting an engines horsepower is that as the horsepower goes up the reliability will go down if nothing else is changed. Any weak links will be exposed some sooner and some later but they will arise.

Interesting the quick demise of supercharged truck engines, considering a lot of big rigs are either supercharged or turbo charged and run for hundreds of thousands of miles.

My 03 F150 has the 5.4L Supercharged engine from the factory, at 145,000 plus miles it runs great, never been in the shop for a single engine problem, doesn't knock and it's not worn out at all, the trans and diff are also fine,

If you put a reasonable amount of boost for street use it's not going to blow the bottom out of the engine. Crank it up so you can drift or drag race and then hit it hard everytime and you'll break any car/truck supercharged or not...

The Magnuson superchargers for the Tundra is a great kit. Everything's included. Magnuson originally built the TRD Supercharges that came out in the late 90's for the V6's. I had one on my V6 2000 4Runner that made it a blast to drive. I put a smaller 9psi pulley and a 7th injector kit on it. Never had any issues. We sold it to my inlaws with 210K miles & they just gave it to our nephew with 290K miles. Still no issues, doesn't burn oil, shifts great.
Downside=Price. They are not cheap but quality never is. Magnuson has been building OEM supercharger kits for YEARS. They wouldn't put it on the market if it was causing things to break downstream.