Has anyone put a supercharger or nitrous on a 1985 302 Fuel Injected truck?

 

Too simple. Call Summit Racing. They have LOTS of kits available to do either. I recommend staying away from Nitrous. It is powerful and cheap, but much easier to melt down the engine with. I have both. It is really annoying to need the extra performance just to realize my bottle is empty.

Now for the important part. Why. I have asked this quesiton to lots of people who come to my shop. I get answers similar to 'I want my truck to be quicker'. More horsepower seldom makes you quicker. This is simply because you cannot get the power to the ground any faster then you do now. You just spin tires faster. Think about more traction first, better suspension (4 link), sticker tires, etc.

Now the major concerns if you plan to do this. First, what is the condition of the motor? The motors internals are usually tired. You should have forged rods and crank, a minimum of Hypereutectic pistons or forged. You will need more fuel delivery for anything but minimum boost. You will also need better ignition.
You build a blower motor the same for superchargers, nitrous, or turbocharging. They all simply cram more air and fuel into a given space for more power.

Your heads are probably sufficient. The heads, cam and valve sizes are negligable concerns once boosted. Besides a good 3 angle valve job and basic rebuild, don't spend lots of money on parts that will not give you much gain.

You do need to worry about the transmission, driveshaft, transfer case, axles, motor mounts, etc. I am putting out about 500 horsepower in a 6000 pound truck. This equation equals broken transmission, 2 broken transfer cases, two busted axles, a broken differential, twisted my driveshaft in two, broken motor mounts, and I even broke the spring mounts loose from the frame. (Detriot lockers, 33x12.50 tires, 6000 lbs equals lots of traction. Add lots of horsepower, something will eventually give). As it breaks I build it stronger.

This is in no way intended to discourage you. By all means, I love my truck and am extremely happy I built it instead of sitting around saying what I could have done, or what my buddy did, or what I heard happened. I just want you to go into this with some knowledge of what can happen.