How many miles have you put with the supercharger on your truck, and what kinda power and torque would one expect with 5psi?
I've only put on 4-5k. My transmission is starting to slip more than it used to, but it's an original 4L60e, and my truck has 196k on original engine and trans. It's held up pretty well, but I only have a 3psi pulley on it. It's definitely more powerful and A LOT more torquey. Let's put it this way: I have a stock 10 bolt with 3.73's, and I've never been able to spin the tires. With only 3 psi, I can chirp them coming off the line, no brakestand or anything. It moves pretty good. Once I do some much-needed mods (rebuild trans, headers, open up throttle body) I might throw the 5 psi on and see how it does.
Im not sure on how many miles the truck has. When I bought it the odometer was broke, so it has sat at 76k miles since I've had it. I haven't found any leaks, and the transmission was rebuilt last year. And the rear end I haven't really messed with, I was thinking of rebuilding it with 4.11 gears or maybe 4.10.
My Budget haha thats the funny part, at this moment none, but I wanted to know if this was even worth doing before i started putting back money for it.
Do you tow or go offroad? If not, I think I would recommend 3.73's. Lower RPM's for highway cruising, and since it would be supercharged, you wouldn't need the higher gearing for quick acceleration. It's a lot of money and work, but I think it's worth it. My kit came almost complete, and that's the key is to find one that isn't missing pieces. Supercharger, brackets for pulleys and tensioner along with the pulleys and tensioner that go on them. If it comes with the hoses for the radiator and cooling system, that would be great, but I think you could find them if you had to. There are also modified brackets for the coil and the throttle cables, in addition to an adjustable fuel pressure regulator that goes in the return line.
All of that was included in the original kits, so that should tell you if it's complete or if you need to track some of those parts down. My kit had all that and the chip below, and it was $1500, just to give you an idea of pricing. I haven't had any issues with bearings or the whipple, it's in really good shape. If you find a kit that's missing some of the stuff above, make sure you plan accordingly and that the kit is priced so you can afford that stuff (like the afpr, those are a little expensive).
There was also a PROM that whipple made for these kits, but it was an accessory. If you can find a kit with that included, it's great to have. Otherwise, you will need to get a custom tune.
The only thing missing from my kit was the included fuel lines, because the TB moves and you have to get flexible lines. I had to spend a couple hundred on my fuel lines, but I got steel braided with aluminum fittings and a fuel pressure gauge, so I know it won't need to be redone.
