Supercharging a TBI?

[ryan34]

Is it possible to supercharge a TBI f-body? I'm thinking the boost will destroy the TBI setup, or is there a cetain boost amount that it will tolerate?

[DeWynter]

The ones I have seen a basically Carb setups converted to TBI, I wouldn't think that it would harm the TBI anymore than a carb.

[Benm109]

Is it possible? Of course!

The boost won't destroy anything, if you know what your doing . Every car has a limit to the boost it can handle. I couldn't tell you how much, though.

People have put superchargers on TBI motors, but there's no direct kit for us F-body TBI guys, at least anymore. There's a kit for the 350 TBI trucks, and some people have considered put it on their F-body, but I don't think anyone has done it yet. I think one of the other problems with supercharging a TBI is that they all have 1-bar MAP sensors, which means it's hard for the computer to "see" boost (to be honest, I don't personally know this, this is just what I have come to know). And, of course, with an SC, you're probably going to need to get into chip burning, too, or the car might run like poo (hey, that rhymed LOL).

Hope this helps, somewhat.

[ryan34]

I was just looking at this supercharger and didn't know if I could use it, its labeled under "non-vehicle specific (carb)" Just wanted to see if it could be done, plus if i was to supercharge i didn't want a masive amount of boost. I wanted to keep all internals stock. Here is the site i was looking at. Oh yeah, its a roots style supercharger so do they even use "psi"?

http://www.performancecenter.com/pro...percharger+Kit

[DeWynter]

A non intercooled SC is not going to net you much HP after drag has been factord out, maybe 50 HP if your lucky. The non intercooled SC cant run as high of boost and they take alot of HP to turn. Roots look nice but I'm unconviced that they will make you much HP on a "Stock" engine(Internals).

[Benm109]

All superchargers use boost (measured in psi), as far as I know.

I definetely think that supercharger could be made to work (but, of course, it'll take some time and $). The only think I would worry about with just the installation is if the pulley sticks out far enough. I think the later serpentine set-ups stick out more than regular V-belt set-ups. You can get an adaptor plate to mount TBIs on carb bolt patterns, too. I can almost guarantee you that you would need a taller hood for that blower, too. But, just like I said earlier, the car's going to need to be tuned bad, if you bolt on any kind of power adder. I myself am approaching the limits of the stock tune of 305 TBIs, even without any major mods (after headers, I'm in trouble ).

EDIT: I think DeWynter is right, though. It may be better to try and find a centrifugal supercharger, because this way you can run an intercooler and the stock hood if fabbed correctly.

[DeWynter]

There are intercoolers for the roots style too but it would have to be purchased seperatly. I have a friend with one on hs pickup truck (84). They arent as efficient as the other types.

[Benm109]

There are intercoolers for the roots style too but it would have to be purchased seperatly. I have a friend with one on hs pickup truck (84). They arent as efficient as the other types.

I didn't know that. It makes since, but I never thought about it. You learn something new everyday.