IS there a reason why no company make a camaro/firebird 305TBI supercharger? I think many people who buy one just to see what they're 305 can do it a supercharger was offered...I'd like to start a letter going to various compaines to see if we could get any replies...maybe if they recieved enough E-mails, then might consider doing something...what do you guys think?

 

ProCharger's TPI kit would easily work with the addition of a carb hat.

 

Oh ya?...so i could get a "carb hat" and it should work?...i really don't know what a carb hat is...anyone even done this with a 305 TBI motor?

 

something like this

pressure plenum

 

I was pretty sure there was a centrifugal blower kit out there for TBI trucks, You could use all the stuff from that kit and use the brackets for a TPI bower setup. Maybe I am smokin crack too but I thought there was a TBI kit for trucks.

 

There is a whipple supercharger available for tbi trucks, don't see any reason why it wouldn't work on an f-body.

 

There are both ATI and Vortec kits for TBI (LO3 and LO5) trucks.

Otherwise, you’re barking up the wrong tree, they are not poplular enough and would never sell enough to make it worth while to make a setup for TBI f-bodies, especially now… though it would be easy enough to put something together.

 

As far as the hat goes, this is more like what I was thinking.
http://procharger.com/images/artwork/blue_camaro.jpg

 

Anybody know much about the whipple kit? Does the tb mount on the *** of the sc? Sideways?


Whipple Industries

 

What about fueling ? Does procharger supply a FMU like vortech? and if so, how would it work in a TBI application?

-- Joe

 

Yes, it would come with an FMU, but I'm not sure excatly how well the fuel system would work. The same setup seems to work pretty good one the TBI trucks, I don't see why it would be any different.

 

Well. Lets figure out the math.. if you pressurize the throttlebody to 10psi, and you're fuel pressure at the rail is 14psi (tbi pressure?) then not only are you getting a ton of air, but you're only using 4psi of fuel pressure. Lean, kaboom!

On a MPFI setup, the normal regulator will go 1:1 with the boost, so you'll be at the same fuel pressure 'rate'. So say you set your regulator to be 45psi with vac connected, with 10psi boost you'll see 55psi on the gauge.

Now the second part is adding fuel under boost. A normal MPFI FMU will go to typically something like 8:1 to add additional fuel to the point where you can no longer add fuel by increasing pressure.

But how much more pressure and volume can the TBI pump do?


-- Joe

 

Like I said, "I'm not sure excatly how well the fuel system would work".

 

A carb hat would work fine.

Whipple chargers rock but I don’t see how you’d fit that particular setup under the hood... on the other hand, whipples have such a nice response curve that I would work very hard to get it working…

Not exactly, the back of the diaphragm is open to the airspace around the injectors so pressure would go up with boost, so in your example you would actually still see 14psi across the injector or 24psig. It would still be lean but on a mild engine with some of the larger injectors out there you could program it to work.

For that matter, if you wanted to go even slightly extreme it’s easy enough to block off the FPR mount location on the injector stand and run an external regulator in the return line.

You need about 2:1 – 2.5:1 to make it work on a tbi… much less strain on things then doing this on a TPI setup.

Why does it matter? You can drop a 255lph pump like a GSS340 into a tbi pump hanger bracket like you can into any other FI 3rd gen. For that matter, for a more mild setup an inline booster pump will work fine.

 

here is my car:
Runs like a champ. It runs 8 pounds of boost, no problems at all with it. I am running 90 pound injectors. It took some tunning but all in all. Really easy to do. You have to run at least a 3inch hood in order to clear.

 

i think that plenty of people would buy a 305 tbi charger kit if one made available, maybe there should be a sticky from a to z on how to properly supercharge the 305 tbi

 

I think someone with knowledge/experience could do a 305TBI setup properly and make a guide for what to do and what parts/Items are needed

 

Toxinz

I just pm'd you but I thought others might like to know about that Whipple charger also. How's the clearance with the cowl hood? How does it run?

Mike

 

Is there any way to supercharge a 305 TBI without having to use a cowl hood or modfiy the hood for clearance?

 

Putting the supercharger on it was rather easy. Only took me a day. The problems I had were the pulleys, brackets, water pump had to be switched over so everything would line up. The hood has to be at least a 3inch cowl. You need a coolant hose for a k1500 series truck or one of those flexible ones from summit. You just have to remember that the kit is for a K1500 SERIES TRUCK. So if you run into problems look what it has that you don’t have. Since it is for a k1500 series truck you are going to need k1500 series serpentine brackets, as well as a short water pump and pulleys from one as well as the coolant hose. After that putting it on is a breeze pretty much bolt on and go. The kit includes everything from brackets to fuel lines. The only thing you need to do is adjust the fuel pressure regulator. And then tune it via laptop burning chips etc. My car ran 12.2 at 80 mph without tuning ( I know my gears are a little to big lol) The car runs like stock and cant even hear the charger until you get on it. I didn’t buy the kit new since the price of it is like 3000 bucks. If you want looks with performance then this is for you. If not personally I would go with a simple nitrous kit. I'll try to write up some info on all the things that I ran into later and what needs to be done.
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Their really isn’t a way to run it without a cowl hood unless you feel like cutting your hood and putting a scoop on it. I think a cowl hood is the only way to go.

 

Man your car is sick just when I thought there was no hope for TBI I see your car maybe I will have to keep mine and supercharge it