BMmonteSS

I know alot of you guys have been asking about a TBI specific supercharger, well I found one on ebay, it's a whipple and it looks like it just bolts to your stock intake and your tbi mounts to the back of it sidways. Funky lookin. I'm going to post the link, but make it so you have to cut and past, because direct links to ebay are forbided, if this still breaks the rule, let me know.

va454ss

iTrader: (1)

Vortech makes a TBI specific supercharger kit also.

BMmonteSS

Yeah I've seen the vortec units, mount just like a carb. I've never seen a whipple setup like this though, the TB just bolts to the back with the bores facing the fire wall. Wierd

Avenger007

wow i guess you can kiss hood clearance goodbye with that setup. btw did anyone else notice his other auctions...

sunset92

i have seen the whipple many times! and it looks like a great setup but... it only boosts about 50% and... its probobly the most expensive unit out there! it was like 3,300 from whipple. and i have heard they don't have the best customer support out there.
there was a post on several boards about a guy who had all kinda bad luck with his kit but eventually got it resolved. also you would need to use the stock tbi manifold because the other tb intakes will not work with the whipple according to the manufacterer...

90RS305

Thats perdy cool, but I do need you to please edit that post and make it a permanent picture. Unfortunately your not supposed to link to eBay auctions due to the fact that they are only temporary and this thread will become for the most part dead space once it does. Thanks!

Bruce (90RS305)

BMmonteSS

Here's the pic of the back side.

Cadillac

I'm sorry... what is the link to the auction or at least the name of the ebay seller?

Really curious about this.

EDIT: I found it: http://cgi.ebay.com/ebaymotors/ws/eB...sPageName=WDVW

Sounds like it would fit on an L05. What about an LO3?

BronYrAur

iTrader: (1)

Quoted from our Moderator above:

BMmonteSS

small block is a small block, since they are both TBI then that SC would bolt right up. Your still going to have problems with fuel and the ecm seeing the boost.

Red25thRS

ya i talked to a guy from whipple about that...i emailed them many times.....they said most of the trouble would be clearance to even get it on....then u gotta worry bout ecm crap.....i would be nice to have just be like hey i did it...i got a whipple on my 305...but id rather have a fast n/a 350

Cadillac

Unless I ditch my car, this is the only option besides a turbo. Since I can't get rid of the engine size (VIN says 305, smog test requires 305... that's the dang law).

I'll tell you, I've been obcessing on this SC. It's good for me to hear there would be other problems with hood clearance and ECM. Still... look at this bad boy:



Looks like there would be plenty of room under the hood looking at that install. But then, what do I know?

90RS305

That would be cuz' thats a truck. I have a 94 Suburban with a 454 and he hood misses the TB by a half a foot. One of those super chargers would be perdy fun in that thing

BMmonteSS

You can get around the smog test if you really trully know what your doing with chip tuning. I just can't imagine throwing a 3000 dollar SC on a 3000 dollar car. I could do my whole engine and a turbo setup for 3000$. Granted I have good friends in the junk yard buisness.

Red25thRS

i dont have emission testing...but why would u have to keep the 305.....u tellin me that the people that do those tests can visually tell the diff from a 305 and a 350.....cuz last time i new u couldnt visually tell a 305 tpi from a 350tpi....or do they get ur block castings and run that...if they do thats a bunch of crap....cuz my friend bought a z28 thinkin he had a 350 cuz the guy told him that but it was a 305

BMmonteSS

They check the vin to see what engine you have, then they set the test parameters based on that. So you would have to make a 350 pass the test for a 305, which in some states is the same. I know in NC they only have to pass an across the board limit, well at least they used to, all OBD 1 vehicles no loger have to pass a sniffer. You have to know exactly what the laws are in order to get around them. You just have to out smart them, thats all. I know guys who are running an egr valve just for looks and can pass the sniffer with flying colors, because they did their HW and can tune their cars.

90RS305

Couldn't have said that one better myself! Also in some cases, depends on which facility you go to as well. Last time I took mine for emissions (which luckily I never have to do again ) I had my open element on and everyone there was like "ohh its shiny! Does it work well?" Some places will fail you just from seeing one of those...

Gunny Highway

iTrader: (1)

There's a turbo setup out there for a TBI?

BMmonteSS

Nope.....I own an angle grinder

When I finnaly get around to the turbo setup it'll have 8 injectors that are about the size of the stock 305 TBI injectors. I do plan on using the 454 TB as the air valve. It's the cheapest and easiest way to meter air for me right now.

Cadillac

Well, that SC sold for right over $1800. Not a bad deal if it's in good shape I imagine.

Question: is buying a used SC a lot like buying a used turbo: possibly a bad idea due to unknown, previous abuse/damage?

Fast355

iTrader: (2)

If you dropped an L05 into your car and used the 350 specific stuff (knock sensor, ESC module, injectors, and prom chip) the inspector would never know the difference. Externally the blocks are the same. The only difference is the bore. Just keep the engine looking stock and they would never know the difference. Its not like you could actually see the casting number on the block nor would they check it.

Also the difference between the 305 and 350 in a smog test is negligible. The 305 will run a fraction of a percent cleaner due to the smaller bore but that is it. Both engines have to pass the same standards.

67 ss

I am using that blower on my car. Though it took some modifications to make it fit under a 2" cowl hood. I have not got much time with it yet as I am still in the process of getting the car back in one piece.

Cadillac

Slick!

Guessing that is not a 3rd Gen?

SchwarzCamaroRS

I have a 350CID in my 91RS and i passed smog, and they KNEW i had the motor, i told them 5.7L, and i DIDNT get it refferee'd... as long as u change the knock sensor, esc module and the chip, you'll be fine

89C2500

67ss,

I notice you're running an Edelbrock MPFI TBI conversion manifold. That looks like a good combo! Did you need to make any modifications to the Whipple mounting mounting brackets or the Edelbrock intake to use this system with the Whipple blower?

67 ss

Yes I had to have the support bracket that comes off the nose of the charger remade. The edelbrock intake sits higher then the stock intake does. I took a piece of cardboard and made a template to what I needed then took to a machine shop and they fabed it up for me. But most everything else bolted right on with no problems.

3rdgenstm

In NC, Yes-- All OBDI vehicles are across the board regardless of what you have in the vehicle. There is a benchmark and you have to be under it. There is still an emissions visual inspection, meaning they have to see a smog pump, cat converter, egr, etc. If you live in an emissions county, you still have to pass the sniffer too.

if your vehicle is 25 years old or older, you just need a safety check.

there was talk that anything that wasn't OBDII will just have to have a safety check. Haven't heard if this has passed.

odddoylerules

getting smogged is easy. Just make sure that you keep all the stock emissions equipment for the visual aspect. I put a 355 in a 305 powered car, and got it tested untuned. In WA, all you have to do is have exhaust emissions that meet a certain standard, they dont test exhaust volume. For all that guy know, I had a 305, that burned nice and clean from the results of the test.

Psycho_91Camaro

I was thinking of doing this same thing, since a friend told me about it.

Poncho Villa

My .02---TBI blowers are cool yes, but not as much bang for the buck as some other options. As for smog laws vs. engine swaps, I'm in CA, and I'm pretty sure you can drop in ANY motor, as long as it is for your type of car, same year or newer, and has all the smog stuff on it. That's how the L98 and LT1 and LS1 swappers pass smog. Only catch is, has to be a stock setup, ie. a 350 TBI might pass cuz it lookin like a 305, but ain't legal--dropping in a 350 TPI is fine, because that was an available motor, but then you are changing out a lot of stuff.

Of course, the idea is to mod the TBI motor--in a Car Craft Magazine article, heads, intake, cam, and Holley TBI unit yielded something like 300hp, and close to 400ft/lbs of torque, on a Thirdgen 305, just the motor, and that probably cost under the price of a blower. However, props to all those blown folks out there. L8er.

Crusin' 1980's

ok...so does anyone have any pics of a supercharger on a 305 TBI LO3 engine?...i have yet to see any....i would be interested in finding out what performance can be found using a sc on a LO3

Gunny Highway

iTrader: (1)

^^^best screen name ever^^^

Poncho Villa

No pics on hand at the moment, but do a search, I've seen plenty--most common is the sidemounted supercharger, kind of looks like another alternator, forcing intake air through a "carb hat" or "TBI hat"--basically an airbox on top of the TBI. The Paxton, maybe? Anyway, I believe power gets up around 275hp with that setup.

Ronny

iTrader: (1)

Projection sells a TBI blower. seems hood clearance is a non issue as they offer 3 bonnets of varying height. serves GM 1988 to 1995 5.7 L. i expect this is a truck application only. part #1GD212-SCI. they disclose the need for a 2 or 3 bar sensor. 2 bar allows up to 15 psi. 3 bar at higher boost but you lose resolution(drivability). also they state the ECU needs to be reconfiguered to the sensor. likewise they suggest the injectors(2-4) need to be properly sized.