I don't know why I never thought of this before... I *think* my Holley Projection is a batch fire fuel system. All I need to do is drill and tap 8 direct port injectors into my manifold and wire them up to the Projection signal! DUH!!!!!! With the existing 900 cfm throttle body it should fuel my setup. Hellooooooo fuel injection!

That would kick *** dude. FI rules

Wow, injected and blown at the same time! You are my G0D

That is kewl, now do you want to trade cars, then you can have the fun of another project

See, that's why it pays off to go really really sloooooooow Imagine if I hadn't taken 3 years already I wouldn't have figured this out

It was so stinking OBVIOUS too!

You realize what this does for hood clearance too, don't you? What is the actual throttle body... maybe 1 inch? It's short. Put it that way. Can you say, small cowl??? OH YA!!!

harwood??

QuickTrip,

I don't understand? Are you planning on using the current blower and a FI TBI or are you going to change blowers like a centerfugal style like mine with a tpi intake system? Or did you find a FI intake with a mount for a carb which you emit and get an addapter for your supercharger?? let me know. Also, what mods did you do to your vett? and what times does it run in the quarter?

So how meny O2 sensors are you going to have to run? and why not get heads that are made for injectors that way you don't have to worry about proper sealing. and you may have to worry about one injection system leaning out the other, plus both of them leaning out at the same time causing problems?

Other wise it will it is a really cool idea.

Craiger - My idea is to take my original Holley Projection system and mod it. The Holley system is a 900 cfm 4-barral throttle body system with a central injection system with 4 injectors mounted above the throttle body. The idea is to remove the injectors leaving only the throttle body and to install 8 new injectors in the blower manifold, effectively making a multiport system. I can use the signals that drove the 4 original injectors to drive each bank of the new injectors. Then program with my laptop accordingly to tune the car.

Tecker - Injectors are mounted in the intake manifold, not the heads. Also, there's only one injection system. Old one is gone (see above). I'd use a single 02 sensor.

I can drive 8 high impedence injectors up to 50pph, which supports 800 Hp. To use low impedence injectors I would have to use a seperate injector driver but the Holley system can't support that option. The only draw back is the high impedence injetors are kind of slow to respond at high flow rates like 50pph. No real biggie. It will be fine.

Craiger, the Vette was a 0.03 over 355 LT1 with a stock cam, stock injectors, and stock computer with a Crane ignition box and boost timing master. It was on the limit and would have benefited a whole bunch from a better fuel system. It had Crane Gold 1.6 roller rockers, stage III ported LT1 castings, intake was port matched and polished, 52mm throttle body, JE forged pistons at 9:1 compression, custom ported MAF sensor, SuperComp headers, exhaust, single mass flywheel, and 3.45 gears. The supercharger was a Vortech V1 with a 9 psi pulley. However, by using a "powerpipe" such as those invented by Anderson Ford in Illinois it actually developed 12 psi of boost. The power pipe is simply a large low-restriction intake to the supercharger. ANYTHING you can do to free up flow to the supercharger pays off big. All told it ran 420 RWHP on pump gas and ran a 12.2 quarter at 122 mph on the normal street tires. Dang healthy for a stock cam, stock computer setup. Never had slicks on it. I was advised by Ed Wright (Corvette tuner) that simply switching the cam to a Comp Cams profile he has would pump it up to 525 RWHP on pump gas. Oh well. I didn't want to tear into everything.

Jon,

I had an 87 with a vortech ( I think it was either a t trim or s trim? been a few years) Anyway, i had the super ram intake, tws heads that were ported on the exhaust side..by the way these heads made great power. I had the G2's and the valve guides were not bronze, thus, they went bad after 7K miles custom cam @.050 215\224 on 114 lca, roller rockers, Hooker supercomps. I think it hit 489 rwhp on the dyno with 9lbs of boost.

I have been thinking of fabricating a 3inch manadrel pipe for my paxton? It currently uses a 3inch hose I"m sure you know what i am talking about. Anyway, Do you think this will help my supercahrger? Also, do you have the prom kit? I ahve been considering purchasing it but I can have one burnned on teh dyno for only 150 more that the kit and the chip will be perfect. What is your thoughs?

When are you comming back to the northwest???????

Your Vette was rockin', man! Didn't you say before that it ran mid 10s?

If your hose isn't uniform diameter the new pipe is going to help. Even having a dirty air filter could hammer me by 2 psi of boost. I'd call Atlanta Chassis Dyno http:www.atlantachassisdyno.com before fabbing one though. They made be able to supply you with a pre-fabbed plastic pipe like mine that fits right in. The price is decent too.

I do not have the PROM kit. My personal desire is to leave that to the professionals. It's true that you can "super tune" your car on the track but are you really going to take the time to do so?

I'm having too much fun at CAT, man! I wish I could have the best of both worlds and be back home too. One thing nice about this area is it's central to a LOT of the big time car performance people and racing events.