I believe one bit was cone shaped, and one was a cylinder.

 

They are called non-ferrous, and it kinda goes with you pay for is what you get...I have around $500 in bits around here, from small 1/4" ball type to 2" in cones on upto 8in shanks.

I have bought new 1/4 ball types and had them snap the head off within 2 minutes of using them...thats about $30 a minute

You can get cheap sets in Summit for around $60 for 3 of them. They will last long enough to do what you need!

Becareful the first time you hit aluminum, they eat away the material quick.

 

Good advice - I have a port that we had welded from getting too aggressive...

 

thanks alot guys, thats pretty much all the info i need.

now i just need to get the manifold off, im still pretty new to taking apart engines. i know how they work and everything, just not down to the technical stuff.

 

CFI aka ceize fire injection. Just rip it out and go for something else GM had major problems with CFI being its the first gen eletronic fuel injection (fuel mixture, timing, and throttle responce) and its the second reason why the 1983 Corvette wasn't produced ( GM in 1982 to 1983 had a labor strike) poor quality, poor designed (no body designs wasn't finalized)and the new system wasn't fully tested. Most of the originals 83 f-bodies owners would recieve RECALL NOTICES in the mail (puter failure and emissons). In 1984 there was no fuel injected f-bodies(except carry over's) just the relieable Q-jet with electric mixture control valve. if it runs don't mess with it there is no performance up grades for CFI's. But if your worried about performance upgrade

 

I just sold my 84 vette and bought a 94Z only because it had air and I have another vette anyway. I really miss the 84. Almost 200k without major problems...and yes, there are a bunch of things you can do to them. TPI fuel pump, K&N, TB enhancements, and if you are real bold you can port the manifold. Maybe someday they will be a collectors item as the bastard gm wanted to cover up.

 

it's cease not ceize. CFI wans't GM's first attempt. the 57 corvette had a rochester mechanical fuel injection unit on it. the RAMJET motors intake design is a spinoff from it (in looks).
hhhmmm no performance upgrades for a CFI???? gee, and to think cam, headers, full exhaust, heads, x-ram, porting of the stock intake, etc.... those just CAN'T be upgrades????

well thanks for stopping by.

 

Please read that again. I said efi no mechanical. Anyone can do THOSE simple upgrades on any type of engines I'm talkin CFI Computer, injectors, tbi units, and sensors. that type of induction system is a manufacturing defect. It can't hold up to the heat.

 

Ok, let me get this straight. You CFI guys are asking a guy who has NEVER ported ANYTHING to port. I've seen beginner port work, it isn't usually pretty. Then you also add in the price of the tool and bits and the price and basic PITA and cost of finding a Vette CFI and you say this is easier and more affordable than buying readily available parts that will bolt right up? What if he messes the intake up? Gotta buy another one or get it welded up and start over. How much will that run? If he plays it safe and takes it to a machine shop, how much is that going to cost? Its funny how guys forget how complicated things can be to a beginner.

But I forget, I'm just being narrow minded. Never mind if I've helped friends on their cars w/CFI. They were always having problems. If not throwing my cash away on CFI is narrow minded, then I'll proudly be narrow minded. I wouldn't hot rod a Pinto either. But hey, its your car and your money so spend it and keep the economy running. Sad thing is, at the end you'll probably still get beat by a stock naturally aspirated front wheel drive 4 door V6.

 

yes you did. my mistake on that one. already a guy over at crossfire injection vault has made an ECM that you plug your laptop into and make changes. has it's own programmer built into it. you can get larger injectors, have them bored to 2", and you can still buy sensors for it.

 

And that becomes more cost effective over a carb and intake how?????

 

read it again. he asked us what we used. we didn't tell him to port it himself. you can get used intakes off ebay. never said it was easier. oh by the way seeing as you can't read very well, i'm a TPI guy. and for some reason you stay fixated on the CFI part of it. look at the forest, not just the trees. just because you couldn't fix whatever problem your friends were having with their cars still doesn't mean it's junk. i agree it's not GM's best idea at work here. but i don't tell a person that just bought one that he was stupid in buying it. i would've said something like well not my first choice to buy, but here's what you can do. besides ripping it all off and spending $700 and seeing little to no gain.

 

better driveability and fuel economy over a carb anyday. and seeing as how this person is new to this i'd hate to give him a carb and watch him tune it. and to quote you "Its funny how guys forget how complicated things can be to a beginner." gee put a carb on you may not be able to tune. or leave what's on there and do something that won't make it harder to work with. you know like the complete exhaust and tune up thing that gained 1.13 secs. you still haven't shown any proof that switching from CFI to carb made a gain. show me timeslips or dyno on just swapping from CFI to carb. we have. you need to stop while you're behind.

 

I already showed that $700 is a gross overstatement of the cost. and yet you still have yet to post prices of the mods it takes to make the CFI run well. I choose not to send someone on a journey of limited benefits and costly performance mods. The guy asked a question, I gave solid advice based on economics and what I know will run and will grow with any mods he does later. Even if later he builds a stroker motor. Just because my advice contradicted you CFI guys I become "ignorant" and "narrow minded." pro-CFI words there. How well does a CFI run with a larger engine if he decide to build one after he's been in the modding game for a while? You know as well as I do that you are never finished with a car. Once you get that feel for power you'll want more. When this engine goes who's to say he keeps the 305?

I also NEVER said he was stupid for buying a CFI. Once again, your words not mine. I also never said for him to rip it off the car right now, but if he is going to mod why not look into something else? Ya I made some blunt comments; it helps keep a cost/performance benefit perspective.

Yes, I saw you have a TPI and yet you seem to be a CFI guru in your spare time.

The reason we focus on the CFI part is for this reason. Think of it an an exhaust system. If you have several major restrictions you'll start removing/replacing them, but you want to replace all the restriction and modify one of the largest eventhough it still restricts flow. Basically, even after you mod the engine the CFI will hold you back and they are problematic.

 

your banking on all the used stuff working also. used carbs usually need a rebuild. what if the used distributor he gets needs an ignition module or pick up coil. it'll definitely need a cap and rotor. intakes usually nothing wrong there. i chose the ignorant word (dictionary defines as lacking of knowledge). the stupid part is when everyone goes rip it off immediately. guy says to himself (damn i'm stupid and bought a crappy car).
and thanks for calling me a GURU. i don't consider myself one, but i'm pretty good at what i do. but i like it. at least i will work on it and overcome it's one little problem, the intake port at the head. on the economics part.

he'll spend maybe $200 total buying a spare manifold and porting it ( or having someone who's done it port it for him). gee and it still runs without having to go out and buy jets, gaskets and power valves ( if it's a holley) and keep tinkering with it until it runs like it's supposed to. and when his engine goes, who's to say he'll keep the CFI? he may go TPI then. but for now what would his money be spent more wisely on? the complete exhaust and tune up for about $700 and get a proven 1.13 sec gain ( insert disclaimer that say individual results may vary), or spend $700+ ( or start with your $350 used stuff and have to buy more stuff to fix the used stuff) putting a carb and distributor on it and gain maybe .3? gee enter CAPT OBVIOUS on that one. listening to you guys he'll run out and buy the carb and see not much if any improvement. and again using your words "Its funny how guys forget how complicated things can be to a beginner." i think the exhaust is far less complicated for a beginner than the intake and carb. and if you would've clicked the link to the thirdgen.org thread you would've read some posts from a guy named tom400cfi with what you ask? if you can read into his name a 400CFI. and in his sig it runs 13.27 (can't wait for this response).

but in the end we'll see. again as i stated earlier your first post supported the guy in his endeavor. not needing to turn lots of rpm to make power. but at the same time offered him a $700 option ( $350 in your used world) to get minimal gains. and do something that as you said "Its funny how guys forget how complicated things can be to a beginner" may not be able to get a grip on. now you sent him on a journey that he can't get out of. at least what i did will put him on a road of gains without problems (other than the occasional header gasket replacement).