what could i beat with my stock 305 tbi? i know every one says that tbi's r the slowest f bodys but what could i beat in a race?

 

hah there definetly not the slowest, every heard of the lg4's(carbed) or the 2.8 v6's, or the lowely 4 banger camaros(what the hell was gm thinkin?) yah tbi's may be pretty slow, but not the slowest, ive actually beaten my friends 87 iroc(305 tpi auto) beaten a vw vr6 with 5speed, beaten a bunch of riced out cavalir z24's and other riced out cars, actually the only race ive lost so far was against my friends 96 talon, but thats cuz he has mods, all ive had done to my car was exhaust and open air element, do those 2 things and maybe a chip intake and cam and you should be pretty fast

 

solid

 

Yes. Head over to the tech articles and check out "Ultimate TBI" articles. Do that stuff. It will unchoke the TBI unit, and even if you think you can;t do it yourself I hear there are some on this board who will do it for around 50 bones. One of the main reasons the 305TBI's are such dogs bone stock, is because the factory TBI sucks major ***.

Get an open air element (non drop-base)
An aftermarket intake manifold
A TBI spacer (one inch)
A TBI 'flow enhancer' piece (makes happy with the spacer)

All of these are relatively cheap mods, the most expensive being an aftermarket intake manifold for around 150-250 bucks. These will unchoke the TBI along with the 'ultimate tbi' mods and make the car run significantly quicker.

 

what intake manifold would u recomend to use?

 

Nothing until you do complete exhaust, cam change. Or maybe after gears and torque converter.

 

damn marks right i forgot you gotta get better gears, if your car is a auto it most likey has like 273's out back, you should go with either 343's or 373's out back, then get the edelbrock cam/lifter/intake manifold set, do full exhaust then youll be stomping on cars

 

Why bother modding tbi? It's the worst induction system that GM has ever cursed a performance car with. Modding TBI is like modding a Honda. It'll get great gas mileage but will barely, if at all, break into the 14s, with a 350 under it. I suggest not wasting your money on tbi, instead waste your money on switching over to a real induction system, such as a carb or to a much more limited extent tpi. TPI is just as bad, needing thousands of dollars worth of mods if you want to go very fast but at least you can use it if you have emissions to worry about.

 

i dunno inwo, tbi might be a slow induction system but at least its simple and doesnt cost alot to mod, unlike tpi, carb is ok except it depends on the weather as to how it runs, its all a matter of personal preference

 

so ur saying dont even bother with my car since i make a solid 6 bucks n hour and cant afford a $600 exhaust system ,cam change ect..... non of those cheap mods with in under 200 dollars per mod will not make ne difference? until i do those mods recomende by Mark A Shields

 

Sure, the free mods will make a difference. Will it put you into the 11s? No. It'll probably allow you to hang with stock 80s Buick Centuries or maybe stock Civics though. TBI was the worst thing that could have been put on a performance car I'd say. Maybe someone else can think of something worse though...maybe.

 

hmmm, from what i remember, the LG4 was about equal to the L03 in performance, maybe even a little better. anyone get a 16.0 out of their 100% bone stock TBI 305, cause i got that out of my stock LG4
come on, its not THAT bad. any car needs a couple thousand to hit 11s and such. ive only put a grand into my TPI Vette and am hitting low 13s. thats not to bad for "sucky" TPI

BTW- in reference to the original question, you wont see the peformance you want out of a 305 TBI motor unless you do heads/cam/gears. id recommend Vortec heads, a Votec TBI base manifold, a good cam (like the ZZ4), and a switch to 3.73 gears. those mods, in addition to exhaust, should get you well into the 13s

 

i like tpi

 

ok im pretty sure lg4's had around 160 hp, not as much as l03's plus there carbed so they dont always run great, and to inwo, dude stock civics, common now

 

little mods here and there will help, will you be taking out C5 vettes and stuff, not a chance...

It really depends what your goals are, if you want just a little more power then do some free/cheap mods..

If you're serious about going fast ditch the TBI, just don't post that on the TBI board though, according to them its a superior system yet barely anyone can get into the 13's with it

 

I am not trying to make you waste money... TBI is not a great induction system. However, so what?! You got it right? Rock what you got! Any gearhead goes through the common modifications:

Intake improvement
Exhaust improvement
Valvetrain improvement
Power transfer improvement
Traction improvement
Ignition improvement

Right? So just forget that you have TBI (sort of, you know don't let it get you down.)

DO what I said, and unchoke the TBI. You won't see what the total effect you facilitated is until after you unchoke the exhaust side. You have to do it anyway right? Somewhere along the line... IMO the factory TBI needs to go first. Everyone else had good ideas as well, although I would tackle those AFTER improving the TBI unit, as the whole TBI unit can be unchoked for roughtly the same amount as an exhaust system (heads & catback)

Don't be down! You can make decent power with a TBI you just need to attack the choke areas first. THE TBI itself, the gears, the valvetrain. Then like someone said "You'll see thirteens easily"
and you will. Just be patient, save money, be patient, save money etc and good luck!

As far as what aftermarket manifold - do a search on the TBI board. There was a topic of the week post not to long ago that covered just about every single-plane aftermarket manifold for a TBI car and has plently of info enough for you to make a sound decision based on price/performance.

 

TBI with the 2bbl throttlebody is a POS. It has what 450-500cfm on the stock throttle body? By the time you upgrade everything for tbi to reach the 14s you could have had an 11 second carb or 12 second tpi. Simply put you CAN rock what you got but in the end it's not worth it. TBI in any semblance of stock form really is that bad. How many of them are in the low 14s again?
This is already far off topic, lets get back to the whole "what can he beat" part of it. I'd say you might have a chance with some of the older cavaliers and some of the older suburbans. Anyone else feel like contributing to the street racing aspect?

 

I got 15.48 out of my LO3 stock. im sure its faster now though, with the little mods i have done.

 

impressive. however, if my car was a manual, and it was the better LG4 (87' model) im sure i could have matched your #s.

BTW- was that 15.4 run on a Gtech as well (like your current sig time), or was that at the track?
hp#s arent everything. my Corvette makes about 75 RWHP less than a stock LS1 car, but runs faster than one through the 1/4 mile
as long as the car is well tuned and cared for, it will run fine. also remember that an LG4 has 4 barrels, where the TBI unit only has 2. theres more potential with the carb setup

 

geez inwo you are so dumb, you give lo3's no credit at all, saying how they can only beat old cavaliers and suburbans, pizz off dude, like i said ive raced numbers of cars, including my friends tpi iroc and beat him, ive beating tons of fairly fast cars and beaten, maybe the only lo3's youve seen were crappy ones that were out of tune or something i dunno but your info is wrong

 

I give credit where credit is due. Here it is not. If you spend LOADS on mods then sure it can potentially be fast. I have seen a 12 second Civic in fact! Heavily modded tbi cars certainly can keep up with many things. The fact remains 2 bbl<4bbl. If you think that 500cfm is good enough for a modded engine you got another thing coming. Regardless this is not within the scope of this section of the messageboard. If you want to see what the rest of thirdgen.org thinks about this subject ask a question on the general tech board. Lets get back to street racing mmkay?

 

as far as "'what can I beat?" ..I'm embarrassed to say but a few months ago my wife's car ('95 cavalier, totally stock)had the trans go out and we went to pick it up from the shop in my '89 rs (also totally stock) and as we were leaving I decided to mess with her so I nailed it and ,I'm ashamed to say, she kept up.But it get's worse.When we get home I talk to her about it and she says she didn't realize I was beside her and she wasn't even trying!!!That's gonna change when taxes come in!!!!

 

Come on, TPI isn't that bad, 92 Z with the 350 TPI, Sure my car is an auto but it sure as hell can move, Look at my sig

 

i have beaten every tpi i raced with my tbi and all i have is a high-flow cat and a muffler

 

non-sense, TPI is perfect for any engine making power between 2000-5000 rpm, that's a lot of engines man. for a high revving street crusher engine TPI won't make the cut, but Mini-Ram and Super Ram systems are very very expensive for those engines. There are quite a few crate engines operating within the 2000-5000 rpm powerband, and making big power, than a TPI system would work well on. Allchevyengines.com's 350 HP 350 motor will work perfectly with stock TPI and if you make more money later on, you can squeeze another 20-30 HP out of the engine with a mini-ram or something that opens it up past 5000. Still, TPI is great, TBI I can't see being useful for performance applications, but let's not forget the worlds fastest street legal car, the sledgehammer vette, had a TPI induction unit, albeit a modified one, it was visibly similar to the TPI under your IROC or Formula's hood.

 

you could've beaten any 350s or LB9s with a TBI, it's not possible with those mods.

 

not 350's, but i have beaten a few 305 tpi's, its true its true, and to ponykiller, your car must not be in tune man, cuz ive beaten quite a few stock cavalier z24's, try and give you car a tune up and see what happens

 

The TBI is not a bad induction system. Some people just need to come off their TPI thrones.

Do your free mods as per the tech articles. Do a good tune-up. Work on the drivetrain first. Get better gears and a posi and you will be pleasently surprised. Posi=$100 from SLP. Gears can be found cheap all the time. Most gears are pretty much bullet-proof, so I wouldn't worry about spending $180 on new gears. I got mine for $40 off EBay.

As for what you can take stock. . .well, for my fairly stock TBI (with the exception of a good tune-up), I've beaten 4.6L T-Birds, numerous Hondas and Acuras, and a crap load of other miscellaneous vehicles.

Just remember, the classifieds here and EBay are you friends!

 

Sure buddy keep on dreaming. I mean with those mods you couldn't beat a V6 Malibu unless you have a factory freak.....The TPI's you must have been racing were probably out of tune, parked or not even know you were racing them....I have beaten alot of 305 TBI's with my grandpa's 01' V6 Malibu and its stock hittin 15.9! I mean come on bro...no bs here....if you have timeslips to back it well then post them so maybe some of us can belive you.....cause right now you should close your mouth cause all I smell is .....

 

vicious quit pickin on the newbie, i swear i dont know what it is but there must be something special about my car and others with tbi cuz i know when i raced a friend in his 305 tpi then he knew we were racing and we took off at the same time, remember his car only has 20 extra hp from the factory and have nearly the same amount of torque, so why dont you quit hating on tbi's, there not the bad!!

 

a 305 TPI with a peanut cam isn't any more powerful than a 305 TBI really. the LB9s with the L98 cam in them are completely different though.

 

89rsimpreter, newbies are cool and I don't mean to pick on anyone..I just say what everyone else is probably thinking too. I call it like I see it you know what I mean...there are alot of BS posts and to me this seemed like one. I mean he comes in here just blurting out sh*t! that ain't right I mean at least get to know things before blurting things out like...I beat all 305 and 350 TPI's...I mean come on what kind of BS comment is that...other than that he is cool, I don't mean to hate on anyone or pick on anyone I would just like more facts, like the other post about a guy saying he beat up on everything and when you ask for his specs he can't tell you cause it's BS...AARON

 

i understand where your comming from, but the guy didnt say what tpi's he raced, gotta be carefull and read it correctly, maybe he has only taken on the tpi's with the so called peanut cam in them, im not sure but the only point im trying to make is that there are some tbi guys out there running some pretty decent times

 

Maybe u should race my 85 Iroc-Z buddy. Since after all TPIs suck compared to ur almight TBI.

 

Lots of guys around here swear the 3.1 V6 cars can just about keep up with the L03's...and I know my slightly modded 3.1 is no where close to any TPI car (I did beat an 84z28 LG4 auto though). So maybe you'd like to reconsider your statement?

 

:: Hey my dick is bigger than yours! ::

:: No! My dick is biggest! ::

:: Fools! I have the biggest dick! ::

:lala: :lala:

 

my dick is tiny...
but it can still work just as good as some of the larger ones

 

somebody want to answer the original question because I kind of want to know

 

LAF, Stealth Ram retails for $500 complete with adjustable fuel pressure regulator on thunderracing.com, 4500 rpm brick wall problem solved. TPI isn't the curvy runner/plenum design, any batchfired, computer tuned and adjusted fuel injection system is a TPI. and no you don't need to spend thousands to get a stock-like TPI fast, you just need to build your motor around a milder setup that doesn't need to rev past 5000 rpm to make power, it can be done, but it's just not as fun anyways, TBI guy, anything running a 16.2 or higher would be a good race for you, anything running less than that is out of your range stock. 25thRSguy, you are telling us that your low 16 second car can beat a mid 15 to mid 14 second car? get real... RS = slow, I know this, I've owned one, I never ran quicker than a 16.2 with exhaust and free mods. Hey it was my first car, I was in HS, and it was cool though. But then I wanted some power so I bought my IROC and ran a best of 14.6 my first day at the track, completely stock. yeah, Id like to see you run a 15.6 with your RS...

 

:sillylol:

rx7speed's playing with his wankel again...

 

Sigh...my l03 I hit a 14.7 with out even touching the engine, on street tires. Full exaust headers - tail pipes, 3.73s, limited slip and some lower control arms. Right now its not running cuz im in the middle of a cam, intake, head swap. Cam got put in today, zz4, heads are getting milled tomorrow [(if the guys open)vortec heads with upgraded springs] and my performer rpm air gap intake. I should be deep into the 13s still useing my stock TBI unit. Ya it doesnt flow 2 much, but holley makes a 670cfm unit for lil 0ver 300 bux. L03 just isnt given any credit cuz almost everything on it sux stock. But rip off the top end on a tbi and rip off the top end on a tpi and a carb, and what do ya got? A SBC, so if you're ok with high 14s you can do it with out even touching the L03. Want somethin a lil faster, cams gotta go it sux ***, heads gotta go they suck ***, and intakes gotta go it sux *** aswell. Hope this helps some.

http://eastbayracing.com/viewthread....age=1#pid37807

my parts if anybody doesnt believe me. Check out www.cardomain.com/id/jesasaurusrex as well.

:lala:

 

that's believable, because you've got a 5-speed and 3.73s, you're prolly makin like 200 HP and as any good third genner knows a 83-85 L69 powered Z with a 3.73 will run high 14s with a good driver...

 

a 14.7 on a bone stock TBI, what gears were in the stock rear end? and the five speed must be nice...I wish my B2L/L98 had a 5 speed...heck even a T56!...my GTA is going about a 14.8-14.6...just got it running again after two months of just sitting there( yeah i got board with it )...., but I'm gettting it going again...AARON

 

Should be done on tuesday man I cant wait, 02 SS camaro watch ur back :lala:

 

ive only rode in one 305 tbi camaro, and i can say my 94 with a 3.4 pulls much harder, and the 89 i had with a 2.8 pulled nearly a hard, i say that a STOCK 305 tbi is slow...as far as what can u beat...id say u can beat any stock 2.8 camaro, and 3.1's. 4 cyl stangs, most stock imports,definally a dodge neon..lol

 

 

Where u stationed at Gunny?

 

Atlanta is my home station

 

Dope im a Poolee right now, ship out dates on teh 4th of august, tryin 2 getin ASAP tho