92 rs mods advice

a great place to ask bout camaro mods, uve guys helped me b4 with rear end gear and im wonderin if u guys can give me any more advice on performance mods i can do....heres what ive done so far....i have a 92 rs 5 speed, 305 tbi 5.0L....got hypertech chip, 160therm, 2 fans, fan switch, k&n filter, dual air intake, edelbrock intake manifold, new exhaust, got a 3 series carrier with a 3.73 gear (which u guys helped me out bout what my stock carrier n gear was)....eventually gettin edelbrock heads hopefully within a month or so....any suggestions, comments, advice would be great....thanks....

I didn't see headers mentioned, and a Holley TBI

sounds like you got it down pat. i bet 3:73's with a 5spd is a fun ride. and ya go with genopsyde and get a holly tb. they make a 670cfm throttle body which is substantially bigger than stock, and i think it plugs right in. oh and if your gonna pull the heads you might as well swap cams while you got er apart

if you are getting new heads, while your at it get some more valvetrain mods. roller rockers, tense valve springs (if the heads don't come with), get some hydraulic roller lifters (if you don't already have them) and a comp cams grind. all of that would be a good combination

yup it's already got roller lifters

yeah the 3.73s are a lot of fun. thanks for the help, all i need now is the money, of course after my 2 year clutch died on me....oh well

well if money is an issue, might i suggest a set of vortec heads??? they are bone cheap, especially if you get em from the junkyard, flow more than stage two bowtie heads stock, and with valve jobs, port and polish, and 2.02/1.60 valves i have heard they are absolute terrors. just have to buy a new manifold for the diff bolt pattern on the intake. but exhaust is well worth it. i just put edelbrock TES headers and flowmaster exhaust on my IROC and DAMN what a difference. desktop dyno says im runnin 280hp, and its normally pretty conservative, but id say 260-270 is probly much closer to reality.

oh and i myself have a set of vortecs out back, just waiting for me to buy the vortec/tpi intake, and have em worked over, and they will be my next mod to the car, well, no, my torsen with 3.23's is next but right after that, the intake and heads, and oh baby its gonna be a ride :)

2.02/1.64 valves WILL NOT FIT A 305!!!!
Largest you can go on a 305 is 1.94/1.50

And all of chevys V6 V8's after 87 were hydraulic Roller Setups... which means no gear drives.

My suggestion is this.
650cfm carb 4bbl (TBI sucks you will learn this)
Torquer 305 (58cc) heads (cheap but do a pretty decent job)
Get rid of those stock exhaust manifolds
Get a nice dual plane intake. (performer RPM is pretty good)
Get a decent cam (XR276 or something like it)

And start toying with LS1's.. (stock but still)

But expect that glass T5 to blow at these power levels!

Ummm well. As far as valves, and heads I agree with twinn. But as far as the tbi sucking, you do NOT want to have this discussion with me. With the 305 not stroked, I think the best cam for you would be the edelbrock performer rpm cam. It's a pretty roudy monster. Edelbrock TES headers and flowmaster cat back for exhaust. Holley 670 TBI, custom chip. I stroked mine to 335, well it's a bit more than that because I had the block bored. But if someone tells you that the TBI sucks just kick em in the balls.

Don't forget about keeping it street legal, some of your suggestions just might not be possible.

Some of the carbs have provisions for remaining legal. TBI does sucks! Its a glorified carb!! With all the money your going to dish out to stay tbi and prolly run high 13's at best. If you dont have to worry about emissions just keep your cats (federal law) get non a.i.r headers delete your a.i.r pump get a nice 650cfm 4bbl carb. And why Flowbastard exhaust? Why not Edelbrock or Hooker or spintech? Every bastard out there has Flowbastards. I have hooker on my 89RS and it sounds so much better!!!

This cheaper setup will blow the doors off of a 305 with a 2bbl tbi unit.
If you want to argue go on www.thirdgen.org www.mofba.net
They will more than most likely repeat what I have said. TBI IS JUNK!!!

Ummm well. As far as valves, and heads I agree with twinn. But as far as the tbi sucking, you do NOT want to have this discussion with me. With the 305 not stroked, I think the best cam for you would be the edelbrock performer rpm cam. It's a pretty roudy monster. Edelbrock TES headers and flowmaster cat back for exhaust. Holley 670 TBI, custom chip. I stroked mine to 335, well it's a bit more than that because I had the block bored. But if someone tells you that the TBI sucks just kick em in the balls.
TBI isn't even a glorified carb, its a crappy attempt at making a fuel injection system based on 70s technology. No offense, but I don't think someone who strokes a 305 instead of throwing them in the dumpster where they belong should be giving advice on which induction sucks and which doesn't. a 305 bored out to .060"+ still can't accomodate any valves larger than a 1.94"/1.5" so making a motor that is stuck with an airflow restriction LARGER is just a waste of money, cause mod for mod, the 305 itself wouldn't be any slower. That aside TBI DOES suck, it is nothing more than a computer meddled carburetor. it doesn't give better fuel economy than a carb and its not any cleaner to run, and because of their design, fuel will build up on the intake runner walls rather than getting the proper amout to the engine (look at an EFI system, the injectors are right on the intake runners for the heads so they don't have to travel much distance yadda yadda). if you are going to go fuel injected, get an EFI multiport system (NOT a TPI junk but a stealth ram or a miniram of some sort). If not, get a carb, toss the computer and load of useless sensors.

TBI isn't even a glorified carb, its a crappy attempt at making a fuel injection system based on 70s technology. No offense, but I don't think someone who strokes a 305 instead of throwing them in the dumpster where they belong should be giving advice on which induction sucks and which doesn't. a 305 bored out to .060"+ still can't accomodate any valves larger than a 1.94"/1.5" so making a motor that is stuck with an airflow restriction LARGER is just a waste of money, cause mod for mod, the 305 itself wouldn't be any slower. That aside TBI DOES suck, it is nothing more than a computer meddled carburetor. it doesn't give better fuel economy than a carb and its not any cleaner to run, and because of their design, fuel will build up on the intake runner walls rather than getting the proper amout to the engine (look at an EFI system, the injectors are right on the intake runners for the heads so they don't have to travel much distance yadda yadda). if you are going to go fuel injected, get an EFI multiport system (NOT a TPI junk but a stealth ram or a miniram of some sort). If not, get a carb, toss the computer and load of useless sensors.

1992RS is pretty much a guru when it comes to TBI 305's and i highly doubt that any of your carburated vehicles would run with it. and guess what moron...EFI if tbi,and TPI. same thoery except the injectors are in the manifold on a TP instead of above a throttle plate, which if fact, actually creates somewhat of a tunnel ram effect. and if you devide the lb per hour of 2 tbi injectors you get the equivalent of TP injectors. while i will agree that the stock throttle body is a restriction and more less breathing through a straw, a 670 holley tb costs the same or less as any good carb. people like you just dont have to brains to use an ohm meter and test 6 sensors, so in turn you swap intake and carb and call yourself a mechanic. and if you do a little reading on the internet you'll find that tbi makes more low end power than tpi. tpi starts making power at about 1500rpm

1992RS is pretty much a guru when it comes to TBI 305's and i highly doubt that any of your carburated vehicles would run with it. and guess what moron...EFI if tbi,and TPI. same thoery except the injectors are in the manifold on a TP instead of above a throttle plate, which if fact, actually creates somewhat of a tunnel ram effect Wrong, not at all you stupid shit, there is no "tunnel ram effect", wtf kind of keyboard physics bullshit is that? a multiport system sprays fuel directly into the intake runner of the cylinder head, a TBI sprays it into the intake manifold first, thats MORE distance it needs to travel and unless you've ported the fuck out of that intake, thats MORE places for fuel to accumulate. it is the same theory as a CARBURETOR only it has a computer attempting to control the AF delivery rather than the carburetors assortment of screws and jets. you might as well call TBI guru the guru of slow cause thats about all he's good for. and if you devide the lb per hour of 2 tbi injectors you get the equivalent of TP injectors. while i will agree that the stock throttle body is a restriction and more less breathing through a straw, a 670 holley tb costs the same or less as any good carb. people like you just dont have to brains to use an ohm meter and test 6 sensors, so in turn you swap intake and carb and call yourself a mechanic. hey shit-for-brains, I've got EFI and I trap 120 MPH in the 1/4 with my car along with getting a daily driving 30 MPG. I am saying TBI is a just a carb that costs a lot more and wastes a lot of time and money to tune. What does your POS run? 14s? maybe a 13.9 and you are excited about it? and if you do a little reading on the internet you'll find that tbi makes more low end power than tpi. tpi starts making power at about 1500rpmnow you are net racing. that is really funny because when I had TPI on my IROC (also another POS induction system) I would rip TBIs out of the hole like no other and keep pulling on them like crazy. stop magazine racing, stop throwing around internet factoids and bullshit you read on a website as fact. TBI is garbage. if you want EFI, get a multiport, if not, get a carb, its less of a headache than the illegitimate bastard child of EFI and Carb known as TBI.

first of all you fucking moron, look at a tuned port...intake runner-intake manifold=2 different things. second thing, have you ever seen a tunnel ram? notice that it elevates the the carb or throttle body above the manifold(not to be confused with intake runner)higher elevation=high speed or known as RAM. thirdly, a the idle scews and jets are not the only thing that controlls how much fuel flows through the venture, there's also another thing called ENGINE VACUUM which is what makes a carb a motherfucker to start cold. while your pumping your quadrajunk to get it started i'll have mine started and be on my way retard.

i think v8punk should fight me

Traping 120mph and getting 30mpg. Good on ya. I don't give a flying shit what your trap speed is, don't care and it doesn't matter. What's you ET? Is it less than 10.9? My 305(335 stroker) Ran High 10s low 11s consistantly at 110-115mph. So wow, I'm running with modded LS1s with a 305 block 1.94/1.5 valves and a POS induction system.Now that we have that straight. Lets see, what wins races, torque does. I have close to 400 ft/lbs of torque from 1500 to 6000 rpm, what do you have? Now I don't come on here to have a pissing contest with anyone. If you want to post USEFULL advice then so be it, if not get lost because you WON'T last long.

Pretty low speeds for 10's and 11's... those are 12 second speeds...

V8punk knows TBI hell I bought his old TBI car from him. His car was TPI and now is improved nicely over that.

TBI is junk!

Quit arguing and getting your panties all pulled up your ass and go to www.mofba.net and thridgen.org

Oh and carbs usually fire right up to if they are set up right. my lil 88 cordia fires everytime and its a carb.... Hell sometimes it starts up faster than my TBI! WHICH IS JUNK I HAVE IT! IT IS JUNK! I KNOW PEOPLE WHO HAVE RUN BOTH THE 4BBL TBI'S 2BBL Holleys and BB stock TBI UNITS THEY SUCK!

Show us some time slips of that TBI runnning that! And how bout showing me what you have invested! I will bet you both me and V8punk have less invested and will trap higher speeds and do even better slicks!! TBI is junk. its inefficent. And the low end tq it has over TPI is prolly due mostly inpart to its horrible truck cam that makes no power over 4500 rpms.

Also I would never run a quadrajunk. Standard style for me. Demon preferred but holley's will do.

Low speed, low time, I get down the track to fast to make a lot of speed. If you have a high speed trap and run 12s or 13s it's because of a lack of low and mid rpm torque. I've got about 4 grand invested in my engine and I'm putting out over 400hp and just about as mucch torque. Do you really want a parts list?

Nope want time slips and pics.

And I have only about 900 in my engine and only reason I am looking at 12 flat at 115-120 is because of the low traction I have.

Maybe your low speed is due to the fact your not making any top end power... sounds like TBI choke....

Seems to me that wether or not I have any top end power is not important seeing how I still beat you by a second or better.

i'm not trying to say that TBI is the best ever made. i like TPI, i even like carbs to an extent, but the carb is far from something to be raved about, hence the fact that motor companys dont use the damn thing anymore. and you say ur carb fires right up if it's set set up right, key word there being "set up right" which differs in climate conditons-winter-summer. i had (have) to re-adjust the thermal choke for winter and richen the mixture a 1/4 of a turn to even run right, and then i'm still stuck waiting for 15 minutes if i plan on driving with the full use of a throttle. I think tbi deserves it's respect considering it lasted clear to the end of the 3rd gen camaro, and i'm pretty sure that GM has a better grasp on engineering than you do, or it would have died out as fast as there first attempt at an injection system which was the computer/carb mix and the stupid idea of putting a mixture solenoid in a carburator. if you wanna trash something, trash that peice of shit.

TBI is junk GM used it because it was cheap to produce. It sucks I own it. As far as a thermal choke get an electronic choke or manaul choke and run a standard carb.

92 RS only reason your beating me by a second or better is due to the nature of my suspension its set up for auto cross not drag racing. I am sure if I concentrated all of my efforts into weight transfer I would be faster. But for now I will just laugh when I go to take a corner and your drag strip queen slides off the road. Would be very amusing I would imagine.

Now if you people want to pull your heads out of your ass and look around and look at the sites provided which are some of the best people in these fields then you will see TBI is junk and so are 305's just because a few idiots got a 305 into the high 10's doesnt mean shit. The 305 is not a performance motor. It will always be limited to the 1.94/1.50 valves! Which means it will always be limited to how much air can get in and out of your cylinders. In the mean time I will be enjoying my 2.05/1.64 valves and enjoy my nice low end torque and my pretty decent top end power (shift point 6500 hp around 427-430hp)

always an excuse. Pull YOUR head out of your ass and see the light. You are a feeble minded idiot and can't stand to be wrong. Grow up dude. We don't need you here.

always an excuse. Pull YOUR head out of your ass and see the light. You are a feeble minded idiot and can't stand to be wrong. Grow up dude. We don't need you here.

I am the idiot your the one who is refusing to look into the links provided. I am not the small one who can not admit to being wrong. I am the one providing the info to you being wrong. you dont want me here because I upset the balance and I am showing all your lil lemming followers that your not as right as you would like to think you are.
Sorry man but your a walking douche bag.....
I showed you the light now if you would pull your head out of your 305 tbi crude caked engine bay maybe you would see this....

If I am so wrong, why do I have a better ET than you? If I am wrong how did I bring a 305 into the 10's? If I am so wrong why does Holley still make the 670 TBI? Hell they even make a 4bbl TBI Like 1050cfm even. If I am so wrong, why are you the one getting your panties in a bunch.

they make it as an upgrade to the TPI. I have dealed with these they are still not an improvement over carb! I have seen people rip them off throw on a 650cfm 4bbl carb and drop 2/10th's. you have a better et than me asshat because of suspension a road race autocross setup is not an ideal setup for drag racing. my car has no weight transfer she simply remains flat. I explained this to you already you anally bleeding asshat!!

How can you see anything down there chewing on your own heals?

how can you build motors with tampons shoved up your bleeding ass and up that crab infested couche you call your pussy???

oh wait you dont your another internet asshat who think he can put a picture of a 9 second camaro in his sig and have people follow him like the lemmings they are...

Ok, this is enough. As far as I'm concerned and I'm sure everyone will follow me, this thread is closed. There are people that need advice and we are doing them no good going back and forth here. Don't post anymore because your waisting every ones time. Good day gentlemen

you just like to have the last word.
oops so do I lol :iceslolan

yeah uh, i didnt mean to gget anyone fired up....but as far as goin all out on my 92rs, i got bout 117000 miles on that engine, so i think im gonna hold off on gettin most of what u guys told me to, cept for the headers, a bigger tbi (prolly holley), and prolly new heads....eventually i plan to put in a 383 stroker and then get real sick with that....the camaro i have now, i love hookin it up but its also my everyday car so getting into it real good would be hard since i need it on a day-to-day basis....with what i have now and gettin that other stuff i mentioned earlier, i think it should be round maybe a 13s car, which i think is good enough for me now with a 305 in it....as far as the exhaust, im gonna keep it at a low end class and keep the car as a kind of sleeper, then light it up when ppl dont really expect that :-) but thanks a lot for helpin me out, take it easy fellas....

Sorry man but I have never seen an LO3 with stock heads pull 13's. We got a guy in our club who has a tpi motor that the company that built it put TBI heads on it he only pulled one car on me with a cam headers tpi slp runners ram air dfi setup hi flo cat and cat back.... its all in the heads on these cars. He went from 15 flat to 13.8 with a set of 64cc torquer S/R's

man, i hate guys that are afraid of technology. sorry man, the 60's are dead and gone. carbs arent the king of the hill anymore, topfuel is going fuel injected, for computer controls, and data management, to extract more power from the engines, its guys like you that are the reason imports have made as much progress as they have, you sit there, tuning your carbs, badmouthing computers and imports, and then that little civic with a stand alone data management system and VTEC is gonna hand you your ass. while i agree that TBI was a band aid fix between carbs and true fuel injection, that dosnt mean its hopeless, with the propor intake manifold TBI can certainly be a top end screamer, i personally preferr TPI, me and 92RS have had plenty of arguments about the subject, but you guys do have major attitudes, your throwing a pissy fit because we dont agree with you, get over it. as far as your websites, how odd, what a thought that if we go to your forums, where you know the guys, that they would back you up. never woulda thunk it. but look man, i know what im talking about, im a chevy tech, a camaro fanatic, own two of em, one TBI and one TPI, have been involved in engine design for years, and am an engineering major, and not to toot my own horn, im also pretty damn smart. now im not trying to get into a pissing contest, and i dont even want to start an argument with you, but all im saying, is that there are guys on here, that are respected for a reason, because they have shown they know what they are talking about, if you have a problem with people disagreeing with you, you shouldnt be a car guy, and you could always just, oh i dunno, go away.

Why is it always me they try to pick on?? But I always win so it's all good.

oh and i do agree the 2.02/1.60 valves will not fit a 305, i was talking about my heads, but i can see where that might have caused confusion. besides the 305 is a low end power engine, so you want small ports for high port velocities anyway.

cuz your an easy mark dude, lol, no one messes with me cuz im too intimidating ;) lmao!! that or i just sound like a tard and they feel bad picking on me ;)

I agree with the latter of the two...did I say that out loud?? LOL

actually at no time was I even annoyed...

Afraid of technology? Not at all. I got an EFI mustang. I am just saying bang for the buck is carb all the way! I am basically going to be running 12 flats for 3400 bux including the price of my car. And thats 0% ghetto rigging. I am doing it all the right way. My sites? Not really I dont care for much of the guys on thirdgen.org they all stick to proven things and are scared to try new things. And I have worked for GM dealerships and work as a mechanic too right now. So its not like I am a novice here either. I just dont agree with TBI having played with it some. Carb is cheaper to go faster than TBI thats my side of it. And from experiance a well tuned carb starts just as easy as a well tuned TBI. However neither are as efficient as true EFI or a TPI setup. But TPI in showroom stock condition on a 350 does top out at 5200rpms. though this is easily solved with an HSR.

lol, so you like to try new things, but you rag on 92RS for doing something no one ever does hahaha, you do see the irony in that dont ya ;) and yeah TPI is kinda a downer with the limited rpm range, but my plan is to throw a accel superram intake on it, with the larger plenium and shorter runners, it extends the rpm range to 6500rpms. what is an HSR by the way? and dunno bout them carbs, dont have alot of experience with em, but that experience i did have, was not good ones, with the TBI ive never had a problem, and she runs like a bat outta hell, especially when you concider that shes only got 170hp. and 2.73 gears with an open rear :)

the stock TBI is as good as any mild manered carb, way better than the stock choker bore. But the holley 670 teamed up with an edelbrock performer is comparable in performance to a 700 double pumper, put it on a performer rpm and your putting gas and air into the heads just as good as an LT1. I believe in this system, I've seen it perform and I've had my head planted in the back of my seat enough times to know that I can rely on it.

People trying to get the most out of tbi is nothing new. Not ragging on 92RS as I am ragging on TBI. Just had less headaches with a carb. But my buddies can tune a carb in no time flat so to me its not such a problem. But yeah I like to do stuff not so conventional. And the carb I have is a 750cfm double pumper with a performer RPM manifold. Got pics of it too.

Oh forgot
HSR= Holley Stealth Ram. Its a TPI manifold. Works very nicely. Not as big as the Super Ram much smaller. But outflows the TPI and I think the super ram. I will have to look into it. As I dont own TPI I am not sure of the flow ratings of the different intakes.

lol, no arguments here that there are more headaches with computer controled systems, part of the charm of em is the little details that are involved, but i just look at an old 53 corvette, next to a current C5 Z06, and think, man, technology is worth the trouble. :) cuz the new vettes are nothing but computers on wheels. lol. i agree that trying to get performance out of the TBI is nothing new, but what got my attention is that 92RS actually pulled it off, hes actually pretty up to date on what it takes to get one of those things running. in all fairnes its really not the stock engine at all anymore, save for the block perhaps, but it still started as one, so eh, i give him props for it.

oh, ok, yeah ive heard of the holly stealth ram intake, the dyno results ive seen put it behind the super ram, the super ram is a 53hp boost over a stock TPI, granded its also a 1000cfm throttle body, and larger baseplate, the holly ive only seen 25hp improovement, not to mention that the superram was designed by john lingenfelter, so i trust it completely. i think the holly is also a 1000cfm thottle body, but the design of the intake is more conventional like a tunnel ram setup for a carb. the lingenfelter still uses the long runners and cross ram setup of the TPI but flows more air, and has shorter runners for higher rpm potential so it balances the low end responce and high end power. i looked at the holly intake, but the 302 im building is supposed to be a modern interpertation of the DZ 302 which had the cross ram dual quad setup, so i like that the TPI setup follows a similar design, where the runners from one side feed the other side of the engine. also looking into a custom 30/30 camshaft based on the same specs as the original DZ 302 cam, but with a few modern mods to it for more area under the curve and faster valve opening and closing. might not be worth it in the end as far as a dragstrip hero, but i will be my vision of a perfect blend of old and new, which is what im realy after. if i run 12's ill be happy. oh and heres everyone opportunity to tell me im crazy and dont know what im talking about ;) i plan to get 450-500hp out of the 302 (really 327 4.030 bore and 3.211 stroke) sent through a built 700-R4, into a torsen rear end, get 30+mpg on the highway, and do it all on pump gas. and have her be a beautiful example of a chick magnet. polished, primped, and sexy. :)

there is always going to be an arguement between tbi tpi and carb, some people prefer one and some people prefer the other

what sage advice ;)

I believe the HSR is cheaper than the Super ram... though that nice big grill is nice! lol

ya know what would be cool. Get a professional products intake, the one that's based off the super victor jr. tap the nitro bosses and plug them with injectors and take the TB off the TBI and sit it on top. Yeah baby.

creative

Creative is bored stroked Northstar motor in a 3rd gen lol

umm...NO!!!

well ok it would need 2 turbo's but its a gm v8 its smooth running and that would haul... but somehow just wouldnt be as fun as a lopey SBC....

i have a 90 rallysport with tbi and its fast
no complaints here. there are a lot of
mods from jegs to trick out a tb. my rs
will go from 0-60 in 5 sec flat. quarter mile
times in the low 13's (did i mention its only a 305,
5 speed)

naw, northstar in a fierro, ive seen it, scary motherfucker :)