questions about carbed 350 in 92 z28
questions about carbed 350 in 92 z28
i originally had an 89 iroc z28 but i sold it about a year ago and it was honestly my livelyhood, however technical mayhem, an automatic trans and a twist of fate brouth an end to that. im at this site because the last site i was in is gone and a friend of mine is in here and swears upon the knowledge of some of the senior members. now a year later i am considering buying another z28. only thing is i want a 350 and 5spd without exception. problem is im only buying another z if i can pick up a 91 or 92 z28 305 5sp manual. at which time i want to build a 350 (probably a 383 or 391) and run it with the t5. my point of concern is the electrical element of what happens with the wiring harness, gauges, sensors.1 if i decide to take the carburated route, or 2 if i keep the fuel injection. also i would like to now what to expect during this swap what is necessary in doing so and any idea on which is more cost efficient and most likely to produce power for the money. if im not confident in swapping engines without problems a may buy a early 90s cobra (which ill easily find in a manual.) please just keep that in mind without holding it against me
Last edited by karbonklone; Jan 25, 2003 at 02:30 PM.
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Welcome aboard. There are plenty of knowledgeable people who hang around, but you may have put them off with your Colbra comment. So, you're stuck with me... 
Really, though, the factory never made a 350 with 5-speed. Why they didn't has been much debated, but the two reasons I tend to believe are 1) the 5-speed is too weak for the 350 torque for them to risk a bunch of warranty claims, and 2) difficulty getting emissions certification with 350/5-speed. So, if you want such a combo, you're going to have to make it yourself.
The stronger 5-speed is what they call the "World Class" T5 transmission. Do a search on the Tranny forum for more info about them. Many people use that tranny behind stout 305's and 350's, even race them, but you don't get away with excessive abuse.
Other options include a Tremec tranny or T56. They will take the torque of a 350 or 383, but will raise the cost and complexity of the swap considerably.

Really, though, the factory never made a 350 with 5-speed. Why they didn't has been much debated, but the two reasons I tend to believe are 1) the 5-speed is too weak for the 350 torque for them to risk a bunch of warranty claims, and 2) difficulty getting emissions certification with 350/5-speed. So, if you want such a combo, you're going to have to make it yourself.
The stronger 5-speed is what they call the "World Class" T5 transmission. Do a search on the Tranny forum for more info about them. Many people use that tranny behind stout 305's and 350's, even race them, but you don't get away with excessive abuse.
Other options include a Tremec tranny or T56. They will take the torque of a 350 or 383, but will raise the cost and complexity of the swap considerably.
thanks since i have already had a camaro i do now a respectable amount about them in which id like to mention it has also been said that the corvette had a lot to do with the 350 5spd combo never being introduced. simply put gm maintains the corvette hierarchy at all costs (exactly what killed the gnx is in 89 i believe,it turned a quicker et than the vette.) so i do know id have to switch either a motor or trans to do so. i chose a motor swap because i think itll be easier considering if i did the trans id pull the motor to beef it up anyway.im just concerermed about working around the wiring harness. as far as scaring people off with the cobra comment if f bodys are better in their mind it shouldnt hinder the likelyness to respond. ive had an iroc z and a 92 5.0 and to tell you the truth the 5.0 was easier to upgrade and maintain as well as faster in the 0-60 the 5.0 had bolton mods and the z had a 368 cubic inch crate motor that bench dynoed in the neighborhood of 350.if i had to guess the mustang probably made about 300. im actually waiting on pics from a guy a met online at a 93 cobra. i just wanted another camaro because i think the appearance better suits a muscle car. as much as id like to have a 92 z i think i may go the other route. camaros are beautiful cars but are a mechanical blunder with an overpriced aftermarket and anyone who disagrees is a fool or a liar. anyways thanks for the reply but i must admit it may have been too little too late.
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Making the Camaro faster than Vettes is another theory put forth. In fact, the turbo Regal GN's were faster in '86 than the Vettes, although the Vettes caught up not long after.
I hope you realize the Cobra comment was tongue-in-cheek. But, I have a co-worker who has spent more money on wheels and tires on his '96, and that's the least of what he's spent, than I've got in my Camaro, and I'm about a tenth slower in the 1/4 than he is. With equal rear ratio, I'd be quicker than he is.
Some of my best friends drive Fords & Mopars. But, perhaps that just means I need to get out more...
Good luck with whatever you get. If it happens to be a 3rd gen F-body, feel free to come on by.
I hope you realize the Cobra comment was tongue-in-cheek. But, I have a co-worker who has spent more money on wheels and tires on his '96, and that's the least of what he's spent, than I've got in my Camaro, and I'm about a tenth slower in the 1/4 than he is. With equal rear ratio, I'd be quicker than he is.
Some of my best friends drive Fords & Mopars. But, perhaps that just means I need to get out more...
Good luck with whatever you get. If it happens to be a 3rd gen F-body, feel free to come on by.
much obliged, the cobra comment (dare i say cobra so many times on this board) which i feel i must defend is the price difference between the two cars. i have to admit i like camaros and trans ams alike but i hold no alleigance with a manufacturer, meaning i dont drive fords or chevys, rather anything i can make fast. i wanted a 92 z28 because in the end my iroc looked almost identical to one but to get the car to where i want it there is a lot of bs id have to chase down. the problem with late thirdgens i think is everything depends on everything. what i mean is to do the car right you have to do it all at once engine, trans, comp, drivetrain. with my iroc it seemed the more power it cranked out the more often stupid things broke. it nickel and dimed me to death. in the end i had blown trans and thought the motor had major mech malfunction. the guy that bought it said after rebuilding the trans he found it was an electrical problem with the injectors and paid over 3500 dollars in the process of fixing it and eventually giving up and putting a carb on it. my mustang was much simpler in design and i think if you spend a lot of money beefing a car up simpler is better. i still may get a z28 im still considering the options and how much i expect to pay because im swithching the motor as soon as i get it. and whichever seems more reasonable ill go with. the cobra is appealing because parts dont cost as much and to do the engine,body,trans,wheels, exhaust, and suspension on a fox chassis mustang will cost in the area of 12grand, which i think i can do in about a year ( im 20 and make about 20k a year and live at home.) but to do everything on a z i think would be considerably more. that and i dont know if you can help but to put a carbed motor in a late 3rd gen what do i have to do with the wiring harness? i heard if you unplug it the only thing that will work is the speedo?
your right dude fords are really crappy, which would explain why theyve outsold the ta and camaro COMBINED the last couple years and is also why they stopped making mustangs in 2002, oh my bad that was the f body. typical close minded, moron response i was hoping to avoid. fyi ive decided against a camaro or firebird to avoid being stereotyped with wife beating,****** sporting, trailer people as yourself.if theyd have built them right in the first place i wouldnt have had to ponder swapping a motor or trans. nothing against chevys im still considering an early 90s vette. but cmon dude get a life.
ps even if you dont beat your wife, live in a trailer or have a ******, your still an idiot
ps even if you dont beat your wife, live in a trailer or have a ******, your still an idiot
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oh yeah to any one else who owns a f body and not a trailer, ******, or beaten wife. and is also of a higher level of inteligence a thousand apologies
oh yeah to any one else who owns a f body and not a trailer, ******, or beaten wife. and is also of a higher level of inteligence a thousand apologies
Defensive... Defiant... Belligerent...
I assume you know what those words mean since you are so smart (not that some ****** sporting trailer trash like me would).
It seems I hit a soft spot that you are very uncomfortable about. If it gets you off so much to start calling names to people who drive f-bodys then by all means enjoy every bit of it.
Oh and you accuse me of having no life. My post was a lot shorter than your cobra this and cobra that. So who's the one with no life? The one that has nothing else better to do than go around calling someone who drives an f-body "wife beating, ****** sporting, trailer people". That was clearly a "typical close minded, moron minded statement".
The car that a person drives is his or her own preference. If its because they like the way it looks, or even if they think its fast. You judge me for the kind of car I drive? I have not even told you what kind of car I own, or any for that matter. You good sir are the "typical close minded, moron minded" fool.
Since you are completely sold on the cobra, why don't you try comparing it to a car of its own class instead of some old 80s camaro. I'm sure a z06 vette would give you something to swear about. Try running a stock z06 against any stock cobra you can throw at it.
Also, yes, I do own a thirdgen as well. I am truly sorry for your old '89 IROC, it deserved a better owner than you. No wonder it gave you so much trouble.
The next time you try to say something please at least try to type it neatly. I hate people who start a sentence with the word AND. Even us so called "wife beating, ****** sporting, trailer people" can take English and typing classes at public school. Community college is another solution.
I assume you know what those words mean since you are so smart (not that some ****** sporting trailer trash like me would).
It seems I hit a soft spot that you are very uncomfortable about. If it gets you off so much to start calling names to people who drive f-bodys then by all means enjoy every bit of it.
Oh and you accuse me of having no life. My post was a lot shorter than your cobra this and cobra that. So who's the one with no life? The one that has nothing else better to do than go around calling someone who drives an f-body "wife beating, ****** sporting, trailer people". That was clearly a "typical close minded, moron minded statement".
The car that a person drives is his or her own preference. If its because they like the way it looks, or even if they think its fast. You judge me for the kind of car I drive? I have not even told you what kind of car I own, or any for that matter. You good sir are the "typical close minded, moron minded" fool.
Since you are completely sold on the cobra, why don't you try comparing it to a car of its own class instead of some old 80s camaro. I'm sure a z06 vette would give you something to swear about. Try running a stock z06 against any stock cobra you can throw at it.
Also, yes, I do own a thirdgen as well. I am truly sorry for your old '89 IROC, it deserved a better owner than you. No wonder it gave you so much trouble.
The next time you try to say something please at least try to type it neatly. I hate people who start a sentence with the word AND. Even us so called "wife beating, ****** sporting, trailer people" can take English and typing classes at public school. Community college is another solution.
Last edited by Ancel Zero; Feb 16, 2003 at 12:56 AM.
if it is a battle of wit you wage i implore that you give up now that youve lowered the bar once more with your pompous input if i may id like to retort. obviously you have hit a soft spot, that which is of course persons such as your self who take a topic out of context and decide to intervene with your mindles rhetoric. as far as having no life who is worse friend, the man typing way to much text or the fool wasting his time reading it. fyi since education is of such consequential value to you, im only 20 and im a college student pursuing a 6 year major. so please excuse my conversational text, ill do my best to avoid this in any other post i presume an english teacher will be reading.
AND (just for you) since your analyzing my every post with a fine tooth comb check where i said "and if you dont, etc...." i clearly allude that im of the belief your attitude is what pushed you to the likeness of a moron. while your up there figure out what percentage of my posts fit your "cobra this and cobra that" inclination. if i where an uneducated man that resorted to generalization, stereotyping, assumption, and guessing (which i imagine wouldnt be too much of a stretch for yourself) id say about 15%, even then im only putting it out as a point to ponder in the related discussion. if you could also take a look at one my later posts where i said i was considering a corvette, lets call this the "corvette this and corvette that" for your easy reference. infact lets call this whole board "camaro this and firebird that" so we can vindicate your daft characterization of posts. feed your brain on this young esquire, if my post sounds vague imagine how yours look to me "ford really? found on road dead, cmon add to it!" truly the words of an enlightened man.would you like to know why my posts are so verbous? look how much youve learned already, ive mislead you to the concept of reading, maybe even expanding a vocabulary which im certain is plentiful already. soon you could be an anatomic principle to society. since where having this existential moment know that i do not need to know what kind of a car you drive to know your an idiot. you made it obvious via your entrance to this post.
in fear of sounding redundant ill end with this thought, how much time have you just lost reading this entire post just to fuel your vindictive lust for conflict? time youve deprived yourself, precious minutes youll never get back, wasted. more importantly how much of this post did you really know versus what you assumed. how childish did you look with your first post, of all the places on a tech board. lastly if i said you were the better man right now and that i was sorry would your life still be meaningless?
if possible it would be greatly appreciated that if anyone else decides to post please keep it to the relevant facts discussed initially.
its not that i dont enjoy conversation like this but its becoming a nuiscance.
AND (just for you) since your analyzing my every post with a fine tooth comb check where i said "and if you dont, etc...." i clearly allude that im of the belief your attitude is what pushed you to the likeness of a moron. while your up there figure out what percentage of my posts fit your "cobra this and cobra that" inclination. if i where an uneducated man that resorted to generalization, stereotyping, assumption, and guessing (which i imagine wouldnt be too much of a stretch for yourself) id say about 15%, even then im only putting it out as a point to ponder in the related discussion. if you could also take a look at one my later posts where i said i was considering a corvette, lets call this the "corvette this and corvette that" for your easy reference. infact lets call this whole board "camaro this and firebird that" so we can vindicate your daft characterization of posts. feed your brain on this young esquire, if my post sounds vague imagine how yours look to me "ford really? found on road dead, cmon add to it!" truly the words of an enlightened man.would you like to know why my posts are so verbous? look how much youve learned already, ive mislead you to the concept of reading, maybe even expanding a vocabulary which im certain is plentiful already. soon you could be an anatomic principle to society. since where having this existential moment know that i do not need to know what kind of a car you drive to know your an idiot. you made it obvious via your entrance to this post.
in fear of sounding redundant ill end with this thought, how much time have you just lost reading this entire post just to fuel your vindictive lust for conflict? time youve deprived yourself, precious minutes youll never get back, wasted. more importantly how much of this post did you really know versus what you assumed. how childish did you look with your first post, of all the places on a tech board. lastly if i said you were the better man right now and that i was sorry would your life still be meaningless?
if possible it would be greatly appreciated that if anyone else decides to post please keep it to the relevant facts discussed initially.
its not that i dont enjoy conversation like this but its becoming a nuiscance. Last edited by karbonklone; Feb 19, 2003 at 12:49 PM.
Dude, you just wasted 15 minutes typing out that pointless post, when you could have been hitting on women. You are in college right? Also, we don't care about your plans to buy a Cobra. No one does. I am sure no would care if it was a Ford board either.
Member
Joined: Oct 2001
Posts: 496
Likes: 0
From: Appleton, WI. 54914
Car: 91 Firebird
Engine: L03
Transmission: Auto
C'mon guys, for real? Forget the English classes, I think you both took too much DRAMA.
No need to see who can throw around the biggest words as proof of your intellegence. Do you really think you are making anyone think you are smarter by doing that? But just to add something useful to the post, I would agree that people who are all "Ford sucks, there are no other cars than GM" are pretty moronic. But, I also feel to each their own.
So, please lay this little lover's spat to rest. Everyone else will be happy!
No need to see who can throw around the biggest words as proof of your intellegence. Do you really think you are making anyone think you are smarter by doing that? But just to add something useful to the post, I would agree that people who are all "Ford sucks, there are no other cars than GM" are pretty moronic. But, I also feel to each their own.
So, please lay this little lover's spat to rest. Everyone else will be happy!
cuz i started the thread about swapping a motor in a car, not a cobra all i said for the last time is i was considering it amongst other things. what bothers me is people who are nothing, or know nothing putting their 2 cents where its not needed. for instance your on a post talking about rebuilding a v6 and all the sudden im like "hey v6s are junk" that gets under my skin. yeah to each their own to start all this lame ford crap take it to a message board for kids. i guess i just cant stand close minded people its the same for the anti ford, imports, chevy alike and its retarded.
by the way, less than 10 minutes, have a girlfriend,not throwing anything around i could care less about what strangers think of my intelligence. if i werent intelligent it would be obvious, id be posting stupid posts bothering other people. purely the victim of circumstance
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