help i need to know what kind of heads i can put on my car to gain the hp up
help i need to know what kind of heads i can put on my car to gain the hp up
i have a 92 camaro rs with a 305 and i want some heads to put on it so does anyone have any idea of what i can put on it and can u give me a price of how much they will cost me for a set and a websight if found on internet thanks dustin
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: help i need to know what kind of heads i can put on my car to gain the hp up
How much money do you have to spend? The Australian company EngineQuest has been making a name for itself in the hot rodding world, and I believe that they have a nice 305 head. Or you could look around for a set of actual Chevy 305 Vortec heads with the 58 cc combustion chambers, they are nearly identical to the 64 cc 5.7 Liter Vortecs, but have the smaller combustion chamber to work better with the 305's piston compression height. But they are a little hard to find, As far as I know they only made them for one or two years in 305 Vortec pickup trucks.
Just be aware that the smaller 305 bore size, even smaller than a 283 bore (the cubic inch difference is made up with the 350- like 3.48" stroke), works against you hard on a 305, causing shrouding issues and limiting you in valve size. It's always better to go with a 350 if possible. But it's hard to not go with what you aleady have in the car unless you are going all out performance- wise. But, If you were putting the same money and effort into a 350, you'd be much better off.
I've got a 305 in my daily driver '83 and I'm thinking about swapping a 350 or maybe even a 400 into it. I've got a couple of stock runners to play with to build a mildly hopped up motor. But I scored a pair of 305 Vortecs for a pretty good price a while back in case I just want to play with my "tiddler" 305.
Just be aware that the smaller 305 bore size, even smaller than a 283 bore (the cubic inch difference is made up with the 350- like 3.48" stroke), works against you hard on a 305, causing shrouding issues and limiting you in valve size. It's always better to go with a 350 if possible. But it's hard to not go with what you aleady have in the car unless you are going all out performance- wise. But, If you were putting the same money and effort into a 350, you'd be much better off.
I've got a 305 in my daily driver '83 and I'm thinking about swapping a 350 or maybe even a 400 into it. I've got a couple of stock runners to play with to build a mildly hopped up motor. But I scored a pair of 305 Vortecs for a pretty good price a while back in case I just want to play with my "tiddler" 305.
Re: help i need to know what kind of heads i can put on my car to gain the hp up
How much money do you have to spend? The Australian company EngineQuest has been making a name for itself in the hot rodding world, and I believe that they have a nice 305 head. Or you could look around for a set of actual Chevy 305 Vortec heads with the 58 cc combustion chambers, they are nearly identical to the 64 cc 5.7 Liter Vortecs, but have the smaller combustion chamber to work better with the 305's piston compression height. But they are a little hard to find, As far as I know they only made them for one or two years in 305 Vortec pickup trucks.
Just be aware that the smaller 305 bore size, even smaller than a 283 bore (the cubic inch difference is made up with the 350- like 3.48" stroke), works against you hard on a 305, causing shrouding issues and limiting you in valve size. It's always better to go with a 350 if possible. But it's hard to not go with what you aleady have in the car unless you are going all out performance- wise. But, If you were putting the same money and effort into a 350, you'd be much better off.
I've got a 305 in my daily driver '83 and I'm thinking about swapping a 350 or maybe even a 400 into it. I've got a couple of stock runners to play with to build a mildly hopped up motor. But I scored a pair of 305 Vortecs for a pretty good price a while back in case I just want to play with my "tiddler" 305.
Just be aware that the smaller 305 bore size, even smaller than a 283 bore (the cubic inch difference is made up with the 350- like 3.48" stroke), works against you hard on a 305, causing shrouding issues and limiting you in valve size. It's always better to go with a 350 if possible. But it's hard to not go with what you aleady have in the car unless you are going all out performance- wise. But, If you were putting the same money and effort into a 350, you'd be much better off.
I've got a 305 in my daily driver '83 and I'm thinking about swapping a 350 or maybe even a 400 into it. I've got a couple of stock runners to play with to build a mildly hopped up motor. But I scored a pair of 305 Vortecs for a pretty good price a while back in case I just want to play with my "tiddler" 305.
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: help i need to know what kind of heads i can put on my car to gain the hp up
Just throwing heads on will do little. A engine is a package that has to be matched up so to get the best from new heads need intake / exh mods.
Cheapest fix for extra HP is a good exhaust with headers
These cars are not like ricers; you don't just "chip it" and make a zillion more Hp

Plenty of programming options out there BUT you have to know what you are doing
Re: help i need to know what kind of heads i can put on my car to gain the hp up
well its hard to get beter flow because my air filter is on my carberator and i dot know how to do that to put one on and you have to keep cold air in the re and not hot so it hard to get it to have netter air flow but i put a new flowmaster muffler on it and seems to help its a flowmaster 80 series but the heads will help me get more hp and so will a chip so what can i do for that for right now cuz i dont have a hole bunch of mony thats just the two main things i want to do now
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Trending Topics
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: help i need to know what kind of heads i can put on my car to gain the hp up
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http://www.sportsimportsltd.com/hyptherperch.html
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http://www.summitracing.com/parts/JET-63100/
http://www.streetandperformanceelect.../hptpchevc.htm
Last edited by vetteoz; Oct 11, 2009 at 10:51 PM.
Senior Member
Joined: Nov 2003
Posts: 586
Likes: 1
From: Gary, In USA
Car: '85 Camaro
Engine: LG4 305
Transmission: T-5
Re: help i need to know what kind of heads i can put on my car to gain the hp up
1. Make sure the car is tuned properly as it is. New belts, hoses, fluids, spark plugs, etc. ...
2. Do a performance exhaust from the cat back. Save the headers for when you pull the engine.
3. If you still want more power here are some questions:
a. Does the car need to stay street legal?
b. How much gas per 300 miles at highway speeds is too much?
c. How good are your mechanical skills?
d. Do you have a mechanic that likes performance work?
e. How much do you have on hand to spend? Figure half for your mechanic...
f. Are you going to race? Do you have to follow class rules to race?
g. Is there a car that you are trying to beat?
h. What kind of transmission do you have, and how much power can it hold?
i. What kind of rear end do you have, and how much power can it hold?
j. How good are your brakes? Your suspension?
k. How will you know when you are satisfied?
l. How long are you willing to wait for your car to be complete?
These sorts of questions will get the ball rolling. If you don't answer these questions you will easily end up with a lot of parts, no money, bored and frustrated cause your car isn't fun, and wondering why you started to do this in the first place.
A car you can drive right now is always more fun than a car waiting on parts...
2. Do a performance exhaust from the cat back. Save the headers for when you pull the engine.
3. If you still want more power here are some questions:
a. Does the car need to stay street legal?
b. How much gas per 300 miles at highway speeds is too much?
c. How good are your mechanical skills?
d. Do you have a mechanic that likes performance work?
e. How much do you have on hand to spend? Figure half for your mechanic...
f. Are you going to race? Do you have to follow class rules to race?
g. Is there a car that you are trying to beat?
h. What kind of transmission do you have, and how much power can it hold?
i. What kind of rear end do you have, and how much power can it hold?
j. How good are your brakes? Your suspension?
k. How will you know when you are satisfied?
l. How long are you willing to wait for your car to be complete?
These sorts of questions will get the ball rolling. If you don't answer these questions you will easily end up with a lot of parts, no money, bored and frustrated cause your car isn't fun, and wondering why you started to do this in the first place.
A car you can drive right now is always more fun than a car waiting on parts...
Re: help i need to know what kind of heads i can put on my car to gain the hp up
so what r u saying i sould not spend my time on it cause it wont do nothing or what and i mite as well for get the heads and chip or what r u trying to say
Re: help i need to know what kind of heads i can put on my car to gain the hp up
and what exactly does this JET Performance 63100 - JET TPI Airfoils d ois it for u fuel injection system so i need 8 of them or what?
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: help i need to know what kind of heads i can put on my car to gain the hp up
You say you have a 92 with 305 so I assume it is a TPI EFI?
You don't state otherwise .
Little more info up front would stop us guessing.
Last edited by vetteoz; Oct 12, 2009 at 12:27 AM.
Senior Member
Joined: Nov 2003
Posts: 586
Likes: 1
From: Gary, In USA
Car: '85 Camaro
Engine: LG4 305
Transmission: T-5
Re: help i need to know what kind of heads i can put on my car to gain the hp up
I am saying that before you spend your money you need to get some more info. The answers to your questions can only be as clear as your questions.
If you want to get some heads for your car there are some out there. How would you feel if you bought and installed heads, but felt no power difference, and there was no measurable difference on the dyno, or the heads you bought make power but not the way you drive?
Heads for drag racing are going to be different from heads for highway driving are going to be different from top speed driving are going to be different from heads for road course racing.
It is your money, your car, your time. Use them wisely and you will have fun.
If you want to get some heads for your car there are some out there. How would you feel if you bought and installed heads, but felt no power difference, and there was no measurable difference on the dyno, or the heads you bought make power but not the way you drive?
Heads for drag racing are going to be different from heads for highway driving are going to be different from top speed driving are going to be different from heads for road course racing.
It is your money, your car, your time. Use them wisely and you will have fun.
Senior Member
Joined: Nov 2003
Posts: 586
Likes: 1
From: Gary, In USA
Car: '85 Camaro
Engine: LG4 305
Transmission: T-5
Re: help i need to know what kind of heads i can put on my car to gain the hp up
Before you spend hundreds or thousands of dollars on your car spend $20 on this book. It will help you. There are others like it. The more of them you read the better your decision making process.
http://www.amazon.com/Performance-Ha...5388976&sr=1-6
http://www.amazon.com/Performance-Ha...5388976&sr=1-6
Re: help i need to know what kind of heads i can put on my car to gain the hp up
I am saying that before you spend your money you need to get some more info. The answers to your questions can only be as clear as your questions.
If you want to get some heads for your car there are some out there. How would you feel if you bought and installed heads, but felt no power difference, and there was no measurable difference on the dyno, or the heads you bought make power but not the way you drive?
Heads for drag racing are going to be different from heads for highway driving are going to be different from top speed driving are going to be different from heads for road course racing.
It is your money, your car, your time. Use them wisely and you will have fun.
If you want to get some heads for your car there are some out there. How would you feel if you bought and installed heads, but felt no power difference, and there was no measurable difference on the dyno, or the heads you bought make power but not the way you drive?
Heads for drag racing are going to be different from heads for highway driving are going to be different from top speed driving are going to be different from heads for road course racing.
It is your money, your car, your time. Use them wisely and you will have fun.
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Member

Joined: Sep 2009
Posts: 137
Likes: 1
From: EL Paso, Tx
Car: '89 Iroc-Z
Engine: 5.7 TPI
Transmission: 700 R4
Axle/Gears: 2.77
Re: help i need to know what kind of heads i can put on my car to gain the hp up
Hey guys,
I have some questions about heads as well. Mind if I join in with my situation?
I have some questions about heads as well. Mind if I join in with my situation?
Member



Joined: May 2006
Posts: 319
Likes: 2
From: Grand Junction, Co
Car: '83 WS6 T/A 65,000 miles
Engine: 5.0L vin H stock, 406SBC right now
Transmission: T-5
Axle/Gears: Corp. 3.73
Re: help i need to know what kind of heads i can put on my car to gain the hp up
An engine is an air pump. It can pump fast, medium or slow. You need to know how you expect it to perform for you and install parts that match not only the intended use but also eachother. SR Torquer heads might help a little, but money would be better spent on exhaust.
A package would include a cam, pistons (with proper height to give corect compression with heads and cam) heads or head work, intake and exhaust mods/parts and fresh air ducting. Also don't forget tranny work such as shift kit or rebuild, a stall converter and gears. Lastly you'll need tires that hook up and a chassis/suspension that transfers weight properly.
One can not simply recommend a pair of heads for some engine in some car and expect any performance gain worth the 1000 bucks or so you'll spend.
So how do you want it to run?
How much can you spend?
How stock or at least legal does it need to be?
....as a reference I put a 268 Comp flat tappet hydraulic cam, a Z/28 intake with a modified pleneum, exhaust and big fresh air slurping filter in my 305. The T-5 and 3.73s were factory, as were the tires. The car would spin it's brains out and still drag 14.7s @ 96+ mph every trip down the quarter mile. It was a good midrange package with power from 1500 to around 5000-5200. It also got resonable gas mileage. A good head job and more compression would have helped a lot, resulting in more power and slightly higher rev range.
So you see a single part, or illcombined group of parts will make a change in one area or another, but a package will make a performance increase and you will be much happier.
A package would include a cam, pistons (with proper height to give corect compression with heads and cam) heads or head work, intake and exhaust mods/parts and fresh air ducting. Also don't forget tranny work such as shift kit or rebuild, a stall converter and gears. Lastly you'll need tires that hook up and a chassis/suspension that transfers weight properly.
One can not simply recommend a pair of heads for some engine in some car and expect any performance gain worth the 1000 bucks or so you'll spend.
So how do you want it to run?
How much can you spend?
How stock or at least legal does it need to be?
....as a reference I put a 268 Comp flat tappet hydraulic cam, a Z/28 intake with a modified pleneum, exhaust and big fresh air slurping filter in my 305. The T-5 and 3.73s were factory, as were the tires. The car would spin it's brains out and still drag 14.7s @ 96+ mph every trip down the quarter mile. It was a good midrange package with power from 1500 to around 5000-5200. It also got resonable gas mileage. A good head job and more compression would have helped a lot, resulting in more power and slightly higher rev range.
So you see a single part, or illcombined group of parts will make a change in one area or another, but a package will make a performance increase and you will be much happier.
Re: help i need to know what kind of heads i can put on my car to gain the hp up
ok guys im not going to put nos in my car or nothing like that im not going to drag it i just need sumthing to get my rpms higher see if i floor it i goes untill 3rd gear and then the rpms wont gain and stay high they go low and the car dont gain speed still i wont to stop that so just tell me what i need to help me with that problem thats what i want to get ride of and can u also tell me how to do it if you know how. thanks
Re: help i need to know what kind of heads i can put on my car to gain the hp up
amd i dont what no long story just tell me what i have to do and what i need beside exhaust i just put a muffler of and when my exhaust goes bad im putting headers on and i have them all ready so just tell me what i need that will help me the most 1 beeing the best thing i should get on down to 10 or what ever beeing what i need but not the most
thanks
thanks
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: help i need to know what kind of heads i can put on my car to gain the hp up
Re: help i need to know what kind of heads i can put on my car to gain the hp up
yes i understand that but i mean i jus wont some ideas of what i can put on my car for air and stuff like that thats not totaly to much $$ i just want something to put in it t ohelp get it higher rpms and get from 0 to 70 quicker and not 0 to 40 really fast and then 40 to 70 really slow i just hate that so what can i do with that i know im going to put a hypertech chip in it so it will help a little so what else can i do
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Member



Joined: May 2006
Posts: 319
Likes: 2
From: Grand Junction, Co
Car: '83 WS6 T/A 65,000 miles
Engine: 5.0L vin H stock, 406SBC right now
Transmission: T-5
Axle/Gears: Corp. 3.73
Re: help i need to know what kind of heads i can put on my car to gain the hp up
So are you saying the trans is shifting too soon? It's going into third too soon? Maybe you need a simple trans fix, like a TV cable adjustment or modulator vacuum hose connected.
Re: help i need to know what kind of heads i can put on my car to gain the hp up
Thats what it sounds like to me too. You say the RPM's drop and stay low. Thats because your in overdrive, and probably have like 2.73 gears in the rear. You have a muffler. Get you some headers, a K&N filter atleast,if not a complete cold air kit. Putting in some gears would help alot too. A shift kit for your trans would be a good idea too. What they are saying though, is you put all those things on your 305, and its going to cost as much as it would to put a 350 in. and have the same power. Than you have something you can work with and make as much power as you want in the future. Bolting a set of heads on your 305 with no other changes will give you a little boost, but not enough to be worth whjat they will cost you. Plus, you still have a 305 which will only get you so far before you've reached it power limit.
Last edited by Z2887; Oct 14, 2009 at 09:15 AM.
Re: help i need to know what kind of heads i can put on my car to gain the hp up
would the chip help with the shifting if it is the problem cuz i read some where and it said i would but i think ur right that it does go into overdrive and do what to get up and go so if i put it in regular drive it would go a little faster and not in overdrive drive and it has the stock gears so how much would some gears be to put back there so it will help gain speed faster and im going to put the chip in so it wont turn the fans on sooner they have two diffrent ones and do they make a cold are kit for it sence the filters on the carb. ????? thanks
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: help i need to know what kind of heads i can put on my car to gain the hp up
Cheap one FS here
https://www.thirdgen.org/forums/engi...haft-chip.html
https://www.thirdgen.org/forums/engi...haft-chip.html
Re: help i need to know what kind of heads i can put on my car to gain the hp up
i want to buy an new one i dont my used stuff like that can anyone help with how i can make my cold air intake better sence i have my filter on my carb i dont know how u would do that it not like new cars intke there diffrent so if u can help that would be great
Re: help i need to know what kind of heads i can put on my car to gain the hp up
Instead of begging for help you need to conduct some minimal research on how cars work. As said there is no quick fix. This is not some movie where you can run to a gas station and get some turbo welded on to your civic. People work hard a study, research, plan, then build.
You wan't a higher revving car; Trade it for a Honda or something.
type in google : How cars work, take 3 hours to learn. And you will more then likely be able to use the knowledge you obtained to have a starting point.
You wan't a higher revving car; Trade it for a Honda or something.
type in google : How cars work, take 3 hours to learn. And you will more then likely be able to use the knowledge you obtained to have a starting point.
Senior Member
iTrader: (2)
Joined: Dec 2007
Posts: 541
Likes: 1
From: Concordia Kansas
Car: 1987 Iroc Z 1990 RS 1991 RS
Engine: 454 soon 496
Transmission: Soon T56
Axle/Gears: 308 Posi
Re: help i need to know what kind of heads i can put on my car to gain the hp up
I am sorry to also say it to. but yes its not a ***** that you can just bolt something on in a few hrs and expect spontenous hp. i have a 305 and it puts plenty of power out there. it runs with most of my friends for a 305. Just again look more research. LIke one thing you can do to help a lil is have edlebrock carb and intake. but of course mine is not TPI nor running anything but engine's basic needs deleted a/c, emissions ect...
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