how do i get more power out of my 86' 305 4bbl???

im only 16 and i recently bought an 86' camaro z-28 with the 4bbl 305....it came with a bigger came cause the heads were shaved a little and it ran ok...im not sure but i was guessing like 170hp..it was up from my 3.0 tuarus but i want more power....!!!!!!!!i put some dynomax headers on but dont know where to go to next...it has high miles so im told a fuel filter replacement would help....pleas help me

How many miles?

dude, your only 16, give it a few years before you start trying to make more power. don't mean to be a dick, but trust me I've seen what young kids with fast cars do. Even if you say your not, your gonna and you know it.

fuels filters are as important on carbed engines than they are on EFI. they make efi do some wierd stuff when they are in bad shape but carbs use alot lower pressure so it doesnt seem to be a big deal.

I would look at something like a catback exhaust if you already have headers?

well, i agree with 92RS, i started driving on an old olds, moved up to the 89RS camaro, and then got the 89IROC as i got to be a better driver, but thats between you and your parents to decide, not us. especially if you paid for your own car.

So with that being said. The key to making power on any small block chevy is the heads and cam. the factory heads are pretty much trash, at least to most of us, im sure 92RS has something to say about that ;) As far as the heads, i only know of two affordable options, a set of World Products SR Torquers for a 305, or a set of vortec heads. the chambers on the vortecs are larger, and will lower compression a bit, but if you use steel shim gaskets, it should minimise this, and also you can have the vortecs milled up to .04 inches to decrease combustion chamber volume. but id do that as a last resort. Personally i would go with a set of vortecs, because they will flow much more air. The important thing to remember is that you have to keep the 1.94/1.5in valves because of the 305 blocks small bore size. To compliment these heads, i would get a dual pattern compcams xtream energy cam, given your otherwise stock setup, and your young age (hate to be a downer) i wouldnt go to radical here, stay below .5in of lift, i would reccomend a XE262H or smaller cam.

another place to focus, is to rebuild the carb, its seen alot of miles, and a carb needs a tuneup just as much as an engine does. having it freshened up and retuned, especially if you are modding the engine, will probly give you the biggest change in driveability, performance, and mileage.

Buy a 500-600 cfm edelbrock or holley carb and intake manifold. New plugs,wires,distributer cap and ignition mod. advance the timing unless it's alright. Does it have a posi rear end? if not find one.

im only 16 and i recently bought an 86' camaro z-28 with the 4bbl 305....it came with a bigger came cause the heads were shaved a little and it ran ok...im not sure but i was guessing like 170hp..it was up from my 3.0 tuarus but i want more power....!!!!!!!!i put some dynomax headers on but dont know where to go to next...it has high miles so im told a fuel filter replacement would help....pleas help me
Too tell u the truth I think the guys r right u don't need 2 much hp yet.But because u r into maros I'll help u. Lets see get a MSD 6al ignition and a 50,000 volt coil it will help your spark alot, plus it has a rev control (to keep u from blowin your motor when u show out in front of the girls,and i know u will hee hee ). A good catback maybe some gears in the rear end,and an eaton posi unit. You are really going to need a good carb, and heads and cam like 89iroc said maybe a compcams high energy (218/218 with .454 int lift &.454 exh lift.And to save money a set of vortec heads they flow alright.But you r gonig to have 2 freshin up the bottomend, with rings rod bearings and oil pump. And put a shift kit in the trans and buy a ratchet shifter so u wont miss a gear. SO thats all I think u need for now and good luck. :)

OH u will need to get a intake to fit the vortec heads with a carb. holley makes one.

Too tell u the truth I think the guys r right u don't need 2 much hp yet.But because u r into maros I'll help u. Lets see get a MSD 6al ignition and a 50,000 volt coil it will help your spark alot, plus it has a rev control (to keep u from blowin your motor when u show out in front of the girls,and i know u will hee hee ). A good catback maybe some gears in the rear end,and an eaton posi unit. You are really going to need a good carb, and heads and cam like 89iroc said maybe a compcams high energy (218/218 with .454 int lift &.454 exh lift.And to save money a set of vortec heads they flow alright.But you r gonig to have 2 freshin up the bottomend, with rings rod bearings and oil pump. And put a shift kit in the trans and buy a ratchet shifter so u wont miss a gear. SO thats all I think u need for now and good luck. :)

welcome to AF, but comeon man, the Camaro people already have a reputation for being the long haired hippie mullet red-neck group.

Lets try to at least make it look like we have taken an english class and somewhat paid attention to it. (that is why the min. age is 13) AF has enough ghetto talking "street slang" that we are trying to get rid of.

Thanks
Hypsi87

welcome to AF, but comeon man, the Camaro people already have a reputation for being the long haired hippie mullet red-neck group.

Lets try to at least make it look like we have taken an english class and somewhat paid attention to it. (that is why the min. age is 13) AF has enough ghetto talking "street slang" that we are trying to get rid of.

Thanks
Hypsi87
What do u mean what was ghetto,or street slang about what I said?

buy a motor rebuild kit and get your 305 to become a 350! Always helps with power, that or throw in a crate motor with an upgraded fuel system! (This is only if you have the money and the knowledge) otherwise Do what they said ^^

um, you cant turn a 305 with a 350, especially with a rebuild kit, you would have to bore it out from a 3.736in bore to a 4in bore. but you cant do that due to the placement of water jackets in the 305 block. only way to "turn" a 305 into a 350, is to turn the 305 into a boat ancher, and replace it with a 350 block.

What do u mean what was ghetto,or street slang about what I said?

nothing was ment, it was more or less a joke refering to the incomplete words in your post, they don't bother me but, somepeople get their panties in a bunch by it.

Basically an excuess to give you camaro people a hard time with the whole I have a mullet and I date my sister image. (That is what I hate about the internet, no way to post sarcasim.)

I would never date my sister...she is way too old for me.

lol, so your family wont stop ya, but a number will??? please. ;)

I would not date any member of my family.
If anyone replies anything about one of my family member's it's personal... none of you can or will have her!....

ok this is starting to get annoying.... i keep hearing about this hot cousin of yours, and have yet to see a picture, what thread was it, or is there a pic in your gallery. not horny, well, maybe i am, but im also damn curious, i hate being left out in the dark!!!!!

immenent death...

his cousin is hot too.....ill find ya a pic 89

Hi, Just put a 86 305 in my old 78 chevy pick up ,had 86k on it, ported and polished the heads and installed a old 350hp cam out of a 70's vett nice smooth idle but still gives it some guts ,will smoke the tires takeing off an still getting about 18 mpg , the cost of gas is why I went with 305 built a 383 for it so for now its still on motor stand , head work an cam helps a lot . good luck Slim