oracle646

I was tlaking to a friend of mine I told him i wanted to put a 350 and get a 320 Horse or so. And we got talking he said ask and see what we can do with a 305 as far as modding it out. I am looking for about 320 horse not sure how much torqu but a good amount.

I want to know if it is possible to get to 320 and what are something I can do to the 305 to not have to put in a 350 and make it a killer on the streets just like anyone would want. But just curious.

Please if you get what I am shooting at leave some more info, or post so I can reply.

Thanks so much

IROCmonkey

Well a big help would be where are you starting from, there is a big HP range in the stock 305's everywhere from 160hp to 220hp approx.

Then ----->

That being said, just about any mod that can be made on a 350 can be made to a 305. You will see the best bang for your buck with #1) full exhaust (headers, bigger ypipe, hiflow cat, bigger Ipipe, freeflow muffler) then #2) an aftermarket cam and improved valve train with ported heads.

The exhaust and the cam are the biggest limitations in the stock setup.

oracle646

That sounds real good. What might be a rough estimate on a basic set up for that, and also what is a good ratio for beating most cars on the streets civics etc, as far as Horse Power, and torqu.

IROCmonkey

depends on the cam and what sort of inductions system....since this is the TPI forum, can I assume you have a TPI fed 305?

TPI 305 usually ran around 210hp stock, a mild cam upgrade, improved valve train, ported heads and full exhaust would probably bring you up to the 250 - 280hp range, depending on the parts chosen and the general overall condition of the motor.

Well if you plan on drag racing (for the sake of legality and safety, im goin to assume it will be at a sanctioned track), you don't just need HP and torque, you need to have the suspension and tire to but it to the pavement.

Also what kind of transmission do you have? What shape is it in? If you start making any respectable numbers off the motor, you will tear up the trans in a hurry, same with the rear end, unless they are in top shape.

Keep in mind that if you are trying to race small import "tuner" cars, they often have 1000lbs weight advantage and with some $$ and a catalog can be bolted on enough power adders to make them damn quick. A small block V8 however is much better platform to build serious HP

oracle646

Yes it is a 305TPI AUTO. I mean I am not really wanting to crush people on the streets just give most people a real challenge you know.

What does LB9 V8 and LG4 V8 mean? In this link in 3rd gen is says all of those camaro's they made in 87' but how do I know which one mine is beyodn when they just say A4 for automatic four speed? So I know how much Horse Power I have and Torque. And how Can I find out?
https://www.thirdgen.org/1987-chevy-camaro

I think the motor for the most part is in good condition and the rest of the car following. I am not sure what kind of transmission the had unless you just mean auto or manual. Which it is auto.

And for what you metioned on what I might do to upgrade do you think I would be looking at like a 1000$ or more?

And sorry for all the quick questions they all kind of just came to me real fast lol THanks so much again for the help. Really appriciated!

tpg4camaro

iTrader: (2)

for trans its prob. 700r4 what year is your car? Get a underdrive pulley 15-20 hp. I got shorty hooker headers took off the cat any body know if that can be a prob? now Im thinking of getting long tube heads. the shortys connectinon were they end are touching the bottom of the car and souds horrable anybody have that prob?

pandin

Unless you DIY $1000-$1500 to update tranny is ball park.

irocz28boy

iTrader: (2)

If yours is a 305 TPI, then you have the LB9. And the tranny should be a 700R4.

oracle646

How good is the 700R4 Transmission? Like I said I don't know much about this stuff. Is that good? Or just kind of in the middle?

rockin rs

As far as the 700r4 goes, you would probably be better off with pretty much anything else. Just personal preference, but I put in a th400. Nothing will bolt up though, you'll have to get a shortened driveshaft, a new torque bar, a new crossmember, and make a tranny mount out of steel, but it's perfectly do-able and worth it.

oracle646

And How much did that run you?

IROCmonkey

While I will agree that the stock 700r4 will not take abuse for very long. They (just like most any trans) can be rebuilt better than stock. 700r4's can be built to take hp and torque in the 400+ range.

As was said an LB9 is the 305 TPI motor, an LG4 is the low end carb 305. A4 represents the 4 spd auto, in these cars that is the aforementioned 700r4.

For what a trans swap will cost, the 700 can be built to take the abuse.

the mods I mentioned, can be done in the $1000 range depending on which parts you choose, and your level of skill. If you plan on paying someone else to do the work triple that figure.

Of course that doesnt include suspension upgrades to handle the power or upgrading the trans either. It is very easy to spend money on these cars they are almost as expensive as women.

pandin

To update exhaust, headers, cats, and cat to the back.

easy to spend, if hired done, $500-#1000.

waverunner999

im not sure how much horse power my 85 trans am tpi with a 700r4 was putting down but i had a ported plenum and runners and a hooker cat back exhaust and drag radials and managed to pull off a 1.9 60ft and a 12.95 at 109 mph on a 125 shot of nitrous. and the car was then in an accident and after 3 years ive decided to pull it back out and revive it and im installing a cam not sure on the specs yet and a torque converter and different heads and a set of long tubes and true duals and switching to a 175 shot and hoping to hit a 12.0 or hoping for 11s but will see.

mypontiac

I added a Procharger and dynoed 343 HP to the rear!

Oh, and all the necessary mods to go with it!

DukeofHurl

Personal opinion but, I wouldn't worry about the tranny until it breaks. Sometimes you get lucky and can use and abuse it and it doesn't break. Sometimes you breath on it and it needs a rebuild. I would do what you want to the car and uprgrade as necessary. Otherwise, depending on how much cash you have may end up with a drivetrain that can handle 400HP but be stuck with a 200HP setup because you were afraid of breaking something and ran out of money before you could make your car faster. You may end up with a 200HP car that shifts good and can take the abuse of higher HP engine, or you may end up with a 300HP car that's parked because you blew the tranny apart and can't afford to fix it. I'm in the same boat as you. I am willing to roll the dice and hope I can have fun with my car b4 it blows itself apart. Personal prefernce will determine what you do I guess. It's a crap shoot either way.

TheRealBlkBird

Just put nitrous on it and have a blast with it 'til it breaks. While you're enjoying it, be building up a 350 to replace it.

Shamble

Id redo the ignition system with MSD (coil, distributor, capnrotor,wires) good plugs, good exhaust system (headers, ypipe,muffler,cat)...Air intake get some K&N air filters and remove the baffles in the airbox. Think about investing in SLP intake runners with a intake manifold. I think the stock intake runners really degrade power. Easy cheap fast bolton upgrades all addup. Unless you wanna do engine surgery this might be a good route for you to take.

walkthelin3

Im kinda dealing with this issue myself... The only problem is.. Should i get a 350 tpi or just build up my 5.0... I have 2 grand and mines 5 speed... Best bang for your buck.. Any advice?

spurgeon76

I agree, with a 305 I wouldn't want to spend my time and money for the return you are going to get. Just throw a bottle on it and have fun!

ninetyone

iTrader: (2)

http://www.chevyhiperformance.com/te...i/viewall.html

good article on a 305 tbi

mypontiac

You could do what I did!!!!

https://www.thirdgen.org/forums/powe...-brag-but.html

Sean

rusty vango

about $3500 gets you a killer 305,its just what do you wanna do man?

walkthelin3

List parts?

ninetyone

iTrader: (2)

You can do it for a lot less.

walkthelin3

What canni get for that much to bump up the horse

t/a350vtpi

BTDT -- I was not happy till I put in a 350 for the 305. Waste of time and money on the 305. Don't get hung up on the HP numbers. Torque is what really matters.

walkthelin3

How much worse isvthe milage?

NowhereFast

No.

If that was the case, the 350TPI cars would be a lot faster than they are.

Torque gets you off the line, HP keeps you going.

ninetyone

iTrader: (2)

The 350 cars are. They are much faster than you think. They will have no problems with any modern v6 car and with bolt ons the 350 cars can compete with new v8 cars.

Orr89RocZ

iTrader: (20)

With cleaned up stock heads, good valve job, bowl blend, fresh springs, shaved down abit for abit more compression, cam in the 212-220 deg range, aftermarket TPI or short runner intake like Stealth ram/superram, you can probably get 320hp. More cam and short runner intake like stealth ram, likely can get up near 400. mw66nova on this site has run 12.3's at 108 with a carbed 305 build...using 416 head castings, 230 deg flat tappet cam, dual plane intake. Big cam for a 305 but needed to make the hp with restricted heads.

86camaroproj83

hey all heres the thing i havent been under a hood since my first car a 85 camaro back in 1998 now im finally getting one back but its a 86 this time and reading everything on here i need a list of parts since i can put things together and fix what is broke. its talking about the numbers and stuff like that gets me but if i had a list of parts to get for my 305 to get her up in the 300hp or more. that would be great and i was wondering with a 86 more power out of the engine can it handel it all the way to the ground little help would be great guys

cheers

rusty vango

it can be done ,but its spendy

86camaroproj83

Ya it will give me something to do I traded my boat so instead of putting 4 grand year into that for docking and everything so now I'm going to put it into the car why not. I was going to turn it into a manual too I can do it I just need part numbers and gears and so on. Keep in mind tho I'm not spending tens of thousands more like a couple thousand

1987-TA

Was sitting here reading all the input that everyone has and read some good stuff so figured I'd share.
What I think is a great setup for some one that wants power but not a lot of work. Don't swap your 305 for a 350 unless you like always continuously working on your car. A 350 is a good stock motor But a maintenance hog when you start building them. the 305 motors are almost bullet proof. I would rip out that junk 700r4 trans and put you a 350 turbo in it. (They can take abuse) A 400 is more for an experienced driver cause they really put the power down and if you don't know what your doing the car will get away from you. Cam wise back in the day they didn't have A lot for the 305 but know they have tons of cams and stuff. As long as you keep your cam range less then 500 you won't have to change anything else in the motor but the cam and still make great horsepower. Cams start out around 150 bucks there cheap. But with all things the bigger the more expensive. I'd slap shortly headers full exhaust a nice intake and good carburetor on it and be done with it. All I miss with are ta's I've got 1 87 trans with 305 1 93 with 5.7 ls and the baby 78 with a 400 the one I never have to work on is the 305 I can get in it and smash on people day in and day out and oil have to change my oil a few times a YEAR. Other then that I don't touch it.

So I say 305 nice cam turbo 350 trans full exhaust and have fun....

Bigtommer

I had a buddy with an 89 z28. He was running mid 12's with a 305...although he did have a whipple charger and completely upgraded intake....Motor was stock though