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305 hp engine?

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Old 12-25-2008, 12:17 AM
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305 hp engine?

How fast do you think a 1986 would go with 305 horse,
0-60
1/4 mile ect.

Please answer.
Old 12-25-2008, 12:36 AM
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Re: 305 hp engine?

the 86 if it has a stock motor is a 305 Cubic Inch Displacement motor, it is not 305hp, in fact its much less depending on what engine u have exactly it could be rated from as low as 155hp to as high as 190hp....man got to love all that power....lol. but it will probably run 16s id bet.......
Old 12-25-2008, 04:37 PM
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Re: 305 hp engine?

I didnt say it was the factory engine, because it isnt, but the 16s? is that for the 305 hp or the 155? thanks
Old 12-25-2008, 05:00 PM
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Re: 305 hp engine?

Originally Posted by Mrgref92
I didnt say it was the factory engine, because it isnt, but the 16s? is that for the 305 hp or the 155? thanks
16s is for the 155hp motor..how do u know the engine has 305hp? u just guessing? give engine specs and gear ratio and what trans ur running and at least a guess at the weight and we can point u in the right direction of what times u might pull down, but the reason i am the only person who has answered u is probably cause of the lack of information on your end.....

Last edited by igotta355z28; 12-25-2008 at 05:05 PM.
Old 12-25-2008, 07:20 PM
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Re: 305 hp engine?

How do i find the engine specs, the gear ratio, and what tran im using? im new and trying to learn about cars and all i know is the trans is a stock 1986,im guessing the wieght is about 3500 and the engine that im going to use was a 305 H.O. that had been worked on that came from a 1985 monte carlo, he told me it probably has 300 or so horse,so any info from here would be much apreciated. thanks again.
Old 12-25-2008, 08:25 PM
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Engine specs: Get the information from the person that put it together. Cam specs are a vital piece of the pie. If they can't tell you anything, get the casting numbers off of the block and heads. If they can't tell you anything about the cam, assume it's stock.

There are different ways to rate horsepower. The factory uses "net" at the flywheel, which is the engine on a dyno, being operated by the induction/ignition as it would be in the car, with the accessories powered by the engine like they would be in the car (alternator, water pump), exhaust and air cleaner like they would be in the car. When someone says they've modified an engine and it now has "300 HP", they're using (or guessing) engine dyno "gross" flywheel power - whatever carb/induction/ignition they want to run, open headers, no accessories powered by the engine, velocity stack on the carb (if a carb is used), etc. So, 155 "net" flywheel HP is about 200-220 "gross" flywheel HP.

You can also use a chassis dyno, that takes everything, including the transmission, into account.

If the car has a stock '86 automatic transmission, it's a TH700R-4 with lock-up torque converter.

I would guess it would run high 15's, if it is at all put together right, with traction.
Old 12-25-2008, 10:25 PM
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Re: 305 hp engine?

Ill try and find some more info on the engine, but thanks for all of your input
Old 12-26-2008, 06:31 AM
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Re: 305 hp engine?

we all know where your coming for your anxious to know how the car might do, and if u find out the info that fivesevenkid pointed out we can probably help u guestimate. But the best thing to do is, dont brag to your friends, dont tell even a guy with a geo metro that you can beat him when your cars ready. If someone asks how fast it is just say i dont know yet, and when its all ready to go take it to the strip and see what shell do, this way if she runs great and pulls down low e.t.s youll be happy and everyone will be impressed, but if it doesnt perform well wich is most likely the case (most people dont run too great with mystery eninges) you wont look like an *** to anyone for talking crap and not being able to back it up, i say this all as just a small bit of advice i know your a lil young, and im only a cpl years older then you but ive done exactly what i just told u not to do when i was bout 17 and man did i look stupid so dont think im acusing u of being a mouthy kid or anything just a bit of a heads up cause i know that with ure first v8 car u seem to get a feeling of invinceability and its a big reality check when u run ur first couple times and ur no where near as fast as u thought u would be, but dont let it deter you, everyone has to have a starting point and then you can figure out what to do to get better......so have fun and find us some specs!!!
Old 12-26-2008, 09:57 AM
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Re: 305 hp engine?

Well i havent been bragging,and your right im only 16, but this is going to be everyday car, i just wanted to know if it would be sorta fast, but again ill find out some engine specs and post them.
Old 12-26-2008, 11:06 AM
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Re: 305 hp engine?

if you said 85 engine in an 86 camaro you should remember that the cutoff date for gm engines was in 85. generally an 86 and later engine is different, smog rules, cams, and the 85 and older stuff have to be modified to run fuel injection.
nothing against the engine, but you are swaping an old technology engine into a newer technology fbody.
anyone feel free to tell me if i have the dates wrong, jump in. i do know that the 290 hp 350 for 85 and older applications will not run my tpi and computer stuff until i change out the cam, and a lot more other stuff.
and i dont think he is going to get a 305 hp 305.
there is one guy at http://www.goingfaster.com/spo/325_h...chevrolet.html who thinks he can get 325 hp out of one, but if he can i dont think it will pass smog.
Old 12-26-2008, 02:47 PM
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Re: 305 hp engine?

Yeah its an 85 going into an 86, but both a carb, not tpi, still trying to get specs.
Old 12-26-2008, 03:12 PM
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Re: 305 hp engine?

Don't be so quick to down the 305. Of course the old saying "there's no relacement for displacement" is true, but I don't think 305HP would be that difficult to wring out of one. I have a friend who has two third gens, a 305 H.O. and a 350 TPI. Both with 700R4s. Both are stock with headers and KnN filters. The 305 car will walk all over the 350. I know it shouldn't, but it does. As far as we can tell both cars are in perfect working order. All I'm saying is even though they all came from more or less the same place, some seem to be stronger than others. If you wanna know how it does on the street go pick a fight with one of the newish V6 maximas. They got 300HP. See how you do. If you can shut the ricers down with authority, then you gotta heathy 305.

I also saw an article in HOT ROD magazine ( I think ) that built 3 undesirable engines to see if they could be made strong. They built a 305, a dodge 318, and I don't remember the ford, but all of the engines made 400+ HP. Now obviously no one would decide to build a 305 instead of a 350, but it's not impossible.

Plus I've owned several 305 powered cars and I never had any problems. They're not that powerful stock, but they are a good reliable workhorse.
and I'm actually building a basic 305 to go into a convertible just for a nice gas sipping cruiser. The bottom line is if it feels strong then don't worry about it. run what you got untill your ready to build something stronger.
Old 12-26-2008, 04:09 PM
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Re: 305 hp engine?

yeah its not that hard to get 1hp per cube from a sbc. 305s can easily make 305hp if u do things right. And thats good u havnt been braging or running ur mouth like i said i wasnt acusing ya i was just givin some heads up experience from when i was stupider the mistakes i made lol. Oh and when she is running around if u can find a 3.5 V6 altima Coupe thats a good race. The new 2 door altimas with the 3.5 are stout my Gf has one i convinced her to let me run it down the old 1320 once it pulled down several low 14s....anyways get the specs a stay positve......
Old 12-26-2008, 08:01 PM
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Re: 305 hp engine?

I might be getting the specs tomorrow because I might be putting the engine in tomorrow, thanks for all of your input, but i'll make sure when i get the specs.



PS-The person selling me the engine has been working on cars for more than 30 years and he is helping me put it in and everything so he should know a lot about the engine.
Old 12-27-2008, 02:51 AM
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Re: 305 hp engine?

Trans, is it an auto or a standard =P Figured I throw that out there since the question was asked and not answered... lol
Old 12-27-2008, 01:54 PM
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Re: 305 hp engine?

It auto, ok i'm deffinatly putting the engine in tomorrow, so i'll post some specs soon
Old 12-28-2008, 08:05 PM
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Re: 305 hp engine?

ok, so I hear from this guy that the engine isn't necesarily stock but he didn't work on it he just pulled it from the 1985 Monte Carlo SS, Can someone tell me if this 300hp s*** is incredibly wrong, or right?, thanks.
Old 12-28-2008, 08:17 PM
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Re: 305 hp engine?

probably pretty wrong, it would take a healthy cam and good compression with some good heads to pump out 305 hp from the 305. Its probably putting out a lil over 200hp realisticly.......if you have no way to know how much hp an engine has just count it as stock. everyone and their mother will tell you they have a 300+hp small block chevy when 9 time out 10 they will be in the low 200hp range.........
----------
where are you located at? if your anywhere near me i have my old L98 long block thats been rebuilt and has a healthy cam in it ill let it go for 300, even help you install it for free................it would probably run circles around that 305.....

Last edited by igotta355z28; 12-28-2008 at 08:20 PM. Reason: Automerged Doublepost
Old 12-28-2008, 09:04 PM
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Re: 305 hp engine?

New York, but I already bought this engine so I'm gonna put it in, but Thanks for the offer, sounds like a better deal than I got I think but I don't need an engine for racing, but after i get this up and running my next real project is going to be a racing car, any suggestions on what cars are really good on the strip and engines and stuff would help. thanks
Old 02-07-2009, 07:29 PM
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Re: 305 hp engine?

Ok If anyone can still see this thread, I thought the guy didn't work on the motor, But it turns out that he did put a larger Cam inside, So with that said, Could this 305 HO make 295-300 horse?
Old 02-07-2009, 07:43 PM
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Re: 305 hp engine?

without know the specs of the cam, there is no way to tell. I would highly doubt it has that kind of power. Probably a stock motor with a cam, if it did really get a cam swap.
Old 02-08-2009, 04:22 AM
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Re: 305 hp engine?

Originally Posted by Mrgref92
Ok If anyone can still see this thread, I thought the guy didn't work on the motor, But it turns out that he did put a larger Cam inside, So with that said, Could this 305 HO make 295-300 horse?
Not with a cam swap. The 305 HO made 190hp stock
Old 02-08-2009, 06:55 AM
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Re: 305 hp engine?

You can make almost any car a good drag car.
That being said, alot of us race our cars. That's actually why I bought mine. I am in somewhat the same boat as you. My car runs just under a 16 now.
If you look around, as far a suspension these are good cars for the track. Subframe connectors are a must, I recommend moving the torque arm off the tranny. But other then that, a stock setup or aftermarket parts in a stock configuration can easily get you to 9's.
After that stronger trans, rear end, and engine. Keep in mind (don't know how much you know) do it one step at a time. Little things like fuel lines, bigger brakes, gauges and so on will get you with additonal cost. So when you budget, you didn't figure engough.
Also if you plan on a strip car, or even occasional street use, you will want a rule book so you know what you can do. Such as a front mounted fuel cell has to have a cage around it. (their actually a little more to that, just can't remeber at athe moment)
One last thought. A locker and slicks can help alot. But I don't remeber where I saw this so you will want to check, but if you run slicks your supposed to have a driveshaft safety loop.
Old 02-08-2009, 01:30 PM
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Re: 305 hp engine?

He said it's a Towing Cam, With a 700 Carb or somthing like that, Is that enough info, do you need more.
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