i know u people ae going to say go with a 350. ok ill give u u might be able to make more power for the same amount of money. but who wants something thats been done to death when u can have something diffrent and will suprise ths sh*t out of people as far as 350's making more power i read in the august issue of hot rod and they have a 283 in there making 475 horses. it would scream at 8000 rpms.now thats some good number from something so small. it sure would suprise some 350's. so im sure u could do the stroker and put on some vortec heads and get a high compressing ratio add a little bit of nitrous and im sure u could be close or over the 500 horse mark. well let me know what u guys think and thanks for the help and the bad comments thanks.

 

When i had my 305, i considered the 335 stroker...but once I added up how much it would cost to get it all done....it ended up being the same amount as getting a NEW 350....so why do all that running around to machine shops and all to get an engine rebuilt when you can get a NEW 350 for the same amount. I just think it's more trouble than it's worth.

 

The problem lies in your pistons size sunny boy..... 305's are 3.75" while 350 and other "good" engines like 5.0 mustangs, 350's, 383's, 327's, 302's, 289's, havee 4" bores...... this is why 305's suck!

 

without being gay and trying to start flames (lord knows they are going through some peoples heads), the reason that 283 spun and made power to 8000rpm is because it has a much better stroke/bore ratio. it was capable of spinning alot more due to it has the better "balance" for it. a 305 has a small bore and with a 3.75 stroke you would have a square 3.75 bore to 3.75 stroke and that isnt designed to sping 8000rpm consistantly. the 305 has been bastardized to death, more promising results would come from supercharging a 305 than stroking it. just do your research and choose accordingly.

 

Dude, if I was a mod i'd take the banning stick to your ***.......You never post anything even remotely valuable. At least this out burst was coherant.

Don't be so ignorant

 

Yea if i was a mod i would too

 

lol

id love to smoke your @ss with my "sucky 305"

 

I've heard of people smoking alot of weird drugs...

but seriously.. ***?

 

Lol....i'd like to see how you role that up

 

Stuff that in yer pipe and smoke it

 

A 305 is very similar to all other small blocks. If you build it correctly a 305 can make some serious power and impressive RPM. The bottom end is the same as a 350 and will accept all the 350 aftermarket cranks and rods so you can build it plenty strong enough to handle 7000 RPM. The same holds true for a 335 stroker you can build it to operate inthe same RPM band as a 383 or 400. The holdup on a 305 used to be the heads, now their are a few good heads available for the 305 that will allow it to breath well enough to take advantage of the 7000 RPM range. You can use 350 Vortec heads, ported 350 Vette heads, AFR 180 cc runner heads are a few good ones that I can think of. A 305 can run very well if it is built correctly. 400 to 500 NA HP is not out of the question if it is built correctly.

 

Its not hte head size thats the issue, its the valve size and lift.

 

its funny that everyone says 305s are no good but nobody has any real numbers from them with the stroker kit so how do u know that they dont make any power. as far a 350s i have smoked tons of them with my sissy 305 in camaros so why r they so much better if i can bet them with a stock 305???????

 

This isn't the street racing board now

 

It's not that they don't make any power, its just that an equally built 350 is going to make more power and do it cheaper.

 

i know everyone is going to be like why but i want something diffrent to smoke some 350s i know it will be possibale and 600 isnt really that much for the kit with what it come with i dont know call me a dumbas* but i think it would be a decent motor to have and to build

 

Don't ask us a question, then question our answers.....
Besides, not a single person said the 335 couldn't make power....i said it wouldn't be worth the amount of money youd spend....and nobody else has given you a straight up answer...so WHO said it wouldn't make power? nobody. You question how we know what kind of power it would make.....i talked to the company that sells the stroker kit.....i can't remember an exact number (this was over a year ago) but it wasn't worth the $1500+ you'd spend. So how does your foot in your mouth taste man? From now on, if you want help, dont question our answers....makes people not wanna help you.

 

the reasons 305's are not highly desired were explained in detail and he comes back with smart remarks after he was the one asking questions because he didnt know.

 

****e, everyone just tell him to build it. It's his money, if he wants to spend more of it to go slower than so be it.

 

i agree he didnt ask what was better the answers you guys are giving him are he's not asking your opinions on it, hes asking what kinda numbers do they make.

Call up powerhouse and ask them what kinda power they made on a dyno, a guy here in town has a 335 stroker in his 84 z28 and its not bad but i can beat him with my car.

 

If you'll read what i wrote, you'll see that i've talked to powerhouse....and got an exact HP number....and i'm telling him that the amount of power it makes is not worth amount of money spent. So you either post something helpfull, or STFU.....you're just taking up valuable space. Oh, and whether you realize it or not...you helped prove our point. You said a guy in town has a 335 but you can beat him in your car....well your car is slow....so there you go, a 335 would be weak...thanks for the help partner.

 

Man, exactly...if he's not gonna listen to what we have to say, and is just gonna do it anyways, why the hell did he even ask?

 

305's are 3.75" pistons while 350's and other "good" engines like 5.0 mustangs, 350's, 383's, 327's, 302's, 289's, havee 4" bores

Isnt that True???

 

True, and that makes it a legit answer, as well as was mine, so lets all just disreguard TunedPortZ.

 

I personally do not feel that there is anything wrong with the 305, If you take the Truck Vortec 305 from arond 1997 they really have some serious power, even more power than a 1994 Truck 350.

I do not buy the 4" bore comment it does not seem logical. If this was true than a 502 would have no power because its not 4". I would buy the statement if it regarded the ratio between Bore & stroke, not the actual size of the bore.

You will find that an identically equiped Stock 305 TPI will roughly make 13% less HP than a 350 for a simple reason, its 87% the size.

What it really boils down to is displacement, heads, and the cam, other than that the 305 in our cars is essentially the same engine. (NOTE: If your running the 305 TPI M5 then you have the same cam anyway.)

The next time I put an engine in my car, I would personally start with a 350 because parts are slightly cheeper than a 305.

thats my $.02

John

 

irocz u did not give me the number though did u. as far as the motor not being a high reving motor tpis are not to be reved real high in the first place right? now do any of u have a tpis cat. cause in it theres a cam that is suppose to make a stock tpi 350 408 hp and 451 ft/lbs now if that cam is put in the 335 wouldnt it make some really good power? everyone tells there opinions am not trying to be a *** but i have had 350s and there not all that great really u all say go with a 350 why dont i just go with a 400 it would problay come close in price and make more power right so 350s arent so great after all. so back to the main ? does anyone have any real numbers

 

First of all, I told you I didn't give you the exact number because I dont remember the exact number....i know it was around 280HP...but I didn't wanna give you an estimate. I think the cam you're talking about is the ZZ9 cam...not 100% sure but i think that's what you're talkin bout. If you're going to put a cam that big w/ the 305 heads, you'd have to get some springs that could handle the lift ($200 or so), some rockers would help ($200+), then of course to get the most out of the cam, you need good flowing heads, so you'd have to port your heads and get a valve job, or buy some world products head and port them and give em a valve job, or get some aftermarket 350 heads, but then your compression would suck, and you'd be slow anyways. So you see....it's just not cost effective to go w/ the 335. How many times do i have to repeat that. If you're not gonna listen....then just go ahead and buy the kit, and stop wasting our time.

 

Just get the kit, some swirl port heads, TBI, the peanut cam and lg4 exhaust and you'll be ready to rock! No really though, I think the 400 is a way better idea. I don't know anyone who has actually built a 335 or I would give you some power estimates.

 

first off i think i said about getting vortech heads from the start wait ill scroll down hang on a sec. yes i did say about getting vortech heads. i have seen these heads all done up with springs to handle up to like 550 lift for like 400 dollars now thats not to bad right? as far as compression i dont want the whole kit im thinking maybe just the crank then get some high compression piston. as far for 600 dollars for the kit how good could the pistons be in the first place? find some decent rods for on it. now as far as the heads do anyone know if the values would clear the smaller bore and if it wouldnt how far would i have to bore it? these might be stupiod ? but isnt this bored for that i thought there was something where u couldnt bash on someone? dont get me wrong i do know the 350 would make more power. if i get the right parts i think i will make more power then most common 350s built. here we go with the price issue isnt the reason why we have these cars is to customize them in sorts ur car is a part of ur personnalty. how many other cars do u want to see like urs and run like urs. i know i dont want to see another like mine i want it to be diffrent. that way u can get someone to say holly sh*t that cars pretty bad as*. now am i right all i want is people to give me some hints and some tricks to get it to wrong and go into the upper 400 as far as horse power. well that all i really have to say right now. thanks for all the opinions have a nice day.

 

First.. the point is with the small bore that a 305 is limited on valve size. Slap a set of 2.02's on there and you will see that it will hit the sides of the cylinder. Hence the 305 suffers from valve shrouding, therefore limits airflow in and out of the chamber. Now a 502 has a larger bore size and supports huge valves. However if I try and stuff some monster valves that would encounter the same effect, but since its a big block.. hehe..

 

To answer your question about the 350 Vortec heads and valve size, yes they do clear the stock 305 bore. You can actually run the stock Vortec intake valve and a 1.6 exhaust valve in a 305 with no clearance problems. Like I mentioned before, the 350 Alum Corvette heads will work on a 305, the AFR 180CC heads with the 1.94 valves, and the Vortec heads to name just a few. A 1.94 intake valve is plenty large enough to support a 305 or 350 in the 400 to 500 HP range. My Vortec heads with a mild bowl job and 1.94 intake and 1.5 exhaust valves flowed 246 CFM intake and 182 CFM exhaust at .500 lift. Those flow numbers are capable of supply enough air to support 490 NA HP if the rest of the engine is built correctly. The small 3.735 305 bore does not limit the air flow capability of these heads. There is no magic rule that says you need a 4.0 bore to make power. The advantage of the 4.0 bore was that were able to get decient flowing aftermarket heads for the engine when no heads were available for the small 305 bore. With the advent of good flowing heads for the small bore 305, you can now build a powerfull 305 or 335.

 

thanks bjankuski for the helpful info have a good day

 

I told him he could run some 350 heads....but here's the problem. Compression. An LO3 has what....8.5 to 1 compression. And that's w/ 58cc heads. So you slap on some 64cc heads, and that's gonna be some damn low compression. Now there's a few ways he could fix this. Some high compression pistons might help, i dont know too much bout em so i'm not sure....but that MORE MONEY he'd have to spend. He could get some aftermarket heads and get them milled down to 58cc if they aren't already...but thats MORE MONEY. He could get some L98 vette heads, but for them to be able to flow enough to make the kinda power he wants, he's gonna have to get them ported and get a valve job...MORE MONEY. So ya see....nobody is saying the 335 wont make power. But by time it's all done, he'll spend an *** load of money to REBUILD an engine, and still be slower than a lot of cheaper crate motors. Lemme repeat that, nobody's saying the 335 wont make power. I'll tell you what.....he wants 400 HP, i dont think he'll be able to get it w/ a 335 w/out going to carb....

 

You know what man....it's your money, so do whatever the F*CK you want. But lemme ask you this....have you ever wondered why NOBODY on this fricken board has gone w/ a 335? There's a reason for that, which i've been trying to explain....but you just dont wanna listen. Good luck

 

This is just degrading into a silly flame fest.

If you want to throw a bunch of money at a 305 and make a 500hp 334 stroker, be our guest. At this point it should be painfully obvious to you that noone here is running one, and noone with an eye for performance per $$$ is going to think it makes the slightest bit of sense. Build your magic unique engine and come tell us how great it works. In the meantime, stop arguing with your imagination.

And IMO there is nothing unique about any displacement SBC anyway. Even if you build a 500hp 334, noone will believe it's a 334 anyway. Might as well build a 500hp 400 for half the money and you could STILL tell people it was a 334. Unique would be a big block swap, or a hot V6 swap, or custom twin turbos, etc. An SBC is as vanilla as the new flavor of coke...

In closing, there is a reason bigger bore engines have an easier time making power and it isn't just because of better head availability. Valve shrouding will always be a real factor. The plethora of small CI, big bore engines making big power, and dearth of small bore long stroke engines doing the same should help drive this point home if the physics alone doesn't make sense to you.