305 + 400 crank= 335?
#2
I think you just basically need a 383 stroker kit but 305 pistons instead.
I think it comes out to 337 with a .30 overbore.
check out powerhouse, they have a website, they also advertise in all the mags.
They sell the kit.
I think it comes out to 337 with a .30 overbore.
check out powerhouse, they have a website, they also advertise in all the mags.
They sell the kit.
#3
Supreme Member
Joined: Apr 2001
Posts: 4,969
Likes: 0
From: USA
Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
A 305 block bored .030" over, and the 3.75" stroke crank (400 crank) will actually be a 334, but everyone says 335 just cus it sounds neat.
powerhouse website is
www.enginekits.com
they got a link to click to get pricing.
AJ
powerhouse website is
www.enginekits.com
they got a link to click to get pricing.
AJ
#4
Supreme Member
Joined: Jul 1999
Posts: 18,457
Likes: 15
From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
This topic comes up all the time. Here are copies of it from the last couple of days:
https://www.thirdgen.org/techbb2/sho...threadid=72393
https://www.thirdgen.org/techbb2/sho...threadid=33583
Yes, it can be done. Yes, it works. Yes, it will make slightly more power than a 305 would have originally. But, is it the right thing to do? That's highly questionable. If you draw 2 columns on a sheet of paper and list the expenses and hassles of doing that in one, and the expenses and hassles of installing a "bore kit" (otherwise known as a 350 long block) in the other, I think it will become immediately obvious why it's nto a good idea except in highly specialized circumstances.
I recommend against it. Personally I like to get the most possible results out of my money; and the 334 isn't even close. Not only does it cost more than buying a 350 motor outright and doing the same machine work to it to rebuild it that would have to be done to create the 334 as well (i.e. no cost difference in the machining), but you end up with a grossly inferior motor to a 350 besides. Hmmm..... spend more on the 334, get less than the 350...... somebody help me here, I'm like totally struggling with tis concept, maybe I should consult my financial adviser to see if he has any wisdom to offer....
https://www.thirdgen.org/techbb2/sho...threadid=72393
https://www.thirdgen.org/techbb2/sho...threadid=33583
Yes, it can be done. Yes, it works. Yes, it will make slightly more power than a 305 would have originally. But, is it the right thing to do? That's highly questionable. If you draw 2 columns on a sheet of paper and list the expenses and hassles of doing that in one, and the expenses and hassles of installing a "bore kit" (otherwise known as a 350 long block) in the other, I think it will become immediately obvious why it's nto a good idea except in highly specialized circumstances.
I recommend against it. Personally I like to get the most possible results out of my money; and the 334 isn't even close. Not only does it cost more than buying a 350 motor outright and doing the same machine work to it to rebuild it that would have to be done to create the 334 as well (i.e. no cost difference in the machining), but you end up with a grossly inferior motor to a 350 besides. Hmmm..... spend more on the 334, get less than the 350...... somebody help me here, I'm like totally struggling with tis concept, maybe I should consult my financial adviser to see if he has any wisdom to offer....
#5
Supreme Member
Joined: Apr 2001
Posts: 4,969
Likes: 0
From: USA
Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
Ya see RB83L69, it's like this......
I can kinda understand were some of these thoughts are coming from. One thing you gotta remember (actually 2 things) is........
1. Cost of gas. It's going up (on average) every year. Some people are using their cars as commuter cars. They want the best highway milage they can get, but still want a little more performance over stock. Same reason you can't buy any big block new cars anymore.
2. When the person gets enough money (translation-Need for speed!!!! ) to get a 350 block, all they gotta do is buy new pistons (not including rings, bearings, etc.) right? Every other part that you would use to build a 334 are the same parts they use to build a 383.
Even I used to think it was cool to have a small motor that got decent gas milage, and ripped asphault. My first car was a 4-dr '65 Merc. Comet. It came with the "High-Po" 289 (solid cam and 4bbl Holley). It put out a whopping 225hp. And that was before the BHP thing. That was Gross HP.
But actually, it got pretty good MPG, and I could blow away anything that was newer and high-po back then, (this was in '87) from a Monte SS, a Z28, a Mustang GT, and even a Trans Am. Now some of these were also late 70's early 80's cars--SO NO FLAMES, OK? That's all high schoolers could afford.
Everyone would ask me "What's under the hood? a 460?"
I would tell everyone that it was a 289, but nobody would believe me. So after a while I started telling people it was a 460, just to shut them up. Then they believed me.
I don't think it's a bad choice for a virgin engine builder. You wouldn't suggest a 550hp 383 for a guy who's building his first engine, would you? That's like telling me to go fight Mike Tyson.
If someone were to ask me what I would do if they were gonna build that engine, I would tell them I would use the stock heads. I'd clean them up, pocket port them, and throw 'em on.
The biggest valves you can use is 1.94/1.5". But then when I build the 383(not "if", but when), I could buy new heads, and not have wasted money on heads with valves that are too small for a 383.
But other than that.....I say go for it.
AJ
I can kinda understand were some of these thoughts are coming from. One thing you gotta remember (actually 2 things) is........
1. Cost of gas. It's going up (on average) every year. Some people are using their cars as commuter cars. They want the best highway milage they can get, but still want a little more performance over stock. Same reason you can't buy any big block new cars anymore.
2. When the person gets enough money (translation-Need for speed!!!! ) to get a 350 block, all they gotta do is buy new pistons (not including rings, bearings, etc.) right? Every other part that you would use to build a 334 are the same parts they use to build a 383.
Even I used to think it was cool to have a small motor that got decent gas milage, and ripped asphault. My first car was a 4-dr '65 Merc. Comet. It came with the "High-Po" 289 (solid cam and 4bbl Holley). It put out a whopping 225hp. And that was before the BHP thing. That was Gross HP.
But actually, it got pretty good MPG, and I could blow away anything that was newer and high-po back then, (this was in '87) from a Monte SS, a Z28, a Mustang GT, and even a Trans Am. Now some of these were also late 70's early 80's cars--SO NO FLAMES, OK? That's all high schoolers could afford.
Everyone would ask me "What's under the hood? a 460?"
I would tell everyone that it was a 289, but nobody would believe me. So after a while I started telling people it was a 460, just to shut them up. Then they believed me.
I don't think it's a bad choice for a virgin engine builder. You wouldn't suggest a 550hp 383 for a guy who's building his first engine, would you? That's like telling me to go fight Mike Tyson.
If someone were to ask me what I would do if they were gonna build that engine, I would tell them I would use the stock heads. I'd clean them up, pocket port them, and throw 'em on.
The biggest valves you can use is 1.94/1.5". But then when I build the 383(not "if", but when), I could buy new heads, and not have wasted money on heads with valves that are too small for a 383.
But other than that.....I say go for it.
AJ
Last edited by AJ_92RS; 12-22-2001 at 12:28 PM.
#6
Supreme Member
Joined: Jul 1999
Posts: 18,457
Likes: 15
From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
No, I wouldn't suggest a 550 HP 383 for somebody's first build. I also wouldn't suggest any other engine that requires that he (a) clearance a block himself to fit a special crank, and possibly require a special cam as well; or (b) pay somebody else to do expensive specialty machine work to produce an inferior smaller engine with a tiny bore, when he can get the superior engine with no special machine work at all.
Considering that creating a 334 requires exactly the same level of expertise as the 383, I would recommend that if somebody was going to go to all that trouble and expense, they should apply it to a 383 instead of a 334. It would be about like deciding that I was going to put a $4000 paint job on something, and all I have is a 72 Pinto. I would not waste that kind of money on that car, I would go get a car whose appearance (and value after the fact) would actually be affected by this killer paint job.
We're back to economics again. Hmmmm..... I've never touched an engine block before in my life, I could buy a kit and pay somebody to do all this special machine work I don't even know what it is for me so I don't trash something; or I could just go to the junkyard and buy the better motor in the first place for less money than the special kit let alone the machine work to install it, do the simplest possible rebuild procedures that involve no risk at all, which I could do a greater portion of myself, lowering the total cost even more.... and if I take the second option I have a larger, more powerful motor.... again, we just keep bumping up against the question of "what do you get for your money"? The 334 loses by that standard, as well as losing the race, compared against a 350. "Just to be different" looks a lot less attractive all of a sudden when you're looking at somebody's taillights as they drive away from you, and you realkize that they spent less to get where they are than than you did.
Considering that creating a 334 requires exactly the same level of expertise as the 383, I would recommend that if somebody was going to go to all that trouble and expense, they should apply it to a 383 instead of a 334. It would be about like deciding that I was going to put a $4000 paint job on something, and all I have is a 72 Pinto. I would not waste that kind of money on that car, I would go get a car whose appearance (and value after the fact) would actually be affected by this killer paint job.
We're back to economics again. Hmmmm..... I've never touched an engine block before in my life, I could buy a kit and pay somebody to do all this special machine work I don't even know what it is for me so I don't trash something; or I could just go to the junkyard and buy the better motor in the first place for less money than the special kit let alone the machine work to install it, do the simplest possible rebuild procedures that involve no risk at all, which I could do a greater portion of myself, lowering the total cost even more.... and if I take the second option I have a larger, more powerful motor.... again, we just keep bumping up against the question of "what do you get for your money"? The 334 loses by that standard, as well as losing the race, compared against a 350. "Just to be different" looks a lot less attractive all of a sudden when you're looking at somebody's taillights as they drive away from you, and you realkize that they spent less to get where they are than than you did.
#7
Um, AJ you are wrong on alot of points, ill respond to them in the quote (look hard) Im with you RB... this whole notion of stroking a 334 has me absolutely confused. Maybe I missed something too.
BTW aj, so as to prove im not biased, I run a 305 .030 over (that makes a 310) with a big *** cam, h.o. heads that are ported to all hell, a single plane, headers, all that noise and its down right slower than ****
build a 350, unless you get the stuff near free like i did
Originally posted by AJ_92RS
Ya see RB83L69, it's like this......
I can kinda understand were some of these thoughts are coming from. One thing you gotta remember (actually 2 things) is........
1. Cost of gas. It's going up (on average) every year. Some people are using their cars as commuter cars. They want the best highway milage they can get, but still want a little more performance over stock. Same reason you can't buy any big block new cars anymore.
Um, saying a big block vs a small block is analagous to a 350 vs a 334 is WAY out there man. When the displacement is so close in size (15 friggin cubic inches!) youll see NO difference in fuel economy. Especially when you consider the ways youd have to build either motor to create the same power. The 334 loses on all counts, you could easily build a 25 mpg 350 putting out upwards of 350 hp. That would be a huge stretch with a 334, the bore simply isnt large enough to support any decent heads for that long stroke.
2. When the person gets enough money (translation-Need for speed!!!! ) to get a 350 block, all they gotta do is buy new pistons (not including rings, bearings, etc.) right? Every other part that you would use to build a 334 are the same parts they use to build a 383.
Im no expert on this, but youd probably have to rebalance the whole rotating assembly to accomodate for the heavier pistons. In addition, you still just pissed the money into machining a 305 turd block down the toilet.
Even I used to think it was cool to have a small motor that got decent gas milage, and ripped asphault. My first car was a 4-dr '65 Merc. Comet. It came with the "High-Po" 289 (solid cam and 4bbl Holley). It put out a whopping 225hp. And that was before the BHP thing. That was Gross HP.
Gross HP is less than Net hp, gross hp is measured with no accessories, optimize intake and exhaust tracts. Your comet probably put out more like 180 hp. BTW, 346 cubic inch LS6s are out there putting out 400 net hp and making close to 30 mpg
But actually, it got pretty good MPG, and I could blow away anything that was newer and high-po back then, (this was in '87) from a Monte SS, a Z28, a Mustang GT, and even a Trans Am. Now some of these were also late 70's early 80's cars--SO NO FLAMES, OK? That's all high schoolers could afford.
Everyone would ask me "What's under the hood? a 460?"
It would take a high schooler to confuse a 289 with a 460
I would tell everyone that it was a 289, but nobody would believe me. So after a while I started telling people it was a 460, just to shut them up. Then they believed me.
I don't think it's a bad choice for a virgin engine builder. You wouldn't suggest a 550hp 383 for a guy who's building his first engine, would you? That's like telling me to go fight Mike Tyson.
If someone were to ask me what I would do if they were gonna build that engine, I would tell them I would use the stock heads. I'd clean them up, pocket port them, and throw 'em on.
And youd have one seriously dissapointed engine builder because that would REALLY be a dog
The biggest valves you can use is 1.94/1.5". But then when I build the 383(not "if", but when), I could buy new heads, and not have wasted money on heads with valves that are too small for a 383.
OR, you could start off with the 350 or 383 in the first place and spend the same cash or less and make more power!
But other than that.....I say go for it.
AJ
Ya see RB83L69, it's like this......
I can kinda understand were some of these thoughts are coming from. One thing you gotta remember (actually 2 things) is........
1. Cost of gas. It's going up (on average) every year. Some people are using their cars as commuter cars. They want the best highway milage they can get, but still want a little more performance over stock. Same reason you can't buy any big block new cars anymore.
Um, saying a big block vs a small block is analagous to a 350 vs a 334 is WAY out there man. When the displacement is so close in size (15 friggin cubic inches!) youll see NO difference in fuel economy. Especially when you consider the ways youd have to build either motor to create the same power. The 334 loses on all counts, you could easily build a 25 mpg 350 putting out upwards of 350 hp. That would be a huge stretch with a 334, the bore simply isnt large enough to support any decent heads for that long stroke.
2. When the person gets enough money (translation-Need for speed!!!! ) to get a 350 block, all they gotta do is buy new pistons (not including rings, bearings, etc.) right? Every other part that you would use to build a 334 are the same parts they use to build a 383.
Im no expert on this, but youd probably have to rebalance the whole rotating assembly to accomodate for the heavier pistons. In addition, you still just pissed the money into machining a 305 turd block down the toilet.
Even I used to think it was cool to have a small motor that got decent gas milage, and ripped asphault. My first car was a 4-dr '65 Merc. Comet. It came with the "High-Po" 289 (solid cam and 4bbl Holley). It put out a whopping 225hp. And that was before the BHP thing. That was Gross HP.
Gross HP is less than Net hp, gross hp is measured with no accessories, optimize intake and exhaust tracts. Your comet probably put out more like 180 hp. BTW, 346 cubic inch LS6s are out there putting out 400 net hp and making close to 30 mpg
But actually, it got pretty good MPG, and I could blow away anything that was newer and high-po back then, (this was in '87) from a Monte SS, a Z28, a Mustang GT, and even a Trans Am. Now some of these were also late 70's early 80's cars--SO NO FLAMES, OK? That's all high schoolers could afford.
Everyone would ask me "What's under the hood? a 460?"
It would take a high schooler to confuse a 289 with a 460
I would tell everyone that it was a 289, but nobody would believe me. So after a while I started telling people it was a 460, just to shut them up. Then they believed me.
I don't think it's a bad choice for a virgin engine builder. You wouldn't suggest a 550hp 383 for a guy who's building his first engine, would you? That's like telling me to go fight Mike Tyson.
If someone were to ask me what I would do if they were gonna build that engine, I would tell them I would use the stock heads. I'd clean them up, pocket port them, and throw 'em on.
And youd have one seriously dissapointed engine builder because that would REALLY be a dog
The biggest valves you can use is 1.94/1.5". But then when I build the 383(not "if", but when), I could buy new heads, and not have wasted money on heads with valves that are too small for a 383.
OR, you could start off with the 350 or 383 in the first place and spend the same cash or less and make more power!
But other than that.....I say go for it.
AJ
BTW aj, so as to prove im not biased, I run a 305 .030 over (that makes a 310) with a big *** cam, h.o. heads that are ported to all hell, a single plane, headers, all that noise and its down right slower than ****
build a 350, unless you get the stuff near free like i did
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#8
Supreme Member
Joined: Apr 2001
Posts: 4,969
Likes: 0
From: USA
Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
Um, saying a big block vs a small block is analagous to a 350 vs a 334 is WAY out there man. When the displacement is so close in size (15 friggin cubic inches!) youll see NO difference in fuel economy. Especially when you consider the ways youd have to build either motor to create the same power. The 334 loses on all counts, you could easily build a 25 mpg 350 putting out upwards of 350 hp. That would be a huge stretch with a 334, the bore simply isnt large enough to support any decent heads for that long stroke.
Obviously you missed my statement here.
"They want the best highway milage they can get"
They can get!!!!!!! And the big block referrence was only used for MPG, not power. Duh.....
And I was reffering to the MPG diff between a 334 and a 383, not to a 350.
Im no expert on this, but youd probably have to rebalance the whole rotating assembly to accomodate for the heavier pistons. In addition, you still just pissed the money into machining a 305 turd block down the toilet.
"(not including rings, bearings, etc.)" I guess I should have put labor to. Those are things you have to figure into a rebuild, modified or not.
Gross HP is less than Net hp, gross hp is measured with no accessories, optimize intake and exhaust tracts. Your comet probably put out more like 180 hp. BTW, 346 cubic inch LS6s are out there putting out 400 net hp and making close to 30 mpg
I pointed it out because that was the only rating they used back then......and I didn't feel like doing the math to figure out the Net HP. I know that it's less than if you use the BHP method as opposed to HP.
I guess the other obvious point that you both missed is that I agree that a 350 is the better way to go!!!!!!!! That's why I said this.........."Even I used to think it was cool to have a small motor that got decent gas milage, and ripped asphault."
I was simply trying to explain the "THINKING" that RB was questioning. That's all.
Never did I say that it was the better way to go!!!!!! But if that's what the person wants to do......then let them.
And don't critisize. After all, some people are just looking to do something that everyone else doesn't. Why tell them they're being stupid for doing that? He never said he has a limited budget, did he? No.
Then just help him by answering the questions he's asking.
AJ
#9
Supreme Member
Joined: Apr 2001
Posts: 4,969
Likes: 0
From: USA
Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
BTW, RB
You made a few good points that I totally agree with......like I said, you must have taken my post as an argument. But it wasn't. Just an explaination of how some think......that's all.
Oh, and your referrence to the Pinto, that's all personal opinion. If someone wants to put a $4000 paint job on one, then what's wrong with that?
You didn't buy your car, or do things to it to impress others, did you? You did it because it's your opinion that it's worth it.
Just remember that the guy with the Pinto is saying the same thing about Camaros.
AJ
You made a few good points that I totally agree with......like I said, you must have taken my post as an argument. But it wasn't. Just an explaination of how some think......that's all.
Oh, and your referrence to the Pinto, that's all personal opinion. If someone wants to put a $4000 paint job on one, then what's wrong with that?
You didn't buy your car, or do things to it to impress others, did you? You did it because it's your opinion that it's worth it.
Just remember that the guy with the Pinto is saying the same thing about Camaros.
AJ
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