Best way to come up with 350 hp 400 tq?
Professional
Joined: Jan 2008
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RE: Best way to come up with 350 hp 400 tq?
ORIGINAL: IndyRamMan
no offence but it sounds like your just throwing words out there that you have heard used in the context of go-fast before.
no offence but it sounds like your just throwing words out there that you have heard used in the context of go-fast before.
Come on, man! I'm talking about performance mods that work. I'm not just tossing out smoke and mirrors; these methods I'm quoting have been done by people with way more experience than what I've got - and have tons of money to burn to boot.
I'm sorry, but there's no other way to make any real horsepower than to yank the motor and do the work. And that takes time - and money.
These things don't go fast on horsepower. They go fast on money.
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RE: Best way to come up with 350 hp 400 tq?
My o my... This is a controvercial subject.
All I know is that the 318, and 360 motors that these trucks have are just plain good motors.
When it comes to a smallblock that can take abuse, produce power, and run reliably, these motors are up to the task.
To make 350 Hp and 400ft./lbs. of torque is easy. You just need to pull the motor and start massaging pretty much everything inside of it. That means from the top down, everything will most certainly be upgraded or at least re-worked. And don't forget the windage tray!
That is the best way to do it. Reason being is that practically everything will be rebuilt. It doesn't get better than that. Just don't forget to beef up the drivetrain and brakes if you're going to build the motor to the point where everything behind it will be pushed to it's breaking point.
Although, the fastest way to do it would be to hook the truck up with nos for the engine and nos for the driver to use as laughing gas when you blow the motor and are getting towed home.
Step by step instructions on how to get these smallblocks to scream at around 400HP can be found right here... http://www.moparmusclemagazine.com/t...ild/index.html
This is a good article to read up on, but in all good sense of reality, Who came up with this thread? I think it's very unlikely that someone is going to ask how to build a motor up and then actually do it if that person doesn't even know what to use and how to build it up in the first place. Just my two cents.
All I know is that the 318, and 360 motors that these trucks have are just plain good motors.
When it comes to a smallblock that can take abuse, produce power, and run reliably, these motors are up to the task.
To make 350 Hp and 400ft./lbs. of torque is easy. You just need to pull the motor and start massaging pretty much everything inside of it. That means from the top down, everything will most certainly be upgraded or at least re-worked. And don't forget the windage tray!
That is the best way to do it. Reason being is that practically everything will be rebuilt. It doesn't get better than that. Just don't forget to beef up the drivetrain and brakes if you're going to build the motor to the point where everything behind it will be pushed to it's breaking point.
Although, the fastest way to do it would be to hook the truck up with nos for the engine and nos for the driver to use as laughing gas when you blow the motor and are getting towed home.
Step by step instructions on how to get these smallblocks to scream at around 400HP can be found right here... http://www.moparmusclemagazine.com/t...ild/index.html
This is a good article to read up on, but in all good sense of reality, Who came up with this thread? I think it's very unlikely that someone is going to ask how to build a motor up and then actually do it if that person doesn't even know what to use and how to build it up in the first place. Just my two cents.
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Joined: Feb 2008
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From: Naples Fl
RE: Best way to come up with 350 hp 400 tq?
ORIGINAL: IndyRamMan
Not totaly correct. There is no replacement for displacement as the old addage goes, but doesnt necissarly mean more power. 281 fords make more power than 400 chevys of the smog erra. Its all about how its built. Yea a big bore/short stroke may not be ideal for a daily driver in a heavy vehicle, if your racing though, your going to want that quick rever on your side. v10 would be interesting if it had some more availability for an aftermarket. Yes you are right the STOCK motor shouldnt be reved past 5200, but thats namely due to the pushrods. Theres plenty of us out there that are running to 7000 without having gone with an overbore lifter, which still wouldnt change the angle. I shift at 5750 but I have gone as high as 6350ish, no problems. Mixing heads in your equasion for low end power should be left out. Always more power the better the flow of the heads, obviously you dont want to choke them with poor intakes or exhaust, but you will always make more power. Like you say lower torque is very helpful to get off the line quick, but a square engine would be my preferance (which the 408 is just about, 4.030/4)
Not totaly correct. There is no replacement for displacement as the old addage goes, but doesnt necissarly mean more power. 281 fords make more power than 400 chevys of the smog erra. Its all about how its built. Yea a big bore/short stroke may not be ideal for a daily driver in a heavy vehicle, if your racing though, your going to want that quick rever on your side. v10 would be interesting if it had some more availability for an aftermarket. Yes you are right the STOCK motor shouldnt be reved past 5200, but thats namely due to the pushrods. Theres plenty of us out there that are running to 7000 without having gone with an overbore lifter, which still wouldnt change the angle. I shift at 5750 but I have gone as high as 6350ish, no problems. Mixing heads in your equasion for low end power should be left out. Always more power the better the flow of the heads, obviously you dont want to choke them with poor intakes or exhaust, but you will always make more power. Like you say lower torque is very helpful to get off the line quick, but a square engine would be my preferance (which the 408 is just about, 4.030/4)
I was told the rpm issue with the magnum v8 was due to the heavy lifter and the odd angle of the lifter bore. I have seen a few busted magnum blocks where higher lift cams have been put in them. They also had hardened pushrods and roller rockers, not sure why they still did it in that case?
You can get all sorts of stocked and custom pistons for the v10's as well as "H beam" rods, the only parts where there is no aftermarket alternative is the heads and intake, but both of those can be owner modified for greater performance. Gen 1 Viper heads, as well as intake can be used with modifications, but I'm still not convinced theres any great performance benefit from it other then the 80 lb or so weight savings and ability to run the 1 pointhigher compression on pump gas. Thats up to the builder if thats worth the hassle and cost.
I already have a V10 project in the plans after my Ram is done. A 8.3/automatic trans swap into a 2003/04 RCSB 2wd Dakota sport. It helps that I work at a salvage yard
RE: Best way to come up with 350 hp 400 tq?
ORIGINAL: Slomojo01
I think it's very unlikely that someone is going to ask how to build a motor up and then actually do it if that person doesn't even know what to use and how to build it up in the first place. Just my two cents.
I think it's very unlikely that someone is going to ask how to build a motor up and then actually do it if that person doesn't even know what to use and how to build it up in the first place. Just my two cents.
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Joined: Jun 2004
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From: Ft Campbell, KY/TN
RE: Best way to come up with 350 hp 400 tq?
if bigger bore, shorter stroke isnt the answer then why is the most popular aftermarket chevroletcrate motora 383 STROKER? what about my 406/408 guys? what about my 540 guys? my 672s?
makes revving easier? what is this nonsense? geta life, sir. if you havent seen a street big block with 700+ hp that revs past 7000 rpm with ease, you will obviously say what you've just said.
destroking a motor is cool in its own right, but giving up cubes is looked down upon. the ONLY THING de-stroking a motor does, is move the powerband up. it doesnt mean its going to be faster or this and that.
ya just gotta laugh at the old wives tales...
PS: its a ford 302. you are comparing a car+motor vs a car+motor. take that 302 out of the mustang and put in a mild small block with a bigger stoke, same camand watch it go.
makes revving easier? what is this nonsense? geta life, sir. if you havent seen a street big block with 700+ hp that revs past 7000 rpm with ease, you will obviously say what you've just said.
destroking a motor is cool in its own right, but giving up cubes is looked down upon. the ONLY THING de-stroking a motor does, is move the powerband up. it doesnt mean its going to be faster or this and that.
ya just gotta laugh at the old wives tales...
PS: its a ford 302. you are comparing a car+motor vs a car+motor. take that 302 out of the mustang and put in a mild small block with a bigger stoke, same camand watch it go.
OK, you got me on the 302, but its been a while since i have been talking about one of the best stock NA engines built (Turbo 3.6SFI being the best stock motor)...and I am a chevy guy.
However, the most popular engine of chevy enthusiasts being the 383 is correct. But Strokers are known more for their TORQUE, than their HP.
And you can't spin 7-8000 RPMs on a stroker without a FORGED ROTATING ASSEMBLY and Aluminum rods while you're in there.
A 377 can spin 8000 easily with forged pistons, crank and alum connecting rods.
Lookup a 377 race engine and tell me you aren't in love. Oh, and your RPM range doesn't make your car faster. Because the RPMs are converted by your tranny, through something called a driveshaft,to your rearend. In your rearend there are gears and axles that spin in relation to your driveshaft. They then transfer that spin to the wheels which are touching the pavement. The faster those wheels spin...the faster you go!!! I had someone who has a PHD explain that one to me because it just didn't make sense...ahem sarcasm...ahem.
One last thing...700HP on a street big block does not spin 7000 with "ease". There is no way a NA STREET big block can pull 700 HP just on motor. Hot rod tried to build a bowtie with over 700 cubes and it only got about 540 HP. hey couldn't fab an intake good enough to match the setup. So its not EASY. If you have the cubes...you still need to match it tothe engine.
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Joined: Jan 2008
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RE: Best way to come up with 350 hp 400 tq?
ORIGINAL: CPTAFW163
OK, you got me on the 302, but its been a while since i have been talking about one of the best stock NA engines built (Turbo 3.6SFI being the best stock motor)...and I am a chevy guy.
However, the most popular engine of chevy enthusiasts being the 383 is correct. But Strokers are known more for their TORQUE, than their HP.
And you can't spin 7-8000 RPMs on a stroker without a FORGED ROTATING ASSEMBLY and Aluminum rods while you're in there.
A 377 can spin 8000 easily with forged pistons, crank and alum connecting rods.
Lookup a 377 race engine and tell me you aren't in love. Oh, and your RPM range doesn't make your car faster. Because the RPMs are converted by your tranny, through something called a driveshaft,to your rearend. In your rearend there are gears and axles that spin in relation to your driveshaft. They then transfer that spin to the wheels which are touching the pavement. The faster those wheels spin...the faster you go!!! I had someone who has a PHD explain that one to me because it just didn't make sense...ahem sarcasm...ahem.
One last thing...700HP on a street big block does not spin 7000 with "ease". There is no way a NA STREET big block can pull 700 HP just on motor. Hot rod tried to build a bowtie with over 700 cubes and it only got about 540 HP. hey couldn't fab an intake good enough to match the setup. So its not EASY. If you have the cubes...you still need to match it tothe engine.
if bigger bore, shorter stroke isnt the answer then why is the most popular aftermarket chevroletcrate motora 383 STROKER? what about my 406/408 guys? what about my 540 guys? my 672s?
makes revving easier? what is this nonsense? geta life, sir. if you havent seen a street big block with 700+ hp that revs past 7000 rpm with ease, you will obviously say what you've just said.
destroking a motor is cool in its own right, but giving up cubes is looked down upon. the ONLY THING de-stroking a motor does, is move the powerband up. it doesnt mean its going to be faster or this and that.
ya just gotta laugh at the old wives tales...
PS: its a ford 302. you are comparing a car+motor vs a car+motor. take that 302 out of the mustang and put in a mild small block with a bigger stoke, same camand watch it go.
makes revving easier? what is this nonsense? geta life, sir. if you havent seen a street big block with 700+ hp that revs past 7000 rpm with ease, you will obviously say what you've just said.
destroking a motor is cool in its own right, but giving up cubes is looked down upon. the ONLY THING de-stroking a motor does, is move the powerband up. it doesnt mean its going to be faster or this and that.
ya just gotta laugh at the old wives tales...
PS: its a ford 302. you are comparing a car+motor vs a car+motor. take that 302 out of the mustang and put in a mild small block with a bigger stoke, same camand watch it go.
OK, you got me on the 302, but its been a while since i have been talking about one of the best stock NA engines built (Turbo 3.6SFI being the best stock motor)...and I am a chevy guy.
However, the most popular engine of chevy enthusiasts being the 383 is correct. But Strokers are known more for their TORQUE, than their HP.
And you can't spin 7-8000 RPMs on a stroker without a FORGED ROTATING ASSEMBLY and Aluminum rods while you're in there.
A 377 can spin 8000 easily with forged pistons, crank and alum connecting rods.
Lookup a 377 race engine and tell me you aren't in love. Oh, and your RPM range doesn't make your car faster. Because the RPMs are converted by your tranny, through something called a driveshaft,to your rearend. In your rearend there are gears and axles that spin in relation to your driveshaft. They then transfer that spin to the wheels which are touching the pavement. The faster those wheels spin...the faster you go!!! I had someone who has a PHD explain that one to me because it just didn't make sense...ahem sarcasm...ahem.
One last thing...700HP on a street big block does not spin 7000 with "ease". There is no way a NA STREET big block can pull 700 HP just on motor. Hot rod tried to build a bowtie with over 700 cubes and it only got about 540 HP. hey couldn't fab an intake good enough to match the setup. So its not EASY. If you have the cubes...you still need to match it tothe engine.
. i know EXACTLY what a 377 is, and i am very familiar with them.the idea that a shorter stroke motor revs easier is really a partial myth. its true on a stock setup, but with stronger parts, you can have a stroker motor spinning with ease.what is this rpm range and driveshaft talk? please spare me. ive been around the block a FEW times...
lol. as far as the whole naturally aspirated big block thing u said...take a step into my world. www.chevelles.comim the little guytherewith onlya 400 hp 327.
magazines are silly.
you'll see more 700+hp street big blocks with dyno sheetsthan you'll know what to do with at team chevelle.
