Stroker vs Regular 440 build

[HP_Cuda]

So no one wants to poke holes in my theory.

Please someone tell me why I want to build a stroker over a rpm motor.

 

[ragtopdodge]

Street car or race car?

Street car, yes, go stroker.  Torque is fun and how often are you going to be spinning your car to 6500 RPM?

W/modern light rotating assembly parts, you can get the best of both worlds and get a high RPM stroker motor.

[72cudamaan]

So no one wants to poke holes in my theory.

Please someone tell me why I want to build a stroker over a rpm motor.

 

Your theory has enough holes in it already  no need to poke more holes in it.
No seriously, a stroked motor will produce more torque by virtue of longer rods. Therefore when done properly
will put less stress on an engine. But a stroker motor will rev slower then a short stroke motor, so it won't spin
 to as high of an rpm. Your vacuum is affected by the duration of the camshaft. Some may say that a stroker motor is a waste
of money. I believe that since it doesn't cost much more to stroke a motor then it does to
do a total rebuild anyway, why not? If you decide to upgrade to a larger set of heads and/or intake, you know that the lower endis ready for it.
As to why YOU would want to build a stroker motor over a rpm motor, you still haven't really  said what it is
that you looking to get out of a motor.

[Chryco Psycho]

I tend to disagree , the stroker will rev as fast & usually faster then a stock 440 as you remove a lot of weight from the rotating mass , the power peaks sooner though  due to 2 things head flow & piston speed  this is good for street use , but with enough heads & cam there is no reason why 7000 rpm is out of the question either , stroker just seems to be the best way to optomise the engine with higher power , more CI & less rotational mass .

[HP_Cuda]

First off, I said .060 but you are right I was using slang the real bore will be to the piston which will most likely be .055. Unfortunately the guy I bought it from said it was at .030 and he only used it for 3k miles (don't think so), it mic'd out at .045 so it had a .040 bore and .005 play which makes me wonder....

Anyway, I plan to spin her to about 6500-7000rpm. As for cam, do you realize how many roller cam selections there are out there? It's not like I have a massive warehouse to choose from. I want a streetable cam and not something that sounds like its constantly trying to die. Btw, I enjoyed watching your idle jump from 800-1000rpm 

The portwork on the Stealths will bring them close to 300cfm for the flow which is required for an rpm motor. As for the VE figure you stated I'm right on the money at 850cfm carb since you stated 827cfm.

No replacement for displacement also can be said of making tractor motors. More torque and less HP. It's all in what you are trying to achieve. Heck if I wanted to burn rubber all day I wouldn't need to really build a stroker motor to do that!

Anyway, to state again so it's clear. I'm looking to build a streetable 440 which is tame for the street but would see some 1/4 mile action once in awhile. It would be nice to have a decent vacuum signal and get decent gas mileage on the freeway. Alas, its all in how much you want to push the fun pedal.

Thanks for all the input guys,
Bryan

why do you want to take the block right out to .060 over anyways ? .055 is a common piston to get and leaves you some room for block reusage/cleanup... why full port when the cam you have selected will only be .577 lift BEFORE lash setting with 1.6's and them heads still flow upward .100 lift after that... how many RPM do you plan on spinning out on the blvd  and using barry grants formula CI(440)*RPM(guessing 6500) /3456 = 827 cfm I think that carb is too small also for a decent 440 engine... for a pump gas street car cubic inches is KING 

[Bills70]

I know this is apples and oranges but I thought I would chime in!! I had a 340 stroker built and all my friends warned me not too!! as someone asked... what is your purpose? mine was daily driver!!   bad idea!! poor gas mileage! and need to use the most expensive gas at the pump! so if I had to do it again I think I would REALLY re-think the stroker!! sure it sounds nice and has that GREAT muscle car sound BUT just roll up the paycheck and drop it in!!!! and this is just a 340!!!! really think this out!!!

[PlumCraZRT]

Anyway, I plan to spin her to about 6500-7000rpm. As for cam, do you realize how many roller cam selections there are out there? It's not like I have a massive warehouse to choose from. I want a streetable cam and not something that sounds like its constantly trying to die. Btw, I enjoyed watching your idle jump from 800-1000rpm 
...
Anyway, to state again so it's clear. I'm looking to build a streetable 440 which is tame for the street but would see some 1/4 mile action once in awhile. It would be nice to have a decent vacuum signal and get decent gas mileage on the freeway. Alas, its all in how much you want to push the fun pedal.

Why do you want to spin the engine to 7000 rpm when you can make an engine that puts out more power at 4000rpm?  Is the 6000 rpm redline really ruining your life?

Sledge is running 270deg@.050" with .690" lift... dial that back to 250deg with .550" lift and you will still have a raspy 440.

Lastly, you want an engine with decent vacuum and decent gas mileage.  Do you want to quantify decent?  Sounds like you really want a de-stroked small block.

Like Sledgehammer said, good luck with whatever route you go... doesn't sound like anyone here can convince you of something you already have stuck in your head.

[high perf mopar]

and cubic inches eats up duration also

this is when my engine was a 540... how many on here can get their 440 to idle like this with a "mild baby cam"
my cam specs at this time were 269/269 @ 50 .690/.690 lift

sounds pretty tame don't it and idles about 850rpm! I dont run the idle rpm's there was just playin aroud   
Pro Systems SV1 - Pump Gas 540

hey sledge,,nice video's,,im planning on a cam change at the end of this year's car show season,,im looking for a cam like the one in your vid in the 590 lift range that will idle around what u have with good vacuum..automatic trans,3500 converter,,I WANT THAT SOUND!!!!any suggestions,,solid roller something???currently running a c.c. 555 lift 306 duration,262@50 solid lifter 106 center,,wont run worth a s$%t under 1400...ideas??thanks.

[MizzouRT]

...I'm looking to build a streetable 440 which is tame for the street but would see some 1/4 mile action once in awhile. It would be nice to have a decent vacuum signal and get decent gas mileage on the freeway...

When I hear you want to make 600 hp / 600 torque, then a stroker seems like the cheapest way to make that much power.  But displacement is a big enemy of fuel economy.  If you are running the same cam, then a 500 cubic inch stroker is pumping almost 14% more fuel/air per revolution than a 440.  If you get 12 mpg with a 440, running the same rpms should get you about 10.3 mpg with a 500 stroker.  Not a killer concern but something to factor in...

[HP_Cuda]

I guess the good question is how often do you drive the dart on the street?

As for the carb I guess I can go overkill and get the 950cfm but usually 9 times out of 10 you are just over carbing the motor. We shall see....

Call and get a custom ground cam made up! and a 850 holley doesn't flow 850 either... and using that formula and you wanting to spin it 7000 is a 900 cfm carb... some carb mfg's flow the rating different.


 I want a streetable cam and not something that sounds like its constantly trying to die. Btw, I enjoyed watching your idle jump from 800-1000rpm 
 "streetable cam is a relative term"

This is where I normally run it at 1100... hold pretty steady there now don't it...
 good luck with whatever route you go 

Stroked Pump Gas 440... SV1


runs pretty good for a 1 barrel on local 93
Dodge Dart - 9 Second Motor Only Pass(93 Pump Gas) Radial Tires

[HP_Cuda]

The Cam I have is somewhere near what you are talking about:

XR-286HR-10

286/294 duration
544/541 lift

I've been searching youtube for an idle profile but haven't been successful yet.

Thanks for all the input guys, I think I may have settled in on a motor config I will be happy with.

B

Why do you want to spin the engine to 7000 rpm when you can make an engine that puts out more power at 4000rpm?  Is the 6000 rpm redline really ruining your life?

Sledge is running 270deg@.050" with .690" lift... dial that back to 250deg with .550" lift and you will still have a raspy 440.

Lastly, you want an engine with decent vacuum and decent gas mileage.  Do you want to quantify decent?  Sounds like you really want a de-stroked small block.

Like Sledgehammer said, good luck with whatever route you go... doesn't sound like anyone here can convince you of something you already have stuck in your head.

[HP_Cuda]

Wow that's a healthy cam... I haven't found the 1.7's but I haven't looked a whole lot either. I'll check out the harlands.

this is the XR286R in my old chally with 1.7 harlands.......SOLID ROLLER.......  my dart runs fine on the street! how much do I drive it...... well. i am always messing around with it but have plans on something but I race it on local 93!

Dodge Challenger 500" N/A Pump Gas