i have to do some deep digging into my back up disks for my dyno roller charts from last year. i will say what there was in true roller talk and what ford stated as fly wheel a big major difference. they have so much of big torque reduction programing in the pcm codeing that the loose is amost 34 % to on the ground. to help save the trans and driveline .
hp. "dead stock with only 4k on the clock" was on the ground hp at 268.? something with a regain to 315. after about 40 pulls and 30 hours computer time reseting the tunes for my sct excalibrater 2 . that are no good any more since my reflash. and plainly have not had the time to sit and play on the rollers again.
stay tight i'll get them. and as i said you will be shocked at the %age in the drive train loose in the stock program
and for you diesel lovers this ex c.p.o. e7 loves to bust brass if you know what i mean and has been
Actually charlie no I won't be suprised at the lose, nor am I suprised at Ford turning it down so the torque doesn't kill the drivetrain, they don't want warrenty issues. GM had that issue with the duramax and allison trans, they way it was programed originally it would shift and drop right down to peak torque when it hit the next gear.......booooomm goes a tranny real fast.
ihope this loads up as this is the dyno chart for mine dead stock,still very tight with only 4k. on a motor that seems to need 7 to 8k to seat in all the way
to start we have a a 05 f250 4x4 with a auto trans, 4:10 gears and 265/70/17 bfg all terrain tires at 70 pounds .a 415 cubic inch motor , fly wheel rated at 362 horse power at 4,750 rpm, with a torque rateing of 457 foot pounds at 3,250 rpm.
we made 3 pulls that day . very bad weather 65 degs with super high humidity around 80% and heavy rain. not the best of days . but when you rent dyno time. it's rain or shine.show or no show. your paying for it. tires were wet so they slipped trans had to be held back into 3rd gear to get the rpm factor, because of the road speed stop at 93 mph, not letting it run out properly. many bad factors against any chance of good pulls
pull one was found at 252.1hp and 299.6 torque
pull two 265.9 hp and 304.3 foot pounds
pull three gave us 262.8 and 316.3 foot pounds
so as can be seen ford does reduce the power in the programing big time and there is lots of lost power to regain before you start to see anything of a gain.
I'd say 65 degrees and high humidity is perfect weather for a dyno pull.That kind of air will let the engine do it's thing. Better than 90 degrees and low humidity. Was this a portable dyno ?
no it's a fixed dynojet 3500 hp model. used by a nascar team. as to the weather what i mean by bad was the rain. coming down like cats and dogs type, it made it very hard to stay tight on the rollers as pull one shows. it had lots of slip.
since then we have tried a lot of bolt on toys and found most of them worth less in the amounts of power added. the sct excalibrater 2 with custom tuneing did the most with a 25hp gain
by bolt ons i mean a afe cold air kit. tested with the filter on and with out 3 hp gain. ford motor sport headers , 12hp about 3500 rpm, gibson headers gave 17 hp, free flowing exhaust . 4 hp again above 3000, again the most of what we got back was in the tuneing of the pcm and removeing the torque limiting program. i also regeared to 4:56's that just helped get the torque to the ground faster. and the pick up of the truck.
i don't think in reality any one could get more then 315 on the ground with out a blower out of the stock 3 valve motor. there are no big parts out or made for it. sure one could blue print the motor , add a set of forged pistons for a 5.4 and do a super balance job. but for what maybe 10hp in the real world.
we have afew v10 area members who have and have proven this motor responds to the adition of a blower, just as any gas motor. or a diesel when they are turboed,
if i had to do this again it would simply be a custom tuner , reduce the torque reduction program. and just drive it that way.
by it self the motor does what it designed for a alternet motor to tow with when the psd price is out of the persons pocket book as it was with some of us. it also shuts up the belly aching of the wifes.
Charlie I feel ANY motor can benifit from a good balance job. Any factory engine from any of the automakers has too wide of a tolerance for the balance, as I recall it's as high as 2gm, wereas on race engines we run less than 1/2gm. It might not, and probalby won't gain you much on the dyno but it will gain you a lot in how the engine runs, and longevity. Most people have this thinking that balancing an engine is just for race engines, and that is just wrong. A race HAS to be balanced to survive at 7000+rpms but if it will make a race engine survive at that rpm just think about what it would do to a engine that rarely if ever sees 5000rpms.
Something else that I bet you would be suprised at (well probably not charlie but many are) is how far out of square your engine block is, the machining process for the block is indexed off of tabs on the block in the casting process not off of the crank bore, so if you were to take the engine and have the line hone done, and then have the deck squared to that bore what you would do is basically make all the pistons reach the same point and thus equal out the compression between cylinders, and this WILL equal an improvement in both torque and hp (and is basically a major part of what is called "blue printing")
I'd say 65 degrees and high humidity is perfect weather for a dyno pull.That kind of air will let the engine do it's thing. Better than 90 degrees and low humidity. Was this a portable dyno ?
I certainly hope you are not implying that HIGH humidity is good for dyno numbers...You could not be more wrong! High humidity will rob power...however you could use corrected numbers and take the conditions out of the question.
Well, I was hoping to see 05/06 V10 and PSD torque curves by the manufacturer. I'd like to see the torque/rpm numbers for both. I think that would prove to PSD folks (or maybe to V10 folks) that at certain RPMs we've got more power to the ground.
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2005 F250 V10, CC, SB, 4x4, 4.30 axle ratio
Ace thats not even comparing apples to oranges, more like strawberries to cucumbers. I can tell you without even seeing any charts yes the V10 will put more power to the ground than a PSD at certian rpms, duh it's a gas engine vs a diesel so above 3400 rpm the V10 factory numbers will be higher because the factory calls that the redline for the PSD and using that type of comparison just makes it look like desparation to prove something. At certian rpms I can promise you the PSD will kill the V10 for the other side of the story, try looking at torque numbers below 1600 rpm and see which one is making more torque. The point is you can't compare diesel to gas in a rpm to rpm side by side comparison they make thier max power in different rpm ranges by design.
good one as thats what makes the diesel the work horse motor. low end torque and low rpm's needed to do the work.
take a semi or a small marine diesel they all work at less then 2500 rpm . while a gas eng has always worked best at over 3000. or 3500. thats why this v10 feels and runs it's best at 3000 plus it's max. torque is rating is at 3250.while the psd is what? maybe at 2000.?
ace have you ever looked at the speeds some diesels work at? i mean there are lots of big stationary motors esp in container ships that idle at 20 rpm and max out at 120 rpm. while making up to 68000 hp. others may only run at 1000 to 1200 tops
thats the really big difference in a gas ver. diesel . the diesel never sees the rpm a gas motor needs to run at to see it's torque band really start. another is the fuel oil helps lube thier top ends slowing down clyinder and ring wear.
try the web master here and get a custom tuned sct excalibrater 2. ken has the base tunes for my motor and can modifie them to yours . you can also go into their web site ,www.sctflash.com type in your zip code for a shop close to you home have a talk and let them custom tune to your own needs.
just remember one big thing tune off the t.r program the trans will not last very long . but you can pull a easy 20 plus or hp more out of the motor the rest come very hard and costly/
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