i think its 450 at the crank with the rousch set up, so i would expect atleast 350-370 at the wheels.
maybe b/w that and the 22's that would explain the low HP numbers.
im running the non-intercooled roush setup which claims a 112 hp increase where the intercooled kit is like 140 or so.
stock i believe these trucks tend to put down 230-240 or so hp at the wheels which is a whopping 20% drivetrain loss in hp. now you add the 112 to the stock 300 and u get 412 at the crank. take off your 20% drivetrain loss and you get around 330 hp at the wheels. this is a bit higher than my 308 but maybe the factors i mentioned can explain for that...
The cold hard truth is that you are driving a truck. Plain and simple.
RWHP is RWHP. It is measured from 3rd gear because that is the 1:1 ratio on our tranny. Our tranny/converter combo soaks A LOT of HP, so change it or deal with it.
You spent all that $$ to supercharge your truck for a high 14 second time slip. That's Honda Civic territory. One can argue HP numbers and wheel sizes all day, but in the end it's what it ACTUALLY runs which matters.
I don't drive my Mustang to the track, but it drives down the 1320 the same as it drives down the street, meaning I don't change the wheel/tire combo @ the track to get a better run.
You want to go fast, get a car or dump a ton of $$ into it like Rafa and lose a LOT of comforts that these trucks have.
Unless you spend the cash, you won't go fast. It takes a logarithmically higher amount of funds to make these trucks go fast than it does a car. It all boils down to power-to-weight, and to a lesser degree aerodynamics.
The cold hard truth is that you are driving a truck. Plain and simple.
RWHP is RWHP. It is measured from 3rd gear because that is the 1:1 ratio on our tranny. Our tranny/converter combo soaks A LOT of HP, so change it or deal with it.
You spent all that $$ to supercharge your truck for a high 14 second time slip. That's Honda Civic territory. One can argue HP numbers and wheel sizes all day, but in the end it's what it ACTUALLY runs which matters.
this is true. i know its a truck and not expecting miracles. and i know im not all that much faster than alot of ricers, buts thats whats cool, anybody can take a dumb little honda and go fast, but when they get beat by a truck thats nearly 2000 lbs heavier, i think the cool factor goes up.
and our trannys are what pisses me off, the lightnings would lose a mere 10% with the 4r100's and those things were tough as hell. i dont understand why ford couldnt come up with a better tranny than these 4r75's. people complain about how underpowered these trucks are compared to the competition and i think the tranny's are the biggest culprit.
but all things being equal, alot of cars were running slower than they should that night because of the weather and track elevation. i was watching a neon srt-4 that should run no worse than a 14.0 pull 14.8's with a very best of 14.4. also saw a chevy cobalt ss which are supposed to run mid 14's run consistent 15.5's many mustang gt's were running 15's and 16's, and i could go on...
...but all things being equal, alot of cars were running slower than they should that night because of the weather and track elevation. i was watching a neon srt-4 that should run no worse than a 14.0 pull 14.8's with a very best of 14.4. also saw a chevy cobalt ss which are supposed to run mid 14's run consistent 15.5's many mustang gt's were running 15's and 16's, and i could go on...
The weather and altitude do have an impact on these things, but judging it's overall effect on those cars mentioned above might not be a good reference. I'm assuming those cars were all sticks. I think the inconsistencies were driven more by the driver than the weather. Just my take.....
I'm not crazy about the tranny in our trucks too. I WISH we could have the 6spd from the 09, but I love my truck as it sits and I especially love the color. Aside from the 6spd, the 09 refresh doesn't do enough for me to get one.
That's pretty respectable. I run pretty close to 15 flat and I'm at 7000' DA, which puts me right around 14.5ish consistently. You're pretty close in performance and weight than I am and I have the exact same blower, but with 3.73 gears.
Next time you are at the track, try avoiding the wet box and the burn. I noticed that on the video. It may be giving you a sloppy 60' time if you are finding traction to be a problem.
Your truck should have been knocking on the door of 14's... My n/a truck would run faster then that on hotter humid days... Hell i think I ran a 15.2 bone stock.
I'm not crazy about the tranny in our trucks too. I WISH we could have the 6spd from the 09, but I love my truck as it sits and I especially love the color. Aside from the 6spd, the 09 refresh doesn't do enough for me to get one.
my thoughts exactly
Quote:
Originally Posted by FATHERFORD
Something was wrong that night...
Your truck should have been knocking on the door of 14's... My n/a truck would run faster then that on hotter humid days... Hell i think I ran a 15.2 bone stock.
i know... i even tried richening the A/F on the xcal2 thinking that it may have some benefit with the headers and all, but it didnt make any difference at all. we'll have to see what kind of a difference new wheels/tires will make... I never went to the track stock, but i did make some gtech runs with the stock motor, 22's and stock 3.55 gears, and i was well in the 16's
Quote:
Originally Posted by ZeroDormancy
intercooler...
i wish the i/c intercooler upgrade for the roush wasnt friggin $2,000+ i wonder how feasible it would be to retrofit some kind of an intercooler into my setup
Quote:
Originally Posted by Patman03SprCrw
getting any wheel hop issues with the flip kit?
no none at all. after my rear yoke shattered a few yrs ago, i beefed up the area around the axle to suspension area, to get some trction bar like results, and it really helped any hop and looseness i had back there.
i was getting low 2.3's to high 2.2's for the most part. i had my rear tire pressure down to about 25 psi for most of the runs, but i let more out for the last run and seemed to hook up pretty well, but only launched at like 1200 rpms or so. i think i got a 2.24 on that run but ill have to find that timeslip to be sure. a 2.24 isnt too awful bad, but i can definitely feel the truck bog down for the first 30' or so, im hoping because of the big heavy wheels.
im probably going back in the next few weeks. i think i might throw on my stock wheels and tires for a few runs an just do crazy burnouts to heat them up and see how well they hook up. with any luck ill see a difference...
i went back to the track last night with my stock wheels and tires. traction was definitely an issue, i couldnt launch at all or even mash the pedal at green even after doing crazy burnouts. I was able to run a best of 14.53 at 96.0 mph though. the temp was also about 10 degrees cooler than last time, but still with near 100% humidity. my 60' times really didnt improve, but i was definitly quicker.
i can see with some better tires on some 17's or 18's and maybe even a little cooler temps, i could be close to a 14 flat...
Truck looks great, looks like you have a good time and thats all that matter. It's fast enough to take out some of the 4cyl lightly modded imports, and thats always good.
One question though, were you heating your stock tires before each run?
I would avoid the water box, and heating them up, and just roll right to staging. You lose traction with warm stock rubber.
__________________
2005 F150 SC FX4- Roushed My F150 in Action
2003 Chevy S10 LS 4.3L
when you have the stockers on at the track you cant romp on it you have to roll in to the throttle I dont even stall it up, but every truck is not the same still good runs tho
when you have the stockers on at the track you cant romp on it you have to roll in to the throttle I dont even stall it up, but every truck is not the same still good runs tho
You have the powertrain setup I want.... Awesome combo man.
Ever thought about Methanol Injection?
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company
![Smok][n is offline](http://www.f150online.com/forums/images/statusicon/user_offline.gif)
![Send a message via MSN to Smok][n](http://www.f150online.com/forums/images/misc/im_msn.gif)
Linear Mode
