I am really considering keeping my truck after college now. Ill be "unlifting" and lowering it 2/3. So after graduation ill be getting the trans rebuilt (and beefed up a little) and then ill start working on the motor, headers, exhaust, higher ratio rockers or maybe a cam, v8 throttle body, 4.56 gears. and maybe like a 50-75 shot of the juice.... will i be in the real low 14's with that? What about if i found a blower for cheap instead of the nitrous, how hard is it to adapt to the 3.9 and would that plus the other things get me where i want to be
fun daily low 14's/high 13's out of a rc 3.9
vartz04
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2,332 Posts
Umm...your stupid. Theres no way your STOCK 3.9 made that much power to the wheels unless they dyno was screwed up.
ANd a stock 3.9 is not going to run a 15 flat in a dakota.
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2,524 Posts
who runs slower than a 15??
I have seen countless low 15 sec runs from mildly modified trucks without D/R's
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4,635 Posts
I ran a 17.5 in the quarter mile stock. 1998 V6 5 spd, 3.21 gears. and that was traction limited. couldn't launch very hard in 1st, and had to be gentle with the power shift into 2nd or it would spin then too.
if your truck made 192 to the wheels at your school dyno, then my truck will put down 550 to the wheels on that engine dyno. (made 505 at the crank)
some dynos are very stingy, others are more liberal in their numbers. I'm guessing that your school isn't overly concerned with their dyno's accuracy, and don't care if it reads high.
if your truck made 192 to the wheels at your school dyno, then my truck will put down 550 to the wheels on that engine dyno. (made 505 at the crank)
some dynos are very stingy, others are more liberal in their numbers. I'm guessing that your school isn't overly concerned with their dyno's accuracy, and don't care if it reads high.
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4,635 Posts
when you did your fake 1/4 mile run on the dyno, was the dyno programmed to add resistance with speed based on the drag coefficient of your truck, as well as based on the weight of the truck? or does it just have a "1/4 mile mode...go!"
if you want an accurate representation of what your truck will do in a 1/4 mile is if you program in your drag numbers, vehicle weight, tire size, etc.
that way the dyno knows how much resistance to provide.
if you want an accurate representation of what your truck will do in a 1/4 mile is if you program in your drag numbers, vehicle weight, tire size, etc.
that way the dyno knows how much resistance to provide.
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2,332 Posts
It doesnt matter..because if it said he was making that amount of power, it wasnt calibrated anyways.
Ive ran a mustang dyno. It does add resistance to the rollers to simulate the wieght you put into it. It had a electromaganetic brake on it. It does not add in wind resistance though. I ran 10mph quicker in the 1/4 mile on the dyno.
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2,524 Posts
:jester::jester: thats funny. hey i wanna see the dyno results for this guy.
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39 Posts
it was calabrated. if I wasn't 1000 miles from home at school I would post the dyno numbers but I dont have them with me at school. it was what the hp would be at sea level. the dyno was a mustang in ground dyno that is kept calabrated because the teacher puts race cars on it that he puts together and tunes befor it hits the track. the dyno was programmed to add resistance with speed based on the drag coefficient of my truck, as well as based on the weight of the truck.
What IS the drag coefficient on a Dakota?
I've gone to web calculators to try and get an idea of how much power it would take to go like 200 mph - but it wants frontal area and drag coefficient numbers. I made some up for the calculations, but if anybody has ACTUAL numbers, I'd love to see them.
I've gone to web calculators to try and get an idea of how much power it would take to go like 200 mph - but it wants frontal area and drag coefficient numbers. I made some up for the calculations, but if anybody has ACTUAL numbers, I'd love to see them.
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39 Posts
im not shure what they are because the dyno has it programed in the computer and baced on the weight and somthing else it will add a number based on a real 1/4 mile run to compensate for the lack of wind. it is supose to be good to a 1/10 of a second of a real run down a track according to the people from mustang that was why the teacher got the setup for the school.
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39 Posts
you can think what ever you like i don't care!!! but when I can get to the track to get some track numbers i'll find out if it was wrong but until then that is wat I know. but the hp numbers well that might be a diffrent story cuse that is the only dyno around that I know of.:nana:
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2,524 Posts
please go to the track, and get video's. il bet you it runs a 17 flat
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798 Posts
i know for a fact that those dyno numbers are wrong. the 3.9 only makes 175 hp at the crank from the factory and with an auto, it only makes 125 at the wheels. theres a guy in my club that had more mods to his 3.9 and he had a 5 speed and he was making 167 hp before his heads and cam swap.
there are four things that are the most lied about on automotive internet forums. horsepower, 1/4 mile times, gas mileage, and dick size.
there are four things that are the most lied about on automotive internet forums. horsepower, 1/4 mile times, gas mileage, and dick size.
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1,075 Posts
this is what hes trying to make up for:funny:
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1,075 Posts
trust me man these guys here know a lot of shit, take it in stride the dyno was wrong.
Hmmm, Let's see now.
HP? - Mine is good.
1/4 mile times? - mine are low.
gas mileage? - mine is poor.
dick size? - my pussy hurts? :huh:
:funny:
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2,524 Posts
hahahaha.
on a side note, i like the wheels you photoshoped in your sig, how about getting them for real:mullet:
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