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DMSDAK
Dodge Dakota
10/20/2001
13:49:52
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 Subject: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
Guys, lastnight I went down to Bristol Dragway to the last night of the street fights and run my truck for the first time. Its a 2001 RC 4.7 3.92 peg-leg 5-speed, with an AIRAID Quick Fit System.The truck run these numbers,which are from my fastest run:
R/T: .607
60': 2.565
330: 6.882
1/8: 10.430
MPH: 69.36
1000: 13.496
1/4: 16.115
MPH: 85.88
What could be the problem? All the shifts were kept at a constant 5500 RPM's tried 5000 but ran quicker with the 5500. Made 5 runs they are in order 16.449, 16.527, 16.461, 16.231, 16.115. I think it may be the track conditions but others were running what seemed to be thier usual tiems? There wasnt to much spinning off the line either? Its got me puzzled, no missed gears all the driving seemed to be perfect. Thanks for any Info!
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1Fine5.9
Dodge Dakota
10/20/2001
16:00:32
|  RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
Shoulda bought a 5.9
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DMSDAk
Dodge Dakota
10/20/2001
16:01:14
|  RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
Guys I may have found an answer to my own question! Before I went to race I had about an 1/8 of a tank of pure 87 gasoline which is all I ever run and before I went to race it I remmebered the manual saying to put 93 in if you run it hard or tow so I stopped at a station and put some 93 in (up to the half tank mark) for the first time in its 8,000 mile life could this be the problem? Oh and those last two quickest runs were made with me solo without one of my 190 pound friends so the weight might have been a prob too.
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moparjoe20
Dodge Dakota
10/20/2001
16:25:52
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Got a '99 club cab 318,auto , 3.55 that runs 10.20's in the 1/8 with 87 octane in the tank,from everything that I've seen on this board about the 4.7's you should be running at least low 9's in the 1/8 and 14's in the 1/4 stock.
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Andy H
Dodge Dakota
10/20/2001
18:45:57
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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You should be running hell-a faster than that. I have an '01 4.7 CC auto 3.55, 2-chamber flowmaster (sounds sweet), everthing else stock,,stock air filter, etc.. My best 1/4 time was a 15.5 on 87 octane. Gas isn't gonna make that much of difference. You should be in low 15's or high 14's.
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DMSDAK
Dodge Dakota
10/21/2001
01:35:10
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
Then what do you all think is the problem? I mean I could have swore this thing would have been faster but those times I ran are just to consistant for it to be something I am doing? Im pulling out at Dead Idle of like what 600 RMP's or whatever cause the track there rolls you back out of staging if you dont hold the break. Any Ideas please?
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chevyboy
Dodge Dakota
10/21/2001
01:42:09
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
SHOULD HAVE BOUGHT A CHEVROLET
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Spyder343
Dodge Dakota
10/21/2001
04:01:22
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
Yeah, then you DEFINITELY wouldn't have to worry about it... you'd already know what the problem is!
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1Fine5.9
Dodge Dakota
10/21/2001
12:01:58
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
Chevy, hahahahahaha!!!
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Jeff
Dodge Dakota
10/21/2001
16:39:05
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
As far as gasoline goes... 87 octane gas will make more power than 91 octane gas will... the benefit of the higher octane is less chance of the dreaded PINGING. Higher octane allows for an increase in timing without the ping... lower octane, although more susceptable to pinging under extreme conditions or under increased timing, makes more power than higher octane.
Jeff
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Horbedarn
Gen I
10/21/2001
21:40:52
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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My truck isn't as fast as other people say their trucks are either. I am running at 6000 feet though. I run around 17.8. The altitude makes a big difference. Or are this times slower than they sould be?
2000, CC, SLT, 4x4, 4.7, 3.55, Auto
Borla Cat-Back, AirRaid Intake, TB Spacer, 3923's, 180 T-Stat
MTX Amped Thunderform
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Matt Barret
Dodge Dakota
10/22/2001
07:41:38
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
Your 60' times are horrable, I mean, REAL BAD !!! Thats why your times are no good. 2.56 60' is kinda like a Don Garlits burnout!!! You say "no spinning" off the line, hmmmm, almost had to be spinning for that 60' time, either that or a second gear launch. What rpm are you launching at??? Also, Bristol dragway is about 1500' above sea level !!
Matt Y2K-HEMI
'00 RC 4.7L 5spd
14.23@94.49
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Mar
Dodge Dakota
10/22/2001
08:33:33
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
Is your truck a 4x4 or 2x4. Or AWD
If not i can only say you must be shifting wrong. Start at 1500 and raise your foot of the clutch as much as posible shift at 5500 not totaly taking your foot of the gas (must be quick) After every shift just drop the clutch. If that doesnt work and your concerend get the truck dynoed and confront the dealer.
Use 89 octain for the races. 87 makes more power but if it starts detonation can cost you a lot of hp. But i dont think the fuel has anything to do with it.
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alex
Dodge Dakota
10/22/2001
09:42:56
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
Two things...
How many miles are on your truck? There's a "break-in" program in the computer that will not allow you full horespower until like 11,000 mi. I was running 16.3's stock with 7500 miles on the truck. Then at 15,000 miles (it took a while to get back to the track), all of a sudden without doing anything, I was at 15.50
The other thing..... having your 190 pound buddy in the shot-gun seat is NOT helping. Gas weighs 6 pounds per gallon, so half a tank is about 66 pounds, plus your buddy comes to 256 pounds of dead weight. Get rid of all but about 5 gallons of gas, get rid of your buddy, and take out the 50 pound spare tire and now you'll be able to launch it. You've really got to work on launching out of the hole, and work on your shifts. It's all reflexes, horsepower, and weight.
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HEATH
Dodge Dakota
10/22/2001
11:17:31
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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YOUR 60' TIMES ARE TERRIBLE!!!!!!
You should be running 2.1-2.0 60' times.
My quad cab auto 4.7 runs 2.1-2.2 consistantly.
My 98 5.2 with a stick ran 2.1s easily.
Do you have limited slip? That would make a huge difference.
Practice your launch. Get it down to 2.0 and you will be in the 14.8-15.0 range.
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Mar
Dodge Dakota
10/22/2001
14:58:33
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
THere are plenty of people here that get 14.5 you should have at least put yourself deep in the 15's.
Alex. I dont know but i think 11000mi is a little long for a break in program. Maybe 3000mi. By 11000mi your truck is in its prime.
Oh wait a dodge is only broken in at 999999999999999999999999999Mi.
HE HE.
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DMSDAK
Dodge Dakota
10/22/2001
20:07:14
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
Guys Im taking off from a dead Idle (Like 600 RPM's) I mean I have to keep one foot on the break cause it rolls on that track on through the Staging lights if I dont, then when the second yellow goes out I launch it, I actually got a .507 reaction time doing that :-), then just stay in the gas up to 5500 and shift each gear from there on out at 5500. The one thing I didnt do I guess is staying in the gas when I shift I was afraid of screwing something up but I mean hey this was my first time racing a manual tranny ever! Oh and the rear end is a 3.92 open rear and its a 2WD with 8,000 miles on it.
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alex
Dodge Dakota
10/23/2001
13:35:04
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
All I know is my truck started idling a lot lower (actually stalling out sometimes) at around 10,000 or 11,000 mi and somehow, right about that time, I picked up about .4 or .5 in the 1/4 mile. The dealer said it's a computer deal.
As far as launching on that slanted starting line, set your e-brake, put one foot on the gas, and the other on the clutch. When the lights go down, release the e-brake right as you release the clutch. Takes practice, but once you get it right, it's easy. That way you can be tach-ing up to around 1500 rpm and get some motion in them tires. The more you race, the more you learn, and the smoother everythign gets.
alex
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kerleyfries
Dodge Dakota
10/24/2001
04:17:59
|  RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
all of you are retarded. where in the hell did you get your information? e brake?? i mean come on man??? what in the hell are you thinking. GOD only gave us two arms dude!! i mean what are you going to do???, reach down and pull on the brake release right before you take off?? sounds like a master plan there chief... good GOD man.. go to driving school or something. better yet, dont even drive anymore. you just shot yourself in the foot on that one. uh duh........ thanks for your time..
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Mar
Dodge Dakota
10/24/2001
08:46:32
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
What the hell are you talking about. The Ebrake thing is a good idea as long and you can reach it.
You might be able to rig up somthing do you can disingage it easer like a rop or lever. If you could rev the engine up to 2500 and drop the clutch with out rolling at all you would get a kick ass time. I bet theres people doing it now.
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CW
Dodge Dakota
10/24/2001
09:19:25
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
If it were me I would install a line lock to prevent the truck from rolling out of the staging lanes, then you can put the button on the shifter and release it when you need to take off and you never have to move your feet or hands.
kerleyfries: You do know that the more you attack people on this board the less likely they will be to listen or even think about helping you.
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Duner
Dodge Dakota
10/24/2001
11:07:20
| Parking Brake Works Fine for That!
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Hey, they parking brake works just fine for that. When I race at Speedworld, the truck wants to creep thru the beams. I just put some tension on the parking brake and then stage. I take off like normal and as soon as I get a chance I release the brake. It's not really doing that much braking anyway. Just set it enough to keep the truck from rolling. I've run out of time in 1st before and not released it until after I was into 2nd. No big deal. I never could see any negative impact on my times regardless of when I released it at all.
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ALEX
Dodge Dakota
10/24/2001
11:32:02
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
Hey Kerley:
You're a jackass. I've got two arms, one for the e-brake lever, one for the steering wheel. You answered your own question. YES, you release the e-brake just before you relase the clutch. As soon as I launch, I sit up and move my "e-brake hand" to the steering wheel and my "other hand" to the shifter. Just in time to rip second gear. No money spent on line lock, no creeping backwards out of the beams, and no bullet holes in my foot. Maybe you should get your own ass to driving school. Maybe you should get to the track more. Maybe if you had raced on some of the scrubby, unlevel,crusty 1/8th mile outlaw tracks that I've seen, you'd know what the hell we're all talking about in this thread.
"better yet, dont even drive anymore. you just shot yourself in the foot on that one. uh duh........ thanks for your time.."
Sound familiar??
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Crux
Dodge Dakota
11/02/2001
10:48:16
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
Alex,
Ive noticed that as well. My '01 4.7 is idling lower (actually had it stall on a cold morning) havent had it on the track, but will post once i do
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alex
Dodge Dakota
11/02/2001
11:57:53
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Kinda funny how the 4.7 is so smooth, you don't even notice that it stalled. I would be sitting at a light and let the clutch out and nothing would happen. Then I'd look down and see the tach resting on 0. Derrrrr.....
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Dr.Q
Dodge Dakota
11/02/2001
12:15:55
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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I have the same set up(2001 4.7 5sp 3.92-"pegleg")
I've put some cheapo traction bars on and while my best times haven't improved. It has helped with the consistency. Cuz' when lauchin' hard this here peg leg does the bunny hop for a good 40 feet. That has stopped altogether. If you don't whant to got the traction bar route use sping clamps on you rear leaf spings. You really gotta modulate your gas during first grear, by listening for a "chirp" on lauch and on shifting the second you should get alot better times. Cuz if you pop the clutch and floor it you'll spin all through first and most of second. Practice! You gotta wonder if you can get all of them there horsies on the pavement what it'll do.
Hey Matt, do you think if I'm REAL good Santa will bring me a powertrax no-slip and a set of hoosier racing slicks? How's the TB?
Q
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alex
Dodge Dakota
11/02/2001
12:50:00
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
Doc:
A peg-leg rear is pretty much your achilles heel, there. But the traction bars should definitely help. Until that PowerTrax slides down the chimney, try airing the rear tires down to about 28psi (maybe 25 at most). This will widen the footprint by about 3/4" to a full 1" of contact. I also learned from Mr. Barrett that it helps to air UP the front tires to about 44-50 psi. Sounds scary, but much less contact patch means much less rolling resistance in the front. All kinds of tips & tricks, eh? I'm off the the season closer tomorrow at Atlanta Dragway to try out MY new traction bars. WooHoo!
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Matt Barret
Dodge Dakota
11/02/2001
14:29:41
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
hey DOC, the F&B TB is working great, it seems like Bruce has the idle bug worked out now. It idles normal 99% of the time now. This thing pulls like crazy 2500-5500, the Butt dyno feels alot of TQ/HP around 4000 rpms, its like hitting the funny gas, hee hee.
Put a set of the Hoosiers on there and you'll feel every bit of that power hit the ground, its addictive. 1.8 sec. to cover 60'from a stand still, you've got to experience that to believe the feeling, especially if its the fastest you've ever been.
The Power trax is something I've been wanting for a while, its a pretty easy "bolt in".
Air up the front tires is an old trick, but it does help. I've gone as high as 55 PSI, but you don't want to ride around to much like this.
Like Alex says, 25-30 PSI works well for the rear, anything lower will probably hurt you more than help.
Matt Y2K-HEMI
'00 RC 4.7L 5spd
14.23@94.49
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alex
Dodge Dakota
11/02/2001
14:55:13
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Message:
now, Matt..... I thought you were going for the King Kong Dana 60 with rear disks! (insert evil chuckle here)
alex
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Matt Barret
Dodge Dakota
11/02/2001
15:02:46
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Alex, that was before I called DTS and priced it out.... ha,, ha haa, I told them I did'nt pay much more than that for the whole damn truck!
Bawwaaa haa haaaaa!!!!!!
Seriously, the Dana 60 conversion is awesome, but I don't think the Trans would withstand it.
Anybody know how HotRod Mag got the Viper 6 spd to fit the 4.7L ??? They did it, but did'nt really tell how. That would be the ultimate, backed by the Dana!!
Matt
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alex
Dodge Dakota
11/02/2001
15:18:29
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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Oh. Heh. Well. Maybe that Power Trax unit will have to do, then. Yeah.
Didn't Hotchkis put a Viper 6-spd in that QuadCab they put together as the show truck for their new lowering kit? I bet the install went a lil something like this:
Step 1: remove seats, console, shifter and carpet.
Step 2: get sawz-all and start choppin'
Step 3: cry about how you just cut up your $15,000 truck to put in a $15,000 trans.
Step 4: insert said trans
Step 5: Weld floor shut, replace carpet, seats, shifter and console.
Step 6: Have a beer.
LOL
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Matt Barret
Dodge Dakota
11/02/2001
15:47:16
| RE: Slow A$$ 4.7?? WHATS THE DEAL?
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BAWAAAAAAA HAAAAAAAAA HAAAAAAAAAAAA
Exactly, except #6 should be, have a 12 pack
Matt
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