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New best 1/4 Friday night #3148781
06/05/23 09:06 AM
06/05/23 09:06 AM
Joined: Jan 2003
Posts: 13,318
Marion, South Carolina [><]
an8sec70cuda Offline OP
I Live Here
an8sec70cuda  Offline OP
I Live Here

Joined: Jan 2003
Posts: 13,318
Marion, South Carolina [><]
Went to Darlington Friday night for test and tune. After having issues at Rockingham last month. I wanted to see if I had a decent setup to keep the front down and go faster.
My first pass off the trailer was an 8.74 @ 156.4 mph w/ a 1.35 sixty foot. A personal best 1/4 mile ET for me! The front only came up about a 8-12" and carried them out nicely. Not exactly sure what tripped the 60' beam.
The car felt soft down low to me on the 1st run, so I decided to bring the nitrous in a little quicker for the 2nd run. Instead of a .4 sec delay and a 1.4 sec ramp, I shortened it to a .2 sec delay and 1.1 sec ramp. This resulted in a big wheelstand. It came down nice and smooth after I pedaled it and it ran 8.94 @ 155.5 mph w/ a 1.45 sixty foot on the back tires.
So for the 3rd pass I lengthened the ramp back out to 1.45 sec, same .2 sec delay. This resulted in another big wheelstand, but got the oil pan on the way back down. No other damage thankfully.

I have some ideas on what to do next and I may have been thinking about it all wrong. Going to talk it over w/ people who have been faster and know more than me, lol.
I have been quicker in the 1/8 mile than what it ran on the 8.74 pass, so I know it has more in it. Stopping this sled (3800 lbs) from 156 mph was interesting. It did OK, but not something I want to do much of. This car really needs a lot of updates (parachute, brakes, chassis, etc.) if I continue this route, but it isn't as much of a problem running 1/8 mile only.
The front shocks are DA Vikings and are set fully tight on rebound.

Here's a pic from the 2nd run. Somewhere over 100' out. It came down around 200' out or so. There are videos on Facebook that a friend got of all 3 runs, but I don't know how to link them here (I'm at work).
The last pics are the damage from the 3rd run's landing. The 440 source fab'd pan help up pretty well I thought.

image0000.JPGIMG_4986.jpgIMG_4985.jpg

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: New best 1/4 Friday night [Re: an8sec70cuda] #3148788
06/05/23 09:16 AM
06/05/23 09:16 AM
Joined: Jan 2003
Posts: 10,009
MN
J
JERICOGTX Offline
I Live Here
JERICOGTX  Offline
I Live Here
J

Joined: Jan 2003
Posts: 10,009
MN
https://russlerii.com/

Should be your next purchase...


69 GTX 68 Road Runner
Re: New best 1/4 Friday night [Re: an8sec70cuda] #3148801
06/05/23 10:12 AM
06/05/23 10:12 AM
Joined: Feb 2003
Posts: 4,953
Houston, Texas
TheOtherDodge Offline
master
TheOtherDodge  Offline
master

Joined: Feb 2003
Posts: 4,953
Houston, Texas
Originally Posted by an8sec70cuda
Went to Darlington Friday night for test and tune. After having issues at Rockingham last month. I wanted to see if I had a decent setup to keep the front down and go faster.
My first pass off the trailer was an 8.74 @ 156.4 mph w/ a 1.35 sixty foot. A personal best 1/4 mile ET for me! The front only came up about a 8-12" and carried them out nicely. Not exactly sure what tripped the 60' beam.
The car felt soft down low to me on the 1st run, so I decided to bring the nitrous in a little quicker for the 2nd run. Instead of a .4 sec delay and a 1.4 sec ramp, I shortened it to a .2 sec delay and 1.1 sec ramp. This resulted in a big wheelstand. It came down nice and smooth after I pedaled it and it ran 8.94 @ 155.5 mph w/ a 1.45 sixty foot on the back tires.
So for the 3rd pass I lengthened the ramp back out to 1.45 sec, same .2 sec delay. This resulted in another big wheelstand, but got the oil pan on the way back down. No other damage thankfully.

I have some ideas on what to do next and I may have been thinking about it all wrong. Going to talk it over w/ people who have been faster and know more than me, lol.
I have been quicker in the 1/8 mile than what it ran on the 8.74 pass, so I know it has more in it. Stopping this sled (3800 lbs) from 156 mph was interesting. It did OK, but not something I want to do much of. This car really needs a lot of updates (parachute, brakes, chassis, etc.) if I continue this route, but it isn't as much of a problem running 1/8 mile only.
The front shocks are DA Vikings and are set fully tight on rebound.

Here's a pic from the 2nd run. Somewhere over 100' out. It came down around 200' out or so. There are videos on Facebook that a friend got of all 3 runs, but I don't know how to link them here (I'm at work).
The last pics are the damage from the 3rd run's landing. The 440 source fab'd pan help up pretty well I thought.


Nice runs! Are you running biased slicks or radials?

Re: New best 1/4 Friday night [Re: TheOtherDodge] #3148804
06/05/23 10:15 AM
06/05/23 10:15 AM
Joined: Dec 2013
Posts: 4,651
Wichita
G
GY3 Offline
master
GY3  Offline
master
G

Joined: Dec 2013
Posts: 4,651
Wichita
Wow, I remember when this was just a 10 second 'Cuda!


'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: New best 1/4 Friday night [Re: an8sec70cuda] #3148810
06/05/23 10:32 AM
06/05/23 10:32 AM
Joined: Jan 2003
Posts: 2,901
A shed in England
Tig Offline
master
Tig  Offline
master

Joined: Jan 2003
Posts: 2,901
A shed in England
Awesome work up.
Just wondering what rear gear and controller are you using ? I have an old(ish), NOS (Holley) 2 stage controller with a little screen. I haven't used it yet as we were looking to do some upgrades before fitting the N2O (9" and TH400 type box) along with the 655 but it looks like it should do the job. We're hoping to go mid 8's with it all scienced out but who knows grin


'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
Re: New best 1/4 Friday night [Re: Tig] #3148821
06/05/23 11:19 AM
06/05/23 11:19 AM
Joined: Aug 2003
Posts: 4,662
On the parachute mount
N
n20mstr Offline
master
n20mstr  Offline
master
N

Joined: Aug 2003
Posts: 4,662
On the parachute mount
HMMMMM , less first gear in the trans??

move some weight forward?

SOunds great, congrats on a bad a$$ street car up


....BAD A$$ STREET CAR.....
Re: New best 1/4 Friday night [Re: n20mstr] #3148826
06/05/23 11:26 AM
06/05/23 11:26 AM
Joined: Jan 2003
Posts: 4,003
Shelby Twp. Mi
HardcoreB Offline
master
HardcoreB  Offline
master

Joined: Jan 2003
Posts: 4,003
Shelby Twp. Mi
Nice work! Thanks for the update.

Re: New best 1/4 Friday night [Re: HardcoreB] #3148828
06/05/23 11:37 AM
06/05/23 11:37 AM
Joined: Mar 2003
Posts: 2,485
PA
moparacer Offline
top fuel
moparacer  Offline
top fuel

Joined: Mar 2003
Posts: 2,485
PA
As far as stopping the wheelstands my vote is for revalving or replacing the front shocks.

I had my AFCO 3850s revalved a couple years ago after I put mine on the bumper, and made a milodon pan into a low profile just like you did, and I can literally lock the front end down to zero movement.


67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174
Re: New best 1/4 Friday night [Re: moparacer] #3148831
06/05/23 11:53 AM
06/05/23 11:53 AM
Joined: Feb 2004
Posts: 34,828
S.E. South Dakota !
bigdad Offline
Still Posting A Lot
bigdad  Offline
Still Posting A Lot

Joined: Feb 2004
Posts: 34,828
S.E. South Dakota !
nice pass , that is a big wheel stand ..


The lips of fools bring them strife, and their mouths invite a beating.Proverbs 18:6
Re: New best 1/4 Friday night [Re: bigdad] #3148896
06/05/23 02:45 PM
06/05/23 02:45 PM
Joined: Jan 2003
Posts: 13,318
Marion, South Carolina [><]
an8sec70cuda Offline OP
I Live Here
an8sec70cuda  Offline OP
I Live Here

Joined: Jan 2003
Posts: 13,318
Marion, South Carolina [><]
Jerico...yessir, it's on the to do list.

TheOtherDodge...thanks! I'm on 295-65 radials.

GY3...that was an expensive 2 seconds, lol.

Tig...3.54 gear and a Leash progressive.

n20mstr...there are a few things I'm considering changing and trying. I'll get a plan together soon. Have a lot going on this summer, so I'm not in a hurry to get back to the track. Sometime in the fall probably.

HardcoreB... up

moparacer...When I bought these shocks I don't think Viking offered their "crusader" valving for their front shocks. I asked about it. Apparently now they do have stiffer valving for the fronts they sell. I need to give them a call. This last week was the first time getting a good pass w/ the shocks fully tight.

bigdad...thanks. Hopefully it won't happen again, lol.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: New best 1/4 Friday night [Re: an8sec70cuda] #3148924
06/05/23 03:48 PM
06/05/23 03:48 PM
Joined: Oct 2010
Posts: 2,393
Ambridge, Pa.
R
rickraw Offline
top fuel
rickraw  Offline
top fuel
R

Joined: Oct 2010
Posts: 2,393
Ambridge, Pa.
That’s high, time for some wheelie bars.

Re: New best 1/4 Friday night [Re: rickraw] #3148938
06/05/23 04:21 PM
06/05/23 04:21 PM
Joined: Jan 2003
Posts: 19,304
Las Vegas
Al_Alguire Offline
I Live Here
Al_Alguire  Offline
I Live Here

Joined: Jan 2003
Posts: 19,304
Las Vegas
Congrats, you now have a blueprint for what you want the car to do with that PB. Go back and work from there. I sure done appear you need all that pitch rotation to go fast and I think your results show that. MOve some weight, tie doen the front and get better shocks up front, and keep chipping away smile


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: New best 1/4 Friday night [Re: rickraw] #3148940
06/05/23 04:24 PM
06/05/23 04:24 PM
Joined: Jan 2003
Posts: 17,800
S.E. Michigan
ZIPPY Offline
I Live Here
ZIPPY  Offline
I Live Here

Joined: Jan 2003
Posts: 17,800
S.E. Michigan
Those videos sure got my attention...that car is more badass than ever.


Rich H.

Esse Quam Videri




Re: New best 1/4 Friday night [Re: ZIPPY] #3148947
06/05/23 04:57 PM
06/05/23 04:57 PM
Joined: Mar 2005
Posts: 1,402
Chesterfield Twp. Mi.
J
John Burdine Offline
pro stock
John Burdine  Offline
pro stock
J

Joined: Mar 2005
Posts: 1,402
Chesterfield Twp. Mi.
Bad ass brother, 1.35 was surely with the back tires.

Re: New best 1/4 Friday night [Re: John Burdine] #3148983
06/05/23 07:06 PM
06/05/23 07:06 PM
Joined: Jul 2018
Posts: 165
Sticky South
R
Rodenteliminator Offline
member
Rodenteliminator  Offline
member
R

Joined: Jul 2018
Posts: 165
Sticky South
Does that thing ever blow the tires off at the hit ? It looks like it always goes up, I am sure you have checked the weight bias, and as far as wheelie bars my guess is the way it leaves now it would hit the bars hard and unload it. Doug


Sorry honey I spent the rent
Re: New best 1/4 Friday night [Re: an8sec70cuda] #3149007
06/05/23 10:19 PM
06/05/23 10:19 PM
Joined: Mar 2005
Posts: 3,020
NY
B
B1duster Offline
master
B1duster  Offline
master
B

Joined: Mar 2005
Posts: 3,020
NY
My old duster used to do big wheelies, it had a 6” dragster pan with draglink hole and kick out.
I added a small skid plate to the bottom of the K frame that hung just below the pan. It collected
a lot of rubber but never dented the pan. I also added limiters to help keep the nose down.
Went 1.25 60 ft but only 8.94 at 150… You’re making some steam. Nice car !

Re: New best 1/4 Friday night [Re: B1duster] #3149038
06/06/23 04:59 AM
06/06/23 04:59 AM
Joined: Sep 2005
Posts: 620
Deep DEEP SOUTH
LAD 524 Offline
mopar
LAD 524  Offline
mopar

Joined: Sep 2005
Posts: 620
Deep DEEP SOUTH
Chip awesome on the new PB, bummer on the pan. wink

I did'nt realise you went to a 3.54, when did you ditch the 4.10s, when you went on the bottle ?

Just wondering what RPM you're leaving at and what the rear shock setting are?

Gots to find another way to keep your front end down, the nitrous controller/ tune seemed to help but other than that and the shock settings (which I'm sure you've played with) what else can you try changing .....Cal Trac bars for IC changes, wheelie bars ?

Something else?






Last edited by LAD 524; 06/06/23 05:00 AM.
Re: New best 1/4 Friday night [Re: LAD 524] #3149055
06/06/23 08:12 AM
06/06/23 08:12 AM
Joined: Mar 2006
Posts: 9,791
MI, usa
dvw Offline
master
dvw  Offline
master

Joined: Mar 2006
Posts: 9,791
MI, usa
Not many street cars can say they leave like this one. Not many racecars either. Tightening the front shock valving helped me. With factory Afco valving if the front rebound was anywhere but full tight it would 60ft on the rear tires. When it did that it was always a .10 slower in 60ft with the same 330. However mine has a few things going for it. 113"WB. Iron block, so it's 54.5% on the nose. And wheelie bars. With your WB (108"?) the greatest mass (eng/trans) is closer to the rear axle. Even if it is 55% or more on the nose. Swap the battery to the front if it's not already there. That's a big weight shift in itself. Then take most of the travel out of the front first to see what happens. If it stiil wheelies, tighter front shock rebound may not help much.
Doug

Re: New best 1/4 Friday night [Re: dvw] #3149080
06/06/23 09:55 AM
06/06/23 09:55 AM
Joined: Aug 2003
Posts: 4,662
On the parachute mount
N
n20mstr Offline
master
n20mstr  Offline
master
N

Joined: Aug 2003
Posts: 4,662
On the parachute mount
what you have to remember, this is a radial tire car. Radials Dead Hook , that means the car wants to pitch rotate or go forward..... this car seems to want to pitch rotate. It needs more weight on the front and less SLR , thats it. Honestly with a radial tire the travel and tight shock only helps but its not going to 100% fix this wheelie problem

THis car needs , LESS SLR, and more weight on the front. THEN he can really get agressive on the ramp and go LOW 8's or mid to low?5's in the 1/8

Powerglide , or leave in 2nd gear, (2nd gear leave will require a converter change)
Move the battery forward, move the fuel cell up front, sneak the motor forward 3/4 of an inch, lighten the rear of the car, fiberglass trunk lid, fibergalss rear bumper anything to change the weight bias will help

Last edited by n20mstr; 06/06/23 09:59 AM.

....BAD A$$ STREET CAR.....
Re: New best 1/4 Friday night [Re: n20mstr] #3149090
06/06/23 10:37 AM
06/06/23 10:37 AM
Joined: Jan 2003
Posts: 13,318
Marion, South Carolina [><]
an8sec70cuda Offline OP
I Live Here
an8sec70cuda  Offline OP
I Live Here

Joined: Jan 2003
Posts: 13,318
Marion, South Carolina [><]
rickraw...I really don't want to put wheelie bars on it. Some of the classes I run don't allow them.

Al...Yes, I guess I didn't realize just how well the car worked on the first run. All I saw was the slow (according to the numbers on the slip) 60 foot and immediately wanted to improve on that.

Zippy...thankyou!

John Burdine...Thanks! I've been really wanting to see a 1.2x 60 foot. Closest I've been is a 1.300.

Rodenteliminator...It hasn't done that in a while. As long as the track isn't decent, it'll hook. Not much gear, real tight converter, and leaving on motor...it's not making much right at the hit to get things planted. Then roll the power in.

B1duster...a skid plate might prove useful, lol. I'm leery of using limiters up front even though I do have some in the trailer to try. My thinking is if it still wheelies and comes down it'll have that much less cushion and really tear stuff up. But I know it's one of those things I just have to try and see and no one can tell me what's gonna happen.

LAD 524...Yes, I switched to the 3.54s not long after going to nitrous. It was completely unmanageable w/ the 4.10s. It just killed the tires or tried to stand straight up on less nitrous.
Leaving on the transbrake at 3k rpm. Rear shocks are 8 compression, 5 rebound...out of 18. 18 being the stiffest. I admit I haven't changed the rear shock settings after I got my initial tuning done when they were new. All I've changed are the front rebound settings. Gradually getting tighter until now I'm maxed out. I should try tightening the rear rebound, but I don't want to make too many changes at once. Plus I felt the front would offer more benefit from changes.

DVW...I will contact Viking and see if they can revalve my front shocks. Might as well see if that is even an option. I will also probably be moving the battery back up front. Thanks for the oil pan help too. up I should have it back together this weekend.

n20mstr...I agree the SLR is a problem. It's also something I may just have to live with. I'm not changing transmissions. I may end up putting a 2nd gear leave VB in this 727, but a 1.45 gear w/ a nearly 3800 lb car might not work too well. There's also the possibility of changing to a 3.23 rear gear if Dr Diff ever has those available. Yes, I still have a Dana and no, I'm not changing to a 9". I'm not being stubborn or being a "purist". I'm being cheap b/c I simply don't care to spend a ton of money on this car anymore. I'll work w/ what I have within reason. I have more family oriented things I'd rather spend money on.
If I had the forethought way back when, it would already have a glide and a 9" under it.

I've been to the track 5 times in the last 3 years. Last year I only went to the track once and had ignition problems that kept me from making a good pass all day. Not a lot of runs to figure it out even though I've had this setup quite a while.
I'll make some small changes and see what happens. If it doesn't go much faster, so be it.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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